{ "instance": { "nspm-20211231.htm": { "axisCustom": 6, "axisStandard": 41, "contextCount": 815, "dts": { "calculationLink": { "local": [ "nspm-20211231_cal.xml" ] }, "definitionLink": { "local": [ "nspm-20211231_def.xml" ] }, "inline": { "local": [ "nspm-20211231.htm" ] }, "labelLink": { "local": [ "nspm-20211231_lab.xml" ] }, "presentationLink": { "local": [ "nspm-20211231_pre.xml" ] }, "schema": { "local": [ "nspm-20211231.xsd" ], "remote": [ "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd", "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd", "http://www.xbrl.org/2003/xl-2003-12-31.xsd", "http://www.xbrl.org/2003/xlink-2003-12-31.xsd", "http://www.xbrl.org/2005/xbrldt-2005.xsd", "http://www.xbrl.org/2006/ref-2006-02-27.xsd", "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd", "https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd", "https://www.xbrl.org/dtr/type/2020-01-21/types.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-roles-2021-01-31.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-types-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-roles-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-types-2021-01-31.xsd", "https://xbrl.sec.gov/country/2021/country-2021.xsd", "https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd" ] } }, "elementCount": 974, "entityCount": 1, "hidden": { "http://fasb.org/us-gaap/2021-01-31": 40, "http://xbrl.sec.gov/dei/2021q4": 7, "total": 47 }, "keyCustom": 159, "keyStandard": 482, "memberCustom": 100, "memberStandard": 77, "nsprefix": "nspm", "nsuri": "http://www.xcelenergy.com/20211231", "report": { "R1": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "true", "longName": "0001001 - Document - Cover Page", "role": "http://www.xcelenergy.com/role/CoverPage", "shortName": "Cover Page", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R10": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2101101 - Disclosure - Summary of Significant Accounting Policies", "role": "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPolicies", "shortName": "Summary of Significant Accounting Policies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2105102 - Disclosure - Accounting Pronouncements", "role": "http://www.xcelenergy.com/role/AccountingPronouncements", "shortName": "Accounting Pronouncements", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2107103 - Disclosure - Property Plant and Equipment Property Plant and Equipment", "role": "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipment", "shortName": "Property Plant and Equipment Property Plant and Equipment", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2111104 - Disclosure - Regulatory Assets and Liabilities", "role": "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilities", "shortName": "Regulatory Assets and Liabilities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DebtDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2115105 - Disclosure - Borrowings and Other Financing Instruments", "role": "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstruments", "shortName": "Borrowings and Other Financing Instruments", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DebtDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2123106 - Disclosure - Revenues", "role": "http://www.xcelenergy.com/role/Revenues", "shortName": "Revenues", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R16": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2126107 - Disclosure - Income Taxes", "role": "http://www.xcelenergy.com/role/IncomeTaxes", "shortName": "Income Taxes", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2132108 - Disclosure - Fair Value of Financial Assets and Liabilities", "role": "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilities", "shortName": "Fair Value of Financial Assets and Liabilities", "subGroupType": "", "uniqueAnchor": null }, "R18": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2143109 - Disclosure - Benefit Plans and Other Postretirement Benefits", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefits", "shortName": "Benefit Plans and Other Postretirement Benefits", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2153110 - Disclosure - Commitments and Contingencies", "role": "http://www.xcelenergy.com/role/CommitmentsandContingencies", "shortName": "Commitments and Contingencies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "dei:AuditorName", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "false", "longName": "0002009 - Document - Audit Information", "role": "http://www.xcelenergy.com/role/AuditInformation", "shortName": "Audit Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "dei:AuditorName", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R20": { "firstAnchor": { "ancestors": [ "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2169111 - Disclosure - Other Comprehensive Income", "role": "http://www.xcelenergy.com/role/OtherComprehensiveIncome", "shortName": "Other Comprehensive Income", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R21": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SegmentReportingDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2172112 - Disclosure - Segments and Related Information", "role": "http://www.xcelenergy.com/role/SegmentsandRelatedInformation", "shortName": "Segments and Related Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SegmentReportingDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R22": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2175113 - Disclosure - Related Party Transactions", "role": "http://www.xcelenergy.com/role/RelatedPartyTransactions", "shortName": "Related Party Transactions", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": null, "groupType": "disclosure", "isDefault": "false", "longName": "2178114 - Disclosure - Summarized Quarterly Financial Data (Unaudited)", "role": "http://www.xcelenergy.com/role/SummarizedQuarterlyFinancialDataUnaudited", "shortName": "Summarized Quarterly Financial Data (Unaudited)", "subGroupType": "", "uniqueAnchor": null }, "R24": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2181115 - Disclosure - Schedule II, Valuation and Qualifying Accounts", "role": "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccounts", "shortName": "Schedule II, Valuation and Qualifying Accounts", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "div", "us-gaap:SignificantAccountingPoliciesTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BusinessDescriptionAndBasisOfPresentationTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)", "role": "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies", "shortName": "Summary of Significant Accounting Policies (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "div", "us-gaap:SignificantAccountingPoliciesTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BusinessDescriptionAndBasisOfPresentationTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfUtilityInventoryTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2303301 - Disclosure - Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)", "role": "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesSummaryofSignificantAccountingPoliciesTables", "shortName": "Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfUtilityInventoryTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R27": { "firstAnchor": { "ancestors": [ "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2308302 - Disclosure - Property Plant and Equipment (Tables)", "role": "http://www.xcelenergy.com/role/PropertyPlantandEquipmentTables", "shortName": "Property Plant and Equipment (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRegulatoryAssetsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2312303 - Disclosure - Regulatory Assets and Liabilities (Tables)", "role": "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesTables", "shortName": "Regulatory Assets and Liabilities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRegulatoryAssetsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "us-gaap:DebtDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "nspm:MoneyPoolTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2316304 - Disclosure - Borrowings and Other Financing Instruments (Tables)", "role": "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstrumentsTables", "shortName": "Borrowings and Other Financing Instruments (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:DebtDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "nspm:MoneyPoolTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R3": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:RegulatedOperatingRevenueElectricNonaffiliate", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1001002 - Statement - CONSOLIDATED STATEMENTS OF INCOME", "role": "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "shortName": "CONSOLIDATED STATEMENTS OF INCOME", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:RegulatedOperatingRevenueElectricNonaffiliate", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R30": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:RevenueFromContractWithCustomerTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisaggregationOfRevenueTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2324305 - Disclosure - Revenues Revenues (Tables)", "role": "http://www.xcelenergy.com/role/RevenuesRevenuesTables", "shortName": "Revenues Revenues (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:RevenueFromContractWithCustomerTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisaggregationOfRevenueTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "nspm:SummaryofStatuteofLimitationsApplicabletoOpenTaxYearsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2327306 - Disclosure - Income Taxes (Tables)", "role": "http://www.xcelenergy.com/role/IncomeTaxesTables", "shortName": "Income Taxes (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "nspm:SummaryofStatuteofLimitationsApplicabletoOpenTaxYearsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2333307 - Disclosure - Fair Value of Financial Assets and Liabilities (Tables)", "role": "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables", "shortName": "Fair Value of Financial Assets and Liabilities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "lang": "en-US", "name": "nspm:AvailableForSaleSecuritiesAmortizedCostAndFairValueMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfNetPeriodicBenefitCostNotYetRecognizedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2344308 - Disclosure - Benefit Plans and Other Postretirement Benefits (Tables)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables", "shortName": "Benefit Plans and Other Postretirement Benefits (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfNetPeriodicBenefitCostNotYetRecognizedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAssetRetirementObligationsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2354309 - Disclosure - Commitments and Contingencies (Tables)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables", "shortName": "Commitments and Contingencies (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAssetRetirementObligationsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2370310 - Disclosure - Other Comprehensive Income (Tables)", "role": "http://www.xcelenergy.com/role/OtherComprehensiveIncomeTables", "shortName": "Other Comprehensive Income (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2373311 - Disclosure - Segments and Related Information (Tables)", "role": "http://www.xcelenergy.com/role/SegmentsandRelatedInformationTables", "shortName": "Segments and Related Information (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2376312 - Disclosure - Related Party Transactions (Tables)", "role": "http://www.xcelenergy.com/role/RelatedPartyTransactionsTables", "shortName": "Related Party Transactions (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R38": { "firstAnchor": null, "groupType": "disclosure", "isDefault": "false", "longName": "2379313 - Disclosure - Summarized Quarterly Financial Data (Unaudited) (Tables)", "role": "http://www.xcelenergy.com/role/SummarizedQuarterlyFinancialDataUnauditedTables", "shortName": "Summarized Quarterly Financial Data (Unaudited) (Tables)", "subGroupType": "tables", "uniqueAnchor": null }, "R39": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "3", "first": true, "lang": "en-US", "name": "nspm:DepreciationExpenseExpressedAsPercentageOfAverageDepreciableProperty", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2404401 - Disclosure - Summary of Significant Accounting Policies (Details)", "role": "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails", "shortName": "Summary of Significant Accounting Policies (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "3", "first": true, "lang": "en-US", "name": "nspm:DepreciationExpenseExpressedAsPercentageOfAverageDepreciableProperty", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DebtRelatedCommitmentFeesAndDebtIssuanceCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1002003 - Statement - CONSOLIDATED STATEMENTS OF INCOME (Parenthetical)", "role": "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOMEParenthetical", "shortName": "CONSOLIDATED STATEMENTS OF INCOME (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DebtRelatedCommitmentFeesAndDebtIssuanceCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R40": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i6a0922aa1ebc4de692320e1db878fc52_D20200101-20201231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:CreditLossesTopic326ASCTopic326", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406402 - Disclosure - Accounting Pronouncements - Recently Adopted (Details)", "role": "http://www.xcelenergy.com/role/AccountingPronouncementsRecentlyAdoptedDetails", "shortName": "Accounting Pronouncements - Recently Adopted (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i5081841669f34f70bac5f611381ae60f_D20200101-20200101", "decimals": "-6", "lang": "en-US", "name": "nspm:CreditLossesTopic326ASCTopic326", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R41": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock", "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409403 - Disclosure - Property Plant and Equipment (Details)", "role": "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails", "shortName": "Property Plant and Equipment (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock", "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R42": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfJointlyOwnedUtilityPlantsTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2410404 - Disclosure - Property Plant and Equipment Property Plant and Equipment Joint Ownership (Details)", "role": "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails", "shortName": "Property Plant and Equipment Property Plant and Equipment Joint Ownership (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfJointlyOwnedUtilityPlantsTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:RegulatoryAssetsCurrent", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2413405 - Disclosure - Regulatory Assets and Liabilities, Regulatory Assets (Details)", "role": "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails", "shortName": "Regulatory Assets and Liabilities, Regulatory Assets (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R44": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:RegulatoryLiabilityCurrent", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414406 - Disclosure - Regulatory Assets and Liabilities, Regulatory Liabilities (Details)", "role": "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails", "shortName": "Regulatory Assets and Liabilities, Regulatory Liabilities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfRegulatoryLiabilitiesTextBlock", "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i8e7458b2f107429fb8b0abf880d2931d_I20211231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:RegulatoryLiabilityCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R45": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:ShortTermBorrowings", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2417407 - Disclosure - Short-Term Debt (Details)", "role": "http://www.xcelenergy.com/role/ShortTermDebtDetails", "shortName": "Short-Term Debt (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "nspm:MoneyPoolTableTextBlock", "us-gaap:DebtDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i7c3830e0895b49e19aa6ff127872d92b_I20201231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R46": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:ShortTermBorrowings", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418408 - Disclosure - Letters of Credit (Details)", "role": "http://www.xcelenergy.com/role/LettersofCreditDetails", "shortName": "Letters of Credit (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R47": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:ShortTermBorrowings", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2419409 - Disclosure - Credit Facilities (Details)", "role": "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "shortName": "Credit Facilities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "nspm:ScheduleOfDebtToTotalCapitalizationRatioTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "id3a908e8cda94c5b91bd27c0a252e2ca_I20211231", "decimals": "2", "lang": "en-US", "name": "nspm:LineOfCreditFacilityDebtToTotalCapitalizationRatio", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R48": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfDebtInstrumentsTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2420410 - Disclosure - Long-Term Debt (Details)", "role": "http://www.xcelenergy.com/role/LongTermDebtDetails", "shortName": "Long-Term Debt (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfDebtInstrumentsTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R49": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DeferredFinanceCostsNoncurrentNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2421411 - Disclosure - Deferred Financing Costs (Details)", "role": "http://www.xcelenergy.com/role/DeferredFinancingCostsDetails", "shortName": "Deferred Financing Costs (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DeferredFinanceCostsNoncurrentNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R5": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1003004 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME", "role": "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME", "shortName": "CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R50": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfDividendPaymentRestrictionsTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:EquityToTotalCapitalizationRatioLowEndOfRange", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422412 - Disclosure - Dividend and Other Capital-Related Restrictions (Details)", "role": "http://www.xcelenergy.com/role/DividendandOtherCapitalRelatedRestrictionsDetails", "shortName": "Dividend and Other Capital-Related Restrictions (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfDividendPaymentRestrictionsTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:EquityToTotalCapitalizationRatioLowEndOfRange", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R51": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "us-gaap:RevenueFromContractWithCustomerTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "if54c272d91fd469f8caeddeb271ebab3_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2425413 - Disclosure - Revenues Revenues (Details)", "role": "http://www.xcelenergy.com/role/RevenuesRevenuesDetails", "shortName": "Revenues Revenues (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "us-gaap:RevenueFromContractWithCustomerTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "if54c272d91fd469f8caeddeb271ebab3_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R52": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2428414 - Disclosure - Federal Loss Carryback", "role": "http://www.xcelenergy.com/role/FederalLossCarryback", "shortName": "Federal Loss Carryback", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R53": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:PotentialFederalTaxAdjustments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2429415 - Disclosure - State Audits", "role": "http://www.xcelenergy.com/role/StateAudits", "shortName": "State Audits", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:PotentialFederalTaxAdjustments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R54": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:SummaryOfIncomeTaxContingenciesTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2430416 - Disclosure - Unrecognized Tax Benefits", "role": "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits", "shortName": "Unrecognized Tax Benefits", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:SummaryOfIncomeTaxContingenciesTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R55": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:FederalNOLCarryforward", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2431417 - Disclosure - Other Income Tax Matters", "role": "http://www.xcelenergy.com/role/OtherIncomeTaxMatters", "shortName": "Other Income Tax Matters", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9ec2d3bc4f1c45fb87a97f94fc2cae61_I20201231", "decimals": "-6", "lang": "en-US", "name": "nspm:FederalNOLCarryforward", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R56": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:UnrealizedGainOnSecurities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2434418 - Disclosure - Nuclear Decommissioning Fund (Details)", "role": "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "shortName": "Nuclear Decommissioning Fund (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:UnrealizedGainOnSecurities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R57": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "nspm:RabbiTrustSecuritiesAmortizedCostandFairValueMeasuredonRecurrringBasisTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ic1779846d75d4a3caa09132269a397a1_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2435419 - Disclosure - Rabbi Trust (Details)", "role": "http://www.xcelenergy.com/role/RabbiTrustDetails", "shortName": "Rabbi Trust (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "nspm:RabbiTrustSecuritiesAmortizedCostandFairValueMeasuredonRecurrringBasisTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ic1779846d75d4a3caa09132269a397a1_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R58": { "firstAnchor": { "ancestors": [ "span", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "if027999cc4484398aa8b556217779085_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2436420 - Disclosure - Interest Rate Derivatives (Details)", "role": "http://www.xcelenergy.com/role/InterestRateDerivativesDetails", "shortName": "Interest Rate Derivatives (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "if027999cc4484398aa8b556217779085_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R59": { "firstAnchor": { "ancestors": [ "span", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2437421 - Disclosure - Commodity Derivatives (Details)", "role": "http://www.xcelenergy.com/role/CommodityDerivativesDetails", "shortName": "Commodity Derivatives (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R6": { "firstAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "us-gaap:ComprehensiveIncomeNoteTextBlock", "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1004005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)", "role": "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEParenthetical", "shortName": "CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R60": { "firstAnchor": { "ancestors": [ "span", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9030dd5e9017405ba5c54dcd627493e9_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:Numberofmostsignificantcounterpartiesforwholesaletradingandnontradingcommodityactivitieswithcreditexposure", "reportCount": 1, "unique": true, "unitRef": "counterparty", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2438422 - Disclosure - Consideration of Credit Risk and Concentrations (Details)", "role": "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails", "shortName": "Consideration of Credit Risk and Concentrations (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9030dd5e9017405ba5c54dcd627493e9_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:Numberofmostsignificantcounterpartiesforwholesaletradingandnontradingcommodityactivitieswithcreditexposure", "reportCount": 1, "unique": true, "unitRef": "counterparty", "xsiNil": "false" } }, "R61": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9ec2d3bc4f1c45fb87a97f94fc2cae61_I20201231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2439423 - Disclosure - Qualifying Cash Flow Hedges (Details)", "role": "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails", "shortName": "Qualifying Cash Flow Hedges (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ibb3964da329d4dd19758519a342333f7_I20181231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R62": { "firstAnchor": { "ancestors": [ "span", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:DerivativeGrossLiabilityPositionAggregateFairValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2440424 - Disclosure - Credit Related Contingent Features (Details)", "role": "http://www.xcelenergy.com/role/CreditRelatedContingentFeaturesDetails", "shortName": "Credit Related Contingent Features (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:DerivativeGrossLiabilityPositionAggregateFairValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R63": { "firstAnchor": { "ancestors": [ "link:footnote", "span", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DerivativeAssetCollateralObligationToReturnCashOffset", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2441425 - Disclosure - Recurring Fair Value Measurements (Details)", "role": "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails", "shortName": "Recurring Fair Value Measurements (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "link:footnote", "span", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DerivativeAssetCollateralObligationToReturnCashOffset", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R64": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:FairValueByBalanceSheetGroupingTextBlock", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DebtInstrumentCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2442426 - Disclosure - Fair Value of Long-Term Debt (Details)", "role": "http://www.xcelenergy.com/role/FairValueofLongTermDebtDetails", "shortName": "Fair Value of Long-Term Debt (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:FairValueByBalanceSheetGroupingTextBlock", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DebtInstrumentCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R65": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:AnnualInterestCreditingRates", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2445427 - Disclosure - Benefit Plans and Other Postretirement Benefits Benefit Plans and Other Postretirement Benefits, Fair Value Hierarchy (Details)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "shortName": "Benefit Plans and Other Postretirement Benefits Benefit Plans and Other Postretirement Benefits, Fair Value Hierarchy (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:AnnualInterestCreditingRates", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R66": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i2d6941cdb39742548052f34d4b60df45_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DefinedBenefitPlanBenefitObligation", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2446428 - Disclosure - Benefit Plans and Other Postretirement Benefits, Pension Benefits (Details)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "shortName": "Benefit Plans and Other Postretirement Benefits, Pension Benefits (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAllocationOfPlanAssetsTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i4d831eff7fd5491ca13d4b24dfc2c2e9_I20211231", "decimals": "2", "lang": "en-US", "name": "us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R67": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i4d831eff7fd5491ca13d4b24dfc2c2e9_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DefinedBenefitPlanFairValueOfPlanAssets", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2447429 - Disclosure - Benefit Plans and Other Postretirement Benefits, Fair Value of Pension Plan Assets (Details)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "shortName": "Benefit Plans and Other Postretirement Benefits, Fair Value of Pension Plan Assets (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i4d831eff7fd5491ca13d4b24dfc2c2e9_I20211231", "decimals": "-6", "lang": "en-US", "name": "nspm:DefinedBenefitPlanAlternativeInvestmentsFairValueOfPlanAssets", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R68": { "firstAnchor": { "ancestors": [ "span", "div", "div", "div", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:DefinedBenefitPlanNumberOfPensionPlansToWhichContributionsWereMade", "reportCount": 1, "unique": true, "unitRef": "plan", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2448430 - Disclosure - Benefit Plans and Other Postretirement Benefits, Pension Plan Benefit Obligations, Cash Flows and Benefit Costs (Details)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "shortName": "Benefit Plans and Other Postretirement Benefits, Pension Plan Benefit Obligations, Cash Flows and Benefit Costs (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "div", "div", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:DefinedBenefitPlanNumberOfPensionPlansToWhichContributionsWereMade", "reportCount": 1, "unique": true, "unitRef": "plan", "xsiNil": "false" } }, "R69": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock", "div", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i4219c41452104c0b8d98a33b10e9555e_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DefinedBenefitPlanBenefitObligation", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2449431 - Disclosure - Benefit Plans and Other Postretirement Benefits, Postretirement Health Care Benefits (Details)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "shortName": "Benefit Plans and Other Postretirement Benefits, Postretirement Health Care Benefits (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAllocationOfPlanAssetsTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i4219c41452104c0b8d98a33b10e9555e_I20211231", "decimals": "2", "lang": "en-US", "name": "us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R7": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1005006 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS", "role": "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS", "shortName": "CONSOLIDATED STATEMENTS OF CASH FLOWS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:DepreciationAmortizationAndAccretionNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R70": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock", "div", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i4219c41452104c0b8d98a33b10e9555e_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DefinedBenefitPlanFairValueOfPlanAssets", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2450432 - Disclosure - Benefit Plans and Other Postretirement Benefits, Fair Value of Postretirement Benefit Plan Assets (Details)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "shortName": "Benefit Plans and Other Postretirement Benefits, Fair Value of Postretirement Benefit Plan Assets (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i4219c41452104c0b8d98a33b10e9555e_I20211231", "decimals": "-6", "lang": "en-US", "name": "nspm:DefinedBenefitPlanAlternativeInvestmentsFairValueOfPlanAssets", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R71": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2451433 - Disclosure - Benefit Plans and Other Postretirement Benefits, Postretirement Benefit Plan Benefit Obligations, Cash Flows and Benefit Costs (Details)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "shortName": "Benefit Plans and Other Postretirement Benefits, Postretirement Benefit Plan Benefit Obligations, Cash Flows and Benefit Costs (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "INF", "lang": "en-US", "name": "nspm:PlanAmendments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R72": { "firstAnchor": { "ancestors": [ "us-gaap:DefinedContributionPlanAdministrativeExpenses", "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DefinedContributionPlanAdministrativeExpenses", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2452434 - Disclosure - Benefit Plans and Other Postretirement Benefits, Projected Benefit Payments (Details)", "role": "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails", "shortName": "Benefit Plans and Other Postretirement Benefits, Projected Benefit Payments (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "us-gaap:DefinedContributionPlanAdministrativeExpenses", "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:DefinedContributionPlanAdministrativeExpenses", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R73": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i2af8c7c0f5ba44f5b3aa4ae182876c49_D20210101-20210131", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:Customerrefundofpreviouslyrecoveredpurchasedpowercosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2455435 - Disclosure - Commitments and Contingencies Sherco (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails", "shortName": "Commitments and Contingencies Sherco (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i2af8c7c0f5ba44f5b3aa4ae182876c49_D20210101-20210131", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:Customerrefundofpreviouslyrecoveredpurchasedpowercosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R74": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:GainLossRelatedToLitigationSettlement", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2456436 - Disclosure - Commitments and Contingencies Westmoreland Arbitration (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesWestmorelandArbitrationDetails", "shortName": "Commitments and Contingencies Westmoreland Arbitration (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R75": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i5933f75df12c4b309b1e3b98f5baba42_D20150201-20150228", "decimals": "4", "first": true, "lang": "en-US", "name": "nspm:PublicUtilitiesBaseReturnOnEquityChargedToCustomersThroughTransmissionFormulaRates", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2457437 - Disclosure - Commitments and Contingencies MISO ROE Complaints (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "shortName": "Commitments and Contingencies MISO ROE Complaints (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i5933f75df12c4b309b1e3b98f5baba42_D20150201-20150228", "decimals": "4", "first": true, "lang": "en-US", "name": "nspm:PublicUtilitiesBaseReturnOnEquityChargedToCustomersThroughTransmissionFormulaRates", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R76": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ic7036592e9624117b269cebfbe661fe3_I20211231", "decimals": "0", "first": true, "lang": "en-US", "name": "nspm:NumberofidentifiedMGPlandfillordisposalsitesundercurrentinvestigationandorremediation", "reportCount": 1, "unique": true, "unitRef": "site", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2458438 - Disclosure - Commitments and Contingencies MGP Sites (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesMGPSitesDetails", "shortName": "Commitments and Contingencies MGP Sites (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ic7036592e9624117b269cebfbe661fe3_I20211231", "decimals": "0", "first": true, "lang": "en-US", "name": "nspm:NumberofidentifiedMGPlandfillordisposalsitesundercurrentinvestigationandorremediation", "reportCount": 1, "unique": true, "unitRef": "site", "xsiNil": "false" } }, "R77": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia085f1d5329549948cd12b4cd8b95520_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:Numberofregulatedashunitsthatwillstillbeinoperationbytheendof2019", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2459439 - Disclosure - Commitments and Contingencies Environmental Requirements - Water and Waste (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails", "shortName": "Commitments and Contingencies Environmental Requirements - Water and Waste (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia085f1d5329549948cd12b4cd8b95520_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:Numberofregulatedashunitsthatwillstillbeinoperationbytheendof2019", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R78": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAssetRetirementObligationsTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9ec2d3bc4f1c45fb87a97f94fc2cae61_I20201231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:AssetRetirementObligation", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2460440 - Disclosure - Commitment and Contingencies AROs (Details)", "role": "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "shortName": "Commitment and Contingencies AROs (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAssetRetirementObligationsTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:AssetRetirementObligationLiabilitiesIncurred", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R79": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:IndeterminateCostsIncurredAssetRetirementObligationDueToAsbestos", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2461441 - Disclosure - Indeterminate AROs (Details)", "role": "http://www.xcelenergy.com/role/IndeterminateAROsDetails", "shortName": "Indeterminate AROs (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:IndeterminateCostsIncurredAssetRetirementObligationDueToAsbestos", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1006007 - Statement - CONSOLIDATED BALANCE SHEETS", "role": "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "shortName": "CONSOLIDATED BALANCE SHEETS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R80": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i6d831ba1cf0e4c4383adf3dfb5527b30_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:NuclearInsuranceCoverageSecuredForPublicLiabilityExposure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2462442 - Disclosure - Commitments and Contingencies, Nuclear Insurance (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails", "shortName": "Commitments and Contingencies, Nuclear Insurance (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i6d831ba1cf0e4c4383adf3dfb5527b30_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "nspm:NuclearInsuranceCoverageSecuredForPublicLiabilityExposure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R81": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i0372f017b86b43da8835e6a8f62b236e_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:NumberOfAuthorizedCanistersFilledAndPlacedInDryCaskNuclearStorageFacility", "reportCount": 1, "unique": true, "unitRef": "canister", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2463443 - Disclosure - Commitments and Contingencies Nuclear Fuel Disposal (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails", "shortName": "Commitments and Contingencies Nuclear Fuel Disposal (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i0372f017b86b43da8835e6a8f62b236e_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "nspm:NumberOfAuthorizedCanistersFilledAndPlacedInDryCaskNuclearStorageFacility", "reportCount": 1, "unique": true, "unitRef": "canister", "xsiNil": "false" } }, "R82": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "2", "first": true, "lang": "en-US", "name": "nspm:PercentageOfTotalObligationForDecommissioningExpectedToBeFundedByExternalFunds", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2464444 - Disclosure - Commitments and Contingencies Regulatory Plant Decommissioning Recovery (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "shortName": "Commitments and Contingencies Regulatory Plant Decommissioning Recovery (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": "2", "first": true, "lang": "en-US", "name": "nspm:PercentageOfTotalObligationForDecommissioningExpectedToBeFundedByExternalFunds", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R83": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeaseTermOfContract", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2465445 - Disclosure - Commitments and Contingencies, Leases (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails", "shortName": "Commitments and Contingencies, Leases (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ia96924372dad4e67ac823e75ce8de060_I20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeaseTermOfContract", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R84": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ie62dffc312964a02b1392dc2d25c3458_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:UtilitiesOperatingExpensePurchasedPowerUnderLongTermContracts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2466446 - Disclosure - Commitments and Contingencies, Purchased Power Agreements (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails", "shortName": "Commitments and Contingencies, Purchased Power Agreements (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ie62dffc312964a02b1392dc2d25c3458_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:UtilitiesOperatingExpensePurchasedPowerUnderLongTermContracts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R85": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ie0edca2ba54d46a6afa86427118f91b0_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2467447 - Disclosure - Commitments and Contingencies, Fuel Contracts (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "shortName": "Commitments and Contingencies, Fuel Contracts (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ie0edca2ba54d46a6afa86427118f91b0_I20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R86": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i0c8f184a762d4457ba0da5666be215e3_I20211231", "decimals": "0", "first": true, "lang": "en-US", "name": "nspm:GeneratingCapacityUnderLongTermPurchasedPowerAgreements", "reportCount": 1, "unique": true, "unitRef": "mw", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2468448 - Disclosure - Commitments and Contingencies, Variable Interest Entities (Details)", "role": "http://www.xcelenergy.com/role/CommitmentsandContingenciesVariableInterestEntitiesDetails", "shortName": "Commitments and Contingencies, Variable Interest Entities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i0c8f184a762d4457ba0da5666be215e3_I20211231", "decimals": "0", "first": true, "lang": "en-US", "name": "nspm:GeneratingCapacityUnderLongTermPurchasedPowerAgreements", "reportCount": 1, "unique": true, "unitRef": "mw", "xsiNil": "false" } }, "R87": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9ec2d3bc4f1c45fb87a97f94fc2cae61_I20201231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquity", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2471449 - Disclosure - Other Comprehensive Income (Details)", "role": "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails", "shortName": "Other Comprehensive Income (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ComprehensiveIncomeNoteTextBlock", "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i36d19bcdbd8441d99000b5c874955383_D20210101-20211231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:OtherComprehensiveIncomeLossNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R88": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:RegulatedOperatingRevenueGas", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2474450 - Disclosure - Segments and Related Information (Details)", "role": "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails", "shortName": "Segments and Related Information (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "link:footnote", "span", "div", "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "lang": "en-US", "name": "nspm:RelatedPartyTransactionElectricDomesticRegulatedRevenue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R89": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:InterestExpenseRelatedParty", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2477451 - Disclosure - Related Party Transactions (Details)", "role": "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails", "shortName": "Related Party Transactions (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:InterestExpenseRelatedParty", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i6f93a238f46446dbba3fe1e5a5eb8b67_I20181231", "decimals": "0", "first": true, "lang": "en-US", "name": "us-gaap:CommonStockSharesOutstanding", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1007008 - Statement - CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY", "role": "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY", "shortName": "CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i6f93a238f46446dbba3fe1e5a5eb8b67_I20181231", "decimals": "0", "first": true, "lang": "en-US", "name": "us-gaap:CommonStockSharesOutstanding", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R90": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i9b660e3b7f764831b1c5ab52ca854486_D20210101-20211231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:RegulatedAndUnregulatedOperatingRevenue", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2480452 - Disclosure - Summarized Quarterly Financial Data (Unaudited) (Details)", "role": "http://www.xcelenergy.com/role/SummarizedQuarterlyFinancialDataUnauditedDetails", "shortName": "Summarized Quarterly Financial Data (Unaudited) (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R91": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "ic71ae723985147ceb26c70de498ad519_I20201231", "decimals": "-6", "first": true, "lang": "en-US", "name": "us-gaap:ValuationAllowancesAndReservesBalance", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2482453 - Disclosure - Schedule II, Valuation and Qualifying Accounts (Details)", "role": "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails", "shortName": "Schedule II, Valuation and Qualifying Accounts (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock", "div", "div", "body", "html" ], "baseRef": "nspm-20211231.htm", "contextRef": "i20c1fd24a4a54078a16b75e203a733dc_I20181231", "decimals": "-6", "lang": "en-US", "name": "us-gaap:ValuationAllowancesAndReservesBalance", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } } }, "segmentCount": 186, "tag": { "dei_AmendmentFlag": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.", "label": "Amendment Flag", "terseLabel": "Amendment Flag" } } }, "localname": "AmendmentFlag", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_AuditorFirmId": { "auth_ref": [ "r885", "r886", "r887" ], "lang": { "en-us": { "role": { "documentation": "PCAOB issued Audit Firm Identifier", "label": "Auditor Firm ID", "terseLabel": "Auditor Firm ID" } } }, "localname": "AuditorFirmId", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/AuditInformation" ], "xbrltype": "nonemptySequenceNumberItemType" }, "dei_AuditorLocation": { "auth_ref": [ "r885", "r886", "r887" ], "lang": { "en-us": { "role": { "label": "Auditor Location", "terseLabel": "Auditor Location" } } }, "localname": "AuditorLocation", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/AuditInformation" ], "xbrltype": "internationalNameItemType" }, "dei_AuditorName": { "auth_ref": [ "r885", "r886", "r887" ], "lang": { "en-us": { "role": { "label": "Auditor Name", "terseLabel": "Auditor Name" } } }, "localname": "AuditorName", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/AuditInformation" ], "xbrltype": "internationalNameItemType" }, "dei_CityAreaCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Area code of city", "label": "City Area Code", "terseLabel": "City Area Code" } } }, "localname": "CityAreaCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_CoverAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Cover page.", "label": "Cover [Abstract]", "terseLabel": "Cover [Abstract]" } } }, "localname": "CoverAbstract", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "xbrltype": "stringItemType" }, "dei_CurrentFiscalYearEndDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "End date of current fiscal year in the format --MM-DD.", "label": "Current Fiscal Year End Date", "terseLabel": "Current Fiscal Year End Date" } } }, "localname": "CurrentFiscalYearEndDate", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "gMonthDayItemType" }, "dei_DocumentAnnualReport": { "auth_ref": [ "r885", "r886", "r887" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true only for a form used as an annual report.", "label": "Document Annual Report", "terseLabel": "Document Annual Report" } } }, "localname": "DocumentAnnualReport", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_DocumentFiscalPeriodFocus": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.", "label": "Document Fiscal Period Focus", "terseLabel": "Document Fiscal Period Focus" } } }, "localname": "DocumentFiscalPeriodFocus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "fiscalPeriodItemType" }, "dei_DocumentFiscalYearFocus": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.", "label": "Document Fiscal Year Focus", "terseLabel": "Document Fiscal Year Focus" } } }, "localname": "DocumentFiscalYearFocus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "gYearItemType" }, "dei_DocumentPeriodEndDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.", "label": "Document Period End Date", "terseLabel": "Document Period End Date" } } }, "localname": "DocumentPeriodEndDate", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "dateItemType" }, "dei_DocumentTransitionReport": { "auth_ref": [ "r888" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true only for a form used as a transition report.", "label": "Document Transition Report", "terseLabel": "Document Transition Report" } } }, "localname": "DocumentTransitionReport", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_DocumentType": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.", "label": "Document Type", "terseLabel": "Document Type" } } }, "localname": "DocumentType", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "submissionTypeItemType" }, "dei_EntityAddressAddressLine1": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Address Line 1 such as Attn, Building Name, Street Name", "label": "Entity Address, Address Line One", "terseLabel": "Entity Address, Address Line One" } } }, "localname": "EntityAddressAddressLine1", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressCityOrTown": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Name of the City or Town", "label": "Entity Address, City or Town", "terseLabel": "Entity Address, City or Town" } } }, "localname": "EntityAddressCityOrTown", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressPostalZipCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Code for the postal or zip code", "label": "Entity Address, Postal Zip Code", "terseLabel": "Entity Address, Postal Zip Code" } } }, "localname": "EntityAddressPostalZipCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressStateOrProvince": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Name of the state or province.", "label": "Entity Address, State or Province", "terseLabel": "Entity Address, State or Province" } } }, "localname": "EntityAddressStateOrProvince", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "stateOrProvinceItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r884" ], "lang": { "en-us": { "role": { "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.", "label": "Entity Central Index Key", "terseLabel": "Entity Central Index Key" } } }, "localname": "EntityCentralIndexKey", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "centralIndexKeyItemType" }, "dei_EntityCommonStockSharesOutstanding": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.", "label": "Entity Common Stock, Shares Outstanding", "terseLabel": "Entity Common Stock, Shares Outstanding" } } }, "localname": "EntityCommonStockSharesOutstanding", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "sharesItemType" }, "dei_EntityCurrentReportingStatus": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Current Reporting Status", "terseLabel": "Entity Current Reporting Status" } } }, "localname": "EntityCurrentReportingStatus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "yesNoItemType" }, "dei_EntityDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains.", "label": "Entity [Domain]", "terseLabel": "Entity [Domain]" } } }, "localname": "EntityDomain", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "domainItemType" }, "dei_EntityEmergingGrowthCompany": { "auth_ref": [ "r884" ], "lang": { "en-us": { "role": { "documentation": "Indicate if registrant meets the emerging growth company criteria.", "label": "Entity Emerging Growth Company", "terseLabel": "Entity Emerging Growth Company" } } }, "localname": "EntityEmergingGrowthCompany", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_EntityFileNumber": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.", "label": "Entity File Number", "terseLabel": "Entity File Number" } } }, "localname": "EntityFileNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "fileNumberItemType" }, "dei_EntityFilerCategory": { "auth_ref": [ "r884" ], "lang": { "en-us": { "role": { "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Filer Category", "terseLabel": "Entity Filer Category" } } }, "localname": "EntityFilerCategory", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "filerCategoryItemType" }, "dei_EntityIncorporationStateCountryCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Two-character EDGAR code representing the state or country of incorporation.", "label": "Entity Incorporation, State or Country Code", "terseLabel": "Entity Incorporation, State or Country Code" } } }, "localname": "EntityIncorporationStateCountryCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "edgarStateCountryItemType" }, "dei_EntityInteractiveDataCurrent": { "auth_ref": [ "r896" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).", "label": "Entity Interactive Data Current", "terseLabel": "Entity Interactive Data Current" } } }, "localname": "EntityInteractiveDataCurrent", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "yesNoItemType" }, "dei_EntityPublicFloat": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.", "label": "Entity Public Float", "terseLabel": "Entity Public Float" } } }, "localname": "EntityPublicFloat", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "monetaryItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r884" ], "lang": { "en-us": { "role": { "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.", "label": "Entity Registrant Name", "terseLabel": "Entity Registrant Name" } } }, "localname": "EntityRegistrantName", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityShellCompany": { "auth_ref": [ "r884" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.", "label": "Entity Shell Company", "terseLabel": "Entity Shell Company" } } }, "localname": "EntityShellCompany", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_EntitySmallBusiness": { "auth_ref": [ "r884" ], "lang": { "en-us": { "role": { "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).", "label": "Entity Small Business", "terseLabel": "Entity Small Business" } } }, "localname": "EntitySmallBusiness", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_EntityTaxIdentificationNumber": { "auth_ref": [ "r884" ], "lang": { "en-us": { "role": { "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.", "label": "Entity Tax Identification Number", "terseLabel": "Entity Tax Identification Number" } } }, "localname": "EntityTaxIdentificationNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "employerIdItemType" }, "dei_EntityVoluntaryFilers": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.", "label": "Entity Voluntary Filers", "terseLabel": "Entity Voluntary Filers" } } }, "localname": "EntityVoluntaryFilers", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "yesNoItemType" }, "dei_EntityWellKnownSeasonedIssuer": { "auth_ref": [ "r911" ], "lang": { "en-us": { "role": { "documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.", "label": "Entity Well-known Seasoned Issuer", "terseLabel": "Entity Well-known Seasoned Issuer" } } }, "localname": "EntityWellKnownSeasonedIssuer", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "yesNoItemType" }, "dei_IcfrAuditorAttestationFlag": { "auth_ref": [ "r885", "r886", "r887" ], "lang": { "en-us": { "role": { "label": "ICFR Auditor Attestation Flag", "terseLabel": "ICFR Auditor Attestation Flag" } } }, "localname": "IcfrAuditorAttestationFlag", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_LegalEntityAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The set of legal entities associated with a report.", "label": "Legal Entity [Axis]", "terseLabel": "Legal Entity [Axis]" } } }, "localname": "LegalEntityAxis", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "stringItemType" }, "dei_LocalPhoneNumber": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Local phone number for entity.", "label": "Local Phone Number", "terseLabel": "Local Phone Number" } } }, "localname": "LocalPhoneNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://www.xcelenergy.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "nspm_ARODifferencesBetween2020And2014CostStudies": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "ARO differences between 2020 and 2014 cost studies", "label": "ARO differences between 2020 and 2014 cost studies", "terseLabel": "ARO differences between 2020 and 2014 cost studies" } } }, "localname": "ARODifferencesBetween2020And2014CostStudies", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AccruedUnbilledRevenues": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 2.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of fees and other revenue, excluding investment income receivable, earned but not yet received, which were recognized in conformity with revenue recognition criteria based on estimates or specific contractual terms.", "label": "Accrued Unbilled Revenues", "verboseLabel": "Accrued unbilled revenues" } } }, "localname": "AccruedUnbilledRevenues", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "nspm_AlternativeInvestmentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Investments in various assets such as registered hedge funds, private equity funds, and property composed of land and improvements.", "label": "Alternative Investments [Member]", "terseLabel": "Alternative investments" } } }, "localname": "AlternativeInvestmentsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "domainItemType" }, "nspm_AlternativeRevenueProgramsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Alternative Revenue Programs [Abstract]", "terseLabel": "Alternative Revenue Programs [Abstract]" } } }, "localname": "AlternativeRevenueProgramsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "nspm_AlternativeandOtherMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Alternative and Other [Member]", "label": "Alternative and Other [Member]", "terseLabel": "Alternative and Other [Member]" } } }, "localname": "AlternativeandOtherMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_AmortizationAndAdjustmentsToDeferredIncomeTaxesOnIncomeTaxRegulatoryAssetsAndLiabilities": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amortization and adjustments to deferred income taxes on income tax regulatory assets and liabilities recorded during the period.", "label": "Amortization and adjustments to deferred income taxes on income tax regulatory assets and liabilities", "terseLabel": "Amortization and adjustments to deferred income taxes on\u00a0income tax regulatory assets and liabilities" } } }, "localname": "AmortizationAndAdjustmentsToDeferredIncomeTaxesOnIncomeTaxRegulatoryAssetsAndLiabilities", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_AmountMPUCPreviouslyDisallowedRelatedToShercoOutage": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount MPUC previously disallowed related to Sherco outage", "label": "Amount MPUC previously disallowed related to Sherco outage", "terseLabel": "Amount MPUC previously disallowed related to Sherco outage" } } }, "localname": "AmountMPUCPreviouslyDisallowedRelatedToShercoOutage", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostRecordedAsCurrentRegulatoryAssets": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount not yet recognized as a component of net periodic benefit cost which has been recorded as current regulatory assets based upon the expected recovery in rates.", "label": "Amounts Not Yet Recognized As Components Of Net Periodic Benefit Cost Recorded As Current Regulatory Assets", "terseLabel": "Amounts Not Yet Recognized As Components Of Net Periodic Benefit Cost Recorded As Current Regulatory Assets", "verboseLabel": "Current regulatory assets" } } }, "localname": "AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostRecordedAsCurrentRegulatoryAssets", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostRecordedAsDeferredIncomeTaxes": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount not yet recognized as a component of net periodic benefit cost which has been recorded as deferred income taxes based upon the expected recovery in rates.", "label": "Amounts Not Yet Recognized As Components Of Net Periodic Benefit Cost Recorded As Deferred Income Taxes", "terseLabel": "Amounts Not Yet Recognized As Components Of Net Periodic Benefit Cost Recorded As Deferred Income Taxes", "verboseLabel": "Deferred income taxes" } } }, "localname": "AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostRecordedAsDeferredIncomeTaxes", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostRecordedAsNetOfTaxAccumulatedOtherComprehensiveIncome": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount not yet recognized as a component of net periodic benefit cost which has been recorded as net-of-tax accumulated other comprehensive income based upon the expected recovery in rates.", "label": "Amounts Not Yet Recognized As Components Of Net Periodic Benefit Cost Recorded As Net-Of-Tax Accumulated Other Comprehensive Income", "terseLabel": "Amounts Not Yet Recognized As Components Of Net Periodic Benefit Cost Recorded As Net-Of-Tax Accumulated Other Comprehensive Income", "verboseLabel": "Net-of-tax accumulated other comprehensive income" } } }, "localname": "AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostRecordedAsNetOfTaxAccumulatedOtherComprehensiveIncome", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostRecordedAsNoncurrentRegulatoryAssets": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount not yet recognized as a component of net periodic benefit cost which has been recorded as noncurrent regulatory assets based upon the expected recovery in rates.", "label": "Amounts Not Yet Recognized As Components Of Net Periodic Benefit Cost Recorded As Noncurrent Regulatory Assets", "verboseLabel": "Noncurrent regulatory assets" } } }, "localname": "AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostRecordedAsNoncurrentRegulatoryAssets", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostTotal": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Total amounts not yet recognized as components of net periodic benefit cost which has been recorded on the balance sheet based upon expected recovery in rates.", "label": "Amounts Not Yet Recognized As Components Of Net Periodic Benefit Cost Total", "terseLabel": "Total", "totalLabel": "Total" } } }, "localname": "AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostTotal", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AnnualInterestCreditingRates": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "annual interest crediting rates", "label": "annual interest crediting rates", "terseLabel": "annual interest crediting rates" } } }, "localname": "AnnualInterestCreditingRates", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails" ], "xbrltype": "monetaryItemType" }, "nspm_Approvedannualaccrualfordecommissioningcosts": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Annual accrual for decommissioning costs approved by the Minnesota Public Utility Commission for 2013 for Minnesota retail customers.", "label": "Approved annual accrual for decommissioning costs", "terseLabel": "Approved annual accrual for decommissioning costs" } } }, "localname": "Approvedannualaccrualfordecommissioningcosts", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AssetRetirementObligationsByClassOfPropertyAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Asset Retirement Obligations by Class of Property [Axis]", "terseLabel": "Asset Retirement Obligations by Class of Property [Axis]" } } }, "localname": "AssetRetirementObligationsByClassOfPropertyAxis", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "stringItemType" }, "nspm_AssetRetirementObligationsByClassOfPropertyDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Asset Retirement Obligations by Class of Property [Domain]", "terseLabel": "Asset Retirement Obligations by Class of Property [Domain]" } } }, "localname": "AssetRetirementObligationsByClassOfPropertyDomain", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "domainItemType" }, "nspm_AssetTransferred": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "asset transferred", "label": "asset transferred", "terseLabel": "asset transferred" } } }, "localname": "AssetTransferred", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails" ], "xbrltype": "monetaryItemType" }, "nspm_AssetsandLiabilitiesLesseeTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Assets and Liabilities, Lessee [Table Text Block]", "label": "Assets and Liabilities, Lessee [Table Text Block]", "terseLabel": "Assets and Liabilities, Lessee [Table Text Block]" } } }, "localname": "AssetsandLiabilitiesLesseeTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "nspm_AssumedAnnualEscalationRateDuringIndependentFuelStorageInstallationAndSiteRestorationPortionOfDecommissioning": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Assumed rate of annual increase in decommissioning costs during independent fuel storage installation and site restoration portion of decommissioning based on periodic site-specific cost studies.", "label": "Assumed annual escalation rate during independent fuel storage installation and site restoration portion of decommissioning", "terseLabel": "Assumed annual escalation rate during independent fuel storage installation and site restoration portion of decommissioning" } } }, "localname": "AssumedAnnualEscalationRateDuringIndependentFuelStorageInstallationAndSiteRestorationPortionOfDecommissioning", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "percentItemType" }, "nspm_AssumedAnnualEscalationRateDuringOperationsAndRadiologicalPortionOfDecommissioning": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Assumed rate of annual increase in decommissioning costs during operations and radiological portion of decommissioning based on periodic site-specific cost studies.", "label": "Assumed annual escalation rate during operations and radiological portion of decommissioning", "terseLabel": "Assumed annual escalation rate during operations and radiological portion of decommissioning" } } }, "localname": "AssumedAnnualEscalationRateDuringOperationsAndRadiologicalPortionOfDecommissioning", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "percentItemType" }, "nspm_Assumedaftertaxrateofreturnusedtodeterminefundingforexternaldecommissioningtrustfund": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The assumed after-tax rate of return used in the annuity approach to determine funding for the external nuclear decommissioning trust fund.", "label": "Assumed after tax rate of return used to determine funding for external decommissioning trust fund", "terseLabel": "Assumed after tax rate of return used to determine funding for external decommissioning trust fund" } } }, "localname": "Assumedaftertaxrateofreturnusedtodeterminefundingforexternaldecommissioningtrustfund", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "percentItemType" }, "nspm_AuditorInformationAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Auditor Information", "label": "Auditor Information [Abstract]" } } }, "localname": "AuditorInformationAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "xbrltype": "stringItemType" }, "nspm_AvailableForSaleSecuritiesAmortizedCostAndFairValueMeasuredOnRecurringBasisTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the amortized cost of available-for-sale securities. Also includes the fair value of these assets measured on a recurring basis in their entirety and the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Available For Sale Securities Amortized Cost And Fair Value Measured On Recurring Basis [Table Text Block]", "verboseLabel": "Cost and Fair Value of Nuclear Decommissioning Fund Investments" } } }, "localname": "AvailableForSaleSecuritiesAmortizedCostAndFairValueMeasuredOnRecurringBasisTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "nspm_AverageRiskFreeInterestRate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Average risk-free interest rate used to calculate effect of discounting obligation", "label": "Average risk-free interest rate", "terseLabel": "Average risk-free interest rate" } } }, "localname": "AverageRiskFreeInterestRate", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "percentItemType" }, "nspm_BasisPointReduction": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Basis Point Reduction", "label": "Basis Point Reduction", "terseLabel": "Basis Point Reduction" } } }, "localname": "BasisPointReduction", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "percentItemType" }, "nspm_BasisPointReductionFirstComplaint": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Basis Point Reduction - First Complaint", "label": "Basis Point Reduction - First Complaint", "terseLabel": "Basis Point Reduction - First Complaint" } } }, "localname": "BasisPointReductionFirstComplaint", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "percentItemType" }, "nspm_BasisPointReductionSecondComplaint": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Basis Point Reduction - Second Complaint", "label": "Basis Point Reduction - Second Complaint", "terseLabel": "Basis Point Reduction - Second Complaint" } } }, "localname": "BasisPointReductionSecondComplaint", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "percentItemType" }, "nspm_BasisPointReductionThirdComplaint": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Basis Point Reduction - Third Complaint", "label": "Basis Point Reduction - Third Complaint", "terseLabel": "Basis Point Reduction - Third Complaint" } } }, "localname": "BasisPointReductionThirdComplaint", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "percentItemType" }, "nspm_BensonpurchasepoweragreementterminationMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Benson purchase power agreement termination [Member]", "label": "Benson purchase power agreement termination [Member]", "terseLabel": "Benson purchase power agreement termination and asset purchase" } } }, "localname": "BensonpurchasepoweragreementterminationMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_BilateralCreditAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Bilateral Credit Agreement [Member]", "label": "Bilateral Credit Agreement [Member]", "terseLabel": "Bilateral Credit Agreement [Member]" } } }, "localname": "BilateralCreditAgreementMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_BorrowingsUnderUtilityMoneyPoolArrangement": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Borrowings made during the reporting period from the utility money pool borrowing arrangement among approved affiliates.", "label": "Borrowings Under Utility Money Pool Arrangement", "verboseLabel": "Borrowings under utility money pool arrangement" } } }, "localname": "BorrowingsUnderUtilityMoneyPoolArrangement", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "nspm_BusinessInterruptionInsuranceCoverageProvidedByNEIL": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Business Interruption Insurance Coverage Provided by NEIL", "label": "Business Interruption Insurance Coverage Provided by NEIL", "terseLabel": "Business Interruption Insurance Coverage Provided by NEIL" } } }, "localname": "BusinessInterruptionInsuranceCoverageProvidedByNEIL", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "nspm_CapacityPaymentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Payments for dispatch control of the energy generating facilities under purchase power agreements (PPAs) with other utilities and energy suppliers to meet system load and energy requirements, replace generation from company-owned units under maintenance or during outages, and meet operating reserve obligations.", "label": "Capacity Payments [Member]", "terseLabel": "Capacity" } } }, "localname": "CapacityPaymentsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "domainItemType" }, "nspm_CapitalizationShortTermDebtLongTermDebtAndEquity": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Total consolidated (as applicable) capitalization of the entity which is comprised of its short-term debt, long-term debt and equity instruments.", "label": "Capitalization, Short term debt, long term debt and equity", "terseLabel": "Capitalization, Short term debt, long term debt and equity" } } }, "localname": "CapitalizationShortTermDebtLongTermDebtAndEquity", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/DividendandOtherCapitalRelatedRestrictionsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_Capx2020TransmissionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "CapX2020 is a joint initiative of 11 transmission-owning utilities in Minnesota and the surrounding region to expand the electric transmission grid to ensure continued electric growth, as well as to support renewable energy expansion.", "label": "CapX2020 Transmission [Member]", "terseLabel": "CapX2020 Transmission" } } }, "localname": "Capx2020TransmissionMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "nspm_CashAndCashEquivalents": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "cash and cash equivalents", "label": "cash and cash equivalents", "terseLabel": "cash and cash equivalents" } } }, "localname": "CashAndCashEquivalents", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_CashFlowsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Cash Flows [Abstract]", "verboseLabel": "Cash Flows [Abstract]" } } }, "localname": "CashFlowsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "nspm_CoalMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long-term fuel purchase commitment for coal.", "label": "Coal [Member]", "terseLabel": "Coal" } } }, "localname": "CoalMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails" ], "xbrltype": "domainItemType" }, "nspm_CollateralAlreadyPostedAdequateAssuranceClausesAggregateFairValue": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features for adequate assurance clauses.", "label": "Collateral Already Posted Adequate Assurance Clauses Aggregate Fair Value", "verboseLabel": "Collateral posted related to adequate assurance clauses in derivative contracts" } } }, "localname": "CollateralAlreadyPostedAdequateAssuranceClausesAggregateFairValue", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditRelatedContingentFeaturesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_CommercialandIndustrialCustomersMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Commercial and Industrial Customers [Member]", "label": "Commercial and Industrial Customers [Member]", "terseLabel": "C&I" } } }, "localname": "CommercialandIndustrialCustomersMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_CommingledFundsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "An investment that pools funds from many investors to invest in a combination of underlying investments, primarily equity and bond investments.", "label": "Commingled Funds [Member]", "terseLabel": "Commingled Funds" } } }, "localname": "CommingledFundsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "domainItemType" }, "nspm_CommodityTradingContractMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to commodity prices.", "label": "Commodity Trading Contract [Member]", "terseLabel": "Commodity Trading Contract" } } }, "localname": "CommodityTradingContractMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "domainItemType" }, "nspm_CommonandOtherPropertyCommonMiscellaneousMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Common and Other Property Common Miscellaneous [Member]", "label": "Common and Other Property Common Miscellaneous [Member]", "terseLabel": "Common and Other Property Common Miscellaneous" } } }, "localname": "CommonandOtherPropertyCommonMiscellaneousMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "domainItemType" }, "nspm_ConservationProgramsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Includes costs for conservation programs, as well as incentives allowed in certain jurisdictions.", "label": "Conservation Programs [Member]", "terseLabel": "Conservation Programs" } } }, "localname": "ConservationProgramsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_ConservationandDemandSideManagementProgramExpenses": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 7.0, "parentTag": "us-gaap_CostsAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Costs incurred for energy conservation, weatherization and other programs to conserve or manage energy use by customers.", "label": "Conservation and Demand Side Management Program Expenses", "terseLabel": "Conservation program expenses" } } }, "localname": "ConservationandDemandSideManagementProgramExpenses", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "nspm_ContractValuationAdjustmentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fair value adjustments pertaining to certain long-term purchased power agreements used to meet energy capacity requirements.", "label": "Contract Valuation Adjustments [Member]", "terseLabel": "Contract Valuation Adjustments" } } }, "localname": "ContractValuationAdjustmentsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "nspm_CostofnaturalGasSoldandTransported": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 3.0, "parentTag": "us-gaap_CostsAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cost of natural Gas Sold and Transported", "label": "Cost of natural Gas Sold and Transported", "terseLabel": "Cost of natural gas sold and transported" } } }, "localname": "CostofnaturalGasSoldandTransported", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "nspm_CreditFacilitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Credit Facilities [Abstract]", "label": "Credit Facilities [Abstract]", "terseLabel": "Credit Facilities [Abstract]" } } }, "localname": "CreditFacilitiesAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "xbrltype": "stringItemType" }, "nspm_CreditLossesTopic326ASCTopic326": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Credit Losses, Topic 326 (ASC Topic 326)", "label": "Credit Losses, Topic 326 (ASC Topic 326)", "negatedTerseLabel": "Adoption of ASC Topic 326", "terseLabel": "Credit Losses, Topic 326 (ASC Topic 326)" } } }, "localname": "CreditLossesTopic326ASCTopic326", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/AccountingPronouncementsRecentlyAdoptedDetails", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "monetaryItemType" }, "nspm_CreditQualityIndicatorAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by credit quality indicator.", "label": "Credit Quality Indicator [Axis]", "terseLabel": "Credit Quality Indicator [Axis]" } } }, "localname": "CreditQualityIndicatorAxis", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "stringItemType" }, "nspm_CreditQualityIndicatorDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Credit quality indicators related to credit exposure.", "label": "Credit Quality Indicator [Domain]", "terseLabel": "Credit Quality Indicator [Domain]" } } }, "localname": "CreditQualityIndicatorDomain", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "domainItemType" }, "nspm_CurrentChangeInUnrecognizedTaxExpenseBenefit": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The component of income tax expense for the period representing the current change in unrecognized tax expense (benefit).", "label": "Current Change In Unrecognized Tax Expense Benefit", "terseLabel": "Current change in unrecognized tax expense (benefit)" } } }, "localname": "CurrentChangeInUnrecognizedTaxExpenseBenefit", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_Customerrefundofpreviouslyrecoveredpurchasedpowercosts": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Customer refund of previously recovered purchased power costs", "label": "Customer refund of previously recovered purchased power costs", "terseLabel": "Customer refund of previously recovered purchased power costs" } } }, "localname": "Customerrefundofpreviouslyrecoveredpurchasedpowercosts", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DeferredChangeInUnrecognizedTaxExpenseBenefit": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The component of income tax expense for the period representing the deferred change in unrecognized tax expense (benefit).", "label": "Deferred Change In Unrecognized Tax Expense Benefit", "terseLabel": "Deferred change in unrecognized tax expense (benefit)" } } }, "localname": "DeferredChangeInUnrecognizedTaxExpenseBenefit", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_DeferredElectricEnergyCostsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fuel costs recovered from customers in excess of fuel costs incurred.", "label": "Deferred Electric Energy Costs [Member]", "terseLabel": "Deferred Electric Energy Costs" } } }, "localname": "DeferredElectricEnergyCostsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "nspm_DeferredFinancingCostsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Deferred Financing Costs [Abstract]", "label": "Deferred Financing Costs [Abstract]", "terseLabel": "Deferred Financing Costs [Abstract]" } } }, "localname": "DeferredFinancingCostsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "xbrltype": "stringItemType" }, "nspm_DeferredFuelCosts": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Deferred fuel costs", "label": "Deferred fuel costs", "terseLabel": "Deferred fuel costs" } } }, "localname": "DeferredFuelCosts", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_DeferredITCs": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Deferred ITCs", "label": "Deferred ITCs", "terseLabel": "Deferred ITCs" } } }, "localname": "DeferredITCs", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_DeferredTaxExpenseBenefitExcludingSelectedItems": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Deferred income tax expense (benefit) recorded during the period, excluding the following: (1) tax benefit allocated to other comprehensive income, (2) amortization and adjustments to deferred income taxes on regulatory assets and liabilities, and (3) other miscellaneous items.", "label": "Deferred tax expense (benefit) excluding selected items", "terseLabel": "Deferred tax expense excluding items below" } } }, "localname": "DeferredTaxExpenseBenefitExcludingSelectedItems", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_DeferredTaxLiabilityPensionExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Deferred tax liability - Pension expense", "label": "Deferred tax liability - Pension expense", "terseLabel": "Pension expense" } } }, "localname": "DeferredTaxLiabilityPensionExpense", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanAlternativeInvestmentsFairValueOfPlanAssets": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets", "label": "Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets", "terseLabel": "Plan assets at net asset value" } } }, "localname": "DefinedBenefitPlanAlternativeInvestmentsFairValueOfPlanAssets", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongtermReturnonAssetsForNextFiscalYear": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "An assumption as to the rate of return on plan assets for the next fiscal year reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets For Next Fiscal Year", "terseLabel": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets For Next Fiscal Year", "verboseLabel": "Expected average long-term rate of return on assets for next fiscal year (as a percent)" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongtermReturnonAssetsForNextFiscalYear", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "nspm_DefinedBenefitPlanCreditsCostsNotRecognizedDueToEffectsofRegulation": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Defined Benefit Plan Credits (Costs) Not Recognized Due To Effects of Regulation", "label": "Defined Benefit Plan Credits (Costs) Not Recognized Due To Effects of Regulation", "negatedLabel": "Effects of regulation", "negatedTerseLabel": "Defined Benefit Plan Credits (Costs) Not Recognized Due To Effects of Regulation" } } }, "localname": "DefinedBenefitPlanCreditsCostsNotRecognizedDueToEffectsofRegulation", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanHealthCareCostTrendRateAssumedPost65": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Post-65", "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Post-65", "terseLabel": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Post-65" } } }, "localname": "DefinedBenefitPlanHealthCareCostTrendRateAssumedPost65", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "nspm_DefinedBenefitPlanHealthCareCostTrendRateAssumedPre65": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Pre-65", "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Pre-65", "terseLabel": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Pre-65" } } }, "localname": "DefinedBenefitPlanHealthCareCostTrendRateAssumedPre65", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "nspm_DefinedBenefitPlanNetBenefitCostCreditRecognizedBeforeRegulatoryAdjustments": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 }, "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The total mount of net periodic benefit cost, before regulatory adjustments, for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments, before regulatory adjustments.", "label": "Defined Benefit Plan Net Benefit Cost (Credit) Recognized Before Regulatory Adjustments", "terseLabel": "Net periodic pension cost", "totalLabel": "Net periodic postretirement benefit cost" } } }, "localname": "DefinedBenefitPlanNetBenefitCostCreditRecognizedBeforeRegulatoryAdjustments", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanNetProjectedBenefitPaymentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Defined Benefit Plan, Net Projected Benefit Payments [Abstract]", "terseLabel": "Defined Benefit Plan, Net Projected Benefit Payments [Abstract]" } } }, "localname": "DefinedBenefitPlanNetProjectedBenefitPaymentsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "stringItemType" }, "nspm_DefinedBenefitPlanNetProjectedBenefitPaymentsInFiveFiscalYearsThereafter": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of the benefits expected to be paid, net of the prescription drug subsidy receipts expected to be received in the five fiscal years thereafter (the aggregate net amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).", "label": "Defined Benefit Plan Net Projected Benefit Payments In Five Fiscal Years Thereafter", "verboseLabel": "2027-2031" } } }, "localname": "DefinedBenefitPlanNetProjectedBenefitPaymentsInFiveFiscalYearsThereafter", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanNetProjectedBenefitPaymentsInYearFive": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of the benefits expected to be paid, net of the prescription drug subsidy receipts expected to be received in Year 5 after the balance sheet date.", "label": "Defined Benefit Plan Net Projected Benefit Payments In Year Five", "verboseLabel": "2026" } } }, "localname": "DefinedBenefitPlanNetProjectedBenefitPaymentsInYearFive", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanNetProjectedBenefitPaymentsInYearFour": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of the benefits expected to be paid, net of the prescription drug subsidy receipts expected to be received in Year 4 after the balance sheet date.", "label": "Defined Benefit Plan Net Projected Benefit Payments In Year Four", "verboseLabel": "2025" } } }, "localname": "DefinedBenefitPlanNetProjectedBenefitPaymentsInYearFour", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanNetProjectedBenefitPaymentsInYearOne": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of the benefits expected to be paid, net of the prescription drug subsidy receipts expected to be received in Year 1 after the balance sheet date.", "label": "Defined Benefit Plan Net Projected Benefit Payments In Year One", "verboseLabel": "2022" } } }, "localname": "DefinedBenefitPlanNetProjectedBenefitPaymentsInYearOne", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanNetProjectedBenefitPaymentsInYearThree": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of the benefits expected to be paid, net of the prescription drug subsidy receipts expected to be received in Year 3 after the balance sheet date.", "label": "Defined Benefit Plan Net Projected Benefit Payments In Year Three", "verboseLabel": "2024" } } }, "localname": "DefinedBenefitPlanNetProjectedBenefitPaymentsInYearThree", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanNetProjectedBenefitPaymentsInYearTwo": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of the benefits expected to be paid, net of the prescription drug subsidy receipts expected to be received in Year 2 after the balance sheet date.", "label": "Defined Benefit Plan Net Projected Benefit Payments In Year Two", "verboseLabel": "2023" } } }, "localname": "DefinedBenefitPlanNetProjectedBenefitPaymentsInYearTwo", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DefinedBenefitPlanNumberOfPensionPlansToWhichContributionsWereMade": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of pension plans to which contributions were made during the period.", "label": "Defined benefit plan number of pension plans to which contributions were made", "verboseLabel": "Number of pension plans to which contributions were made" } } }, "localname": "DefinedBenefitPlanNumberOfPensionPlansToWhichContributionsWereMade", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "integerItemType" }, "nspm_DefinedBenefitPlanPeriodUntilUltimateHealthCareTrendRateIsReached": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The time period (in years) until the ultimate health care cost trend rate is expected to be reached.", "label": "Defined Benefit Plan Period Until Ultimate Health Care Trend Rate Is Reached", "terseLabel": "Period until ultimate trend rate is reached (in years)" } } }, "localname": "DefinedBenefitPlanPeriodUntilUltimateHealthCareTrendRateIsReached", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DepreciationExpenseExpressedAsPercentageOfAverageDepreciableProperty": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Depreciation expense expressed as a percentage of average depreciable property.", "label": "Depreciation expense expressed as a percentage of average depreciable property", "terseLabel": "Depreciation expense expressed as a percentage of average depreciable property" } } }, "localname": "DepreciationExpenseExpressedAsPercentageOfAverageDepreciableProperty", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "percentItemType" }, "nspm_DerivativeGrossLiabilityPositionAggregateFairValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a gross liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.", "label": "Derivative, Gross Liability Position, Aggregate Fair Value", "terseLabel": "Derivative instruments in a gross liability position" } } }, "localname": "DerivativeGrossLiabilityPositionAggregateFairValue", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditRelatedContingentFeaturesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DerivativeGrossLiabilityWithCrossDefaultPositionAggregateFairValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Derivative, Gross Liability with Cross Default Position, Aggregate Fair Value", "label": "Derivative, Gross Liability with Cross Default Position, Aggregate Fair Value", "terseLabel": "Derivative, Gross Liability with Cross Default Position, Aggregate Fair Value" } } }, "localname": "DerivativeGrossLiabilityWithCrossDefaultPositionAggregateFairValue", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditRelatedContingentFeaturesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DerivativeInstrumentsGainLossReclassifiedToRegulatoryAssetsAndLiabilitiesNet": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Derivative Instruments Gain (Loss) Reclassified To Regulatory Assets And Liabilities Net", "label": "Derivative Instruments Gain (Loss) Reclassified To Regulatory Assets And Liabilities Net", "negatedTerseLabel": "Pre-tax fair value gains (losses) recognized during the period in regulatory (assets) and liabilities" } } }, "localname": "DerivativeInstrumentsGainLossReclassifiedToRegulatoryAssetsAndLiabilitiesNet", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DifferencesBetweenBookAndTaxBasisOfProperty": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Differences between book and tax basis of property", "label": "Differences between book and tax basis of property", "terseLabel": "Differences between book and tax bases of property" } } }, "localname": "DifferencesBetweenBookAndTaxBasisOfProperty", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_DifferencesinDiscountRateandMarketRiskPremium": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Differences in discount rate and market risk premium between regulated basis and GAAP basis.", "label": "Differences in Discount Rate and Market Risk Premium", "terseLabel": "Differences in Discount Rate and Market Risk Premium" } } }, "localname": "DifferencesinDiscountRateandMarketRiskPremium", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DiscountedDecommissioningCostObligation": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of a regulatory decommissioning obligation associated with a legal obligation that a firm incurs when it constructs or operates an asset that must eventually be withdrawn from active service. This may include operating assets such as nuclear power plants or shipping vessels.", "label": "Discounted decommissioning cost obligation", "terseLabel": "Discounted decommissioning cost obligation" } } }, "localname": "DiscountedDecommissioningCostObligation", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DiscountedDecommissioningObligationComparedToAssetsCurrentlyHeldInTrust": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Net amount of discounted decommissioning cost obligation compared to assets held in external decommissioning trust.", "label": "Discounted Decommissioning Obligation Compared To Assets Currently Held In Trust", "terseLabel": "Discounted Decommissioning Obligation Compared To Assets Currently Held In Trust" } } }, "localname": "DiscountedDecommissioningObligationComparedToAssetsCurrentlyHeldInTrust", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_DividendandOtherCapitalRelatedRestrictionsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Dividend and Other Capital-Related Restrictions [Abstract]", "label": "Dividend and Other Capital-Related Restrictions [Abstract]", "terseLabel": "Dividend and Other Capital-Related Restrictions [Abstract]" } } }, "localname": "DividendandOtherCapitalRelatedRestrictionsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "xbrltype": "stringItemType" }, "nspm_DoeSettlementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Funds received from the United States Department of Energy (DOE) for damages caused by the DOE's failure to meet its statutory and contractual obligations under the Nuclear Waste Policy Act of 1982.", "label": "DOE Settlement [Member]", "terseLabel": "DOE Settlement" } } }, "localname": "DoeSettlementMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "nspm_EffectOfDiscountingObligationUsingRiskFreeInterestRate": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Decrease in estimated decommissioning cost obligation due to discounting the obligation using a risk-free interest rate.", "label": "Effect Of Discounting Obligation Using Risk Free Interest Rate", "terseLabel": "Effect Of Discounting Obligation Using Risk Free Interest Rate" } } }, "localname": "EffectOfDiscountingObligationUsingRiskFreeInterestRate", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_EffectOfEscalatingCostsToCurrentYearDollars": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Increase in estimated decommissioning cost obligation due to the effect of escalating costs to current year dollars.", "label": "Effect Of Escalating Costs To Current Year Dollars", "terseLabel": "Effect Of Escalating Costs To Current Year Dollars" } } }, "localname": "EffectOfEscalatingCostsToCurrentYearDollars", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_EffectOfEscalatingCostsToPaymentDate": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Increase in estimated decommissioning cost obligation due to the effect of escalating costs to anticipated payment date.", "label": "Effect Of Escalating Costs To Payment Date", "terseLabel": "Effect Of Escalating Costs To Payment Date" } } }, "localname": "EffectOfEscalatingCostsToPaymentDate", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_EffectiveIncomeTaxRateReconcilationChangeInUnrecognizedTaxBenefitsPercent": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Effective Income Tax Rate Reconcilation, Change in unrecognized tax benefits, percent", "label": "Effective Income Tax Rate Reconcilation, Change in unrecognized tax benefits, percent", "terseLabel": "Change in unrecognized tax benefits" } } }, "localname": "EffectiveIncomeTaxRateReconcilationChangeInUnrecognizedTaxBenefitsPercent", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "nspm_EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackPercent": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Effective Income Tax Rate Reconciliation, Net Operating Loss Carryback, Percent", "label": "Effective Income Tax Rate Reconciliation, Net Operating Loss Carryback, Percent", "terseLabel": "NOL Carryback" } } }, "localname": "EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackPercent", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "nspm_EffectiveIncomeTaxRateReconciliationOtherRegulatoryItemsPercent": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Effective Income Tax Rate Reconciliation, Other Regulatory Items, Percent", "label": "Effective Income Tax Rate Reconciliation, Other Regulatory Items, Percent", "terseLabel": "Plant regulatory differences (a)" } } }, "localname": "EffectiveIncomeTaxRateReconciliationOtherRegulatoryItemsPercent", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "nspm_ElectricCommodityContractMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to electric commodity prices.", "label": "Electric Commodity Contract [Member]", "terseLabel": "Electric Commodity", "verboseLabel": "Electric Commodity Contract" } } }, "localname": "ElectricCommodityContractMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "nspm_ElectricCommodityMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to electric commodity prices.", "label": "Electric Commodity [Member]", "terseLabel": "Electric Commodity" } } }, "localname": "ElectricCommodityMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommodityDerivativesDetails" ], "xbrltype": "domainItemType" }, "nspm_ElectricFuelandPurchasedPower": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 5.0, "parentTag": "us-gaap_CostsAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Electric Fuel and Purchased Power", "label": "Electric Fuel and Purchased Power", "terseLabel": "Electric fuel and purchased power" } } }, "localname": "ElectricFuelandPurchasedPower", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "nspm_ElectricPlantOtherSourcesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Asset retirement obligations for other production sources assets associated with electric plant.", "label": "Electric Plant Other Sources [Member]", "terseLabel": "Electric Plant Other" } } }, "localname": "ElectricPlantOtherSourcesMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "domainItemType" }, "nspm_ElectricPlantSteamAndOtherProductionAshContainmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Asset retirement obligations for steam and other production ash containment assets associated with electric plant.", "label": "Electric Plant Steam and Other Production Ash Containment [Member]", "terseLabel": "Electric Plant Steam Production Ash Containment" } } }, "localname": "ElectricPlantSteamAndOtherProductionAshContainmentMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "domainItemType" }, "nspm_ElectricPlantWindProductionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Asset retirement obligations for wind production assets associated with electric plant.", "label": "Electric Plant Wind Production [Member]", "terseLabel": "Electric Plant Wind Production" } } }, "localname": "ElectricPlantWindProductionMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "domainItemType" }, "nspm_EnergyMarketingPolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Describes the accounting policy related to energy marketing activities (trading activities). Energy marketing (trading activities) are when entities engage in both financial and physical trading to increase profits and manage their commodity price risk. This includes trade of energy and energy-related products and may include the use of a variety of financial instruments, including forward contracts, options and swaps.", "label": "Energy Marketing [Policy Text Block]", "terseLabel": "Commodity Trading Operations" } } }, "localname": "EnergyMarketingPolicyTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "nspm_EnergyPaymentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Payments for the actual production of energy under purchase power agreements (PPAs) with other utilities and energy suppliers to meet system load and energy requirements, replace generation from company-owned units under maintenance or during outages, and meet operating reserve obligations.", "label": "Energy Payments [Member]", "verboseLabel": "Energy" } } }, "localname": "EnergyPaymentsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "domainItemType" }, "nspm_EntitysRecordedProvisionforRevenueSubjectToRefund": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The entity's recorded provision for revenue subject to refund.", "label": "Entity's Recorded Provision for Revenue Subject To Refund", "terseLabel": "Entity's Recorded Provision for Revenue Subject To Refund" } } }, "localname": "EntitysRecordedProvisionforRevenueSubjectToRefund", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_EnvironmentalRegulationAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by type of environmental regulation.", "label": "Environmental Regulation [Axis]", "terseLabel": "Environmental Regulation [Axis]" } } }, "localname": "EnvironmentalRegulationAxis", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "stringItemType" }, "nspm_EnvironmentalRegulationDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Identifies by name or nature the environmental regulation.", "label": "Environmental Regulation [Domain]", "terseLabel": "Environmental Regulation [Domain]" } } }, "localname": "EnvironmentalRegulationDomain", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "domainItemType" }, "nspm_EnvironmentallosscontingencydisclosureLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "[Line Items] for Environmental loss contingency disclosure [Table]", "label": "Environmental loss contingency disclosure [Line Items]", "terseLabel": "Loss Contingencies [Line Items]" } } }, "localname": "EnvironmentallosscontingencydisclosureLineItems", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMGPSitesDetails" ], "xbrltype": "stringItemType" }, "nspm_EnvironmentallosscontingencydisclosureTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Environmental loss contingency disclosure [Table]", "label": "Environmental loss contingency disclosure [Table]", "terseLabel": "Loss Contingencies [Table]" } } }, "localname": "EnvironmentallosscontingencydisclosureTable", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMGPSitesDetails" ], "xbrltype": "stringItemType" }, "nspm_EquityToTotalCapitalizationRatioHighEndOfRange": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The high end of the range of the ratio of equity to net capital required to be maintained by the entity to engage in issuance of long-term debt securities.", "label": "Equity to total capitalization ratio, high end of range", "terseLabel": "Equity to total capitalization ratio, high end of range (in hundredths)" } } }, "localname": "EquityToTotalCapitalizationRatioHighEndOfRange", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/DividendandOtherCapitalRelatedRestrictionsDetails" ], "xbrltype": "percentItemType" }, "nspm_EquityToTotalCapitalizationRatioLowEndOfRange": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The low end of the range of the ratio of equity to net capital required to be maintained by the entity to engage in issuance of long-term debt securities.", "label": "Equity to total capitalization ratio, low end of range", "terseLabel": "Equity to total capitalization ratio, low end of range (in hundredths)" } } }, "localname": "EquityToTotalCapitalizationRatioLowEndOfRange", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/DividendandOtherCapitalRelatedRestrictionsDetails" ], "xbrltype": "percentItemType" }, "nspm_Equitytototalcapitalizationratio": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Equity-to-total capitalization ratio is equal to (i) common stock plus surplus divided by (ii) the sum of common stock plus surplus plus long-term debt.", "label": "Equity to total capitalization ratio", "terseLabel": "Equity to total capitalization ratio" } } }, "localname": "Equitytototalcapitalizationratio", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/DividendandOtherCapitalRelatedRestrictionsDetails" ], "xbrltype": "percentItemType" }, "nspm_EstimatedDecommissioningCostObligationFromMostRecentlyApprovedStudy": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Estimated decommissioning cost obligation based on most recently approved periodic site-specific cost study.", "label": "Estimated Decommissioning Cost Obligation From Most Recently Approved Study", "terseLabel": "Estimated Decommissioning Cost Obligation From Most Recently Approved Study" } } }, "localname": "EstimatedDecommissioningCostObligationFromMostRecentlyApprovedStudy", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_EstimatedDecommissioningCostObligationInCurrentDollars": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Estimated decommissioning cost obligation in current year dollars based on most recently approved periodic site-specific cost study and effect of escalating costs to current year dollars.", "label": "Estimated Decommissioning Cost Obligation In Current Dollars", "terseLabel": "Estimated Decommissioning Cost Obligation In Current Dollars" } } }, "localname": "EstimatedDecommissioningCostObligationInCurrentDollars", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_EstimatedFutureDecommissioningCostsUndiscounted": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Estimated undiscounted future decommissioning costs based on periodic site-specific cost study and effect of escalating costs to anticipated payment date.", "label": "Estimated Future Decommissioning Costs Undiscounted", "terseLabel": "Estimated Future Decommissioning Costs Undiscounted" } } }, "localname": "EstimatedFutureDecommissioningCostsUndiscounted", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_Estimatedcostofclosureofanimpoundment": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Estimated cost of closure of an impoundment", "label": "Estimated cost of closure of an impoundment", "terseLabel": "Estimated cost of closure of an impoundment" } } }, "localname": "Estimatedcostofclosureofanimpoundment", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "monetaryItemType" }, "nspm_ExcessdeferredtaxesTCJAMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Excess deferred taxes - TCJA [Member]", "label": "Excess deferred taxes - TCJA [Member]", "terseLabel": "Excess deferred taxes - TCJA" } } }, "localname": "ExcessdeferredtaxesTCJAMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_ExpenseTypeAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Expense Type [Axis]", "label": "Expense Type [Axis]", "terseLabel": "Expense Type [Axis]" } } }, "localname": "ExpenseTypeAxis", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "nspm_ExpenseTypeDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "[Domain] for Expense Type [Axis]", "label": "Expense Type [Domain]", "terseLabel": "Expense Type [Domain]" } } }, "localname": "ExpenseTypeDomain", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "nspm_FERCProceedingMISOROEComplaintMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "FERC Proceeding, MISO ROE Complaint [Member]", "label": "FERC Proceeding, MISO ROE Complaint [Member]", "terseLabel": "FERC Proceeding, MISO ROE Complaint [Member]" } } }, "localname": "FERCProceedingMISOROEComplaintMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "domainItemType" }, "nspm_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the fair value measurement of net assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings or recognized in other comprehensive income, purchases, sales, issuances, and settlements, and transfers in and transfers out of Level 3.", "label": "Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table Text Block]", "verboseLabel": "Changes in Level 3 Commodity Derivatives" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "nspm_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetLossesGainsRecognizedAsRegulatoryAssetsAndLiabilities": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "This element represents total gains (losses) for the period (realized and unrealized), arising from net assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are recognized in regulatory assets and liabilities.", "label": "Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Liability Net Losses Gains Recognized As Regulatory Assets And Liabilities", "terseLabel": "Net gains (losses) recognized as regulatory assets and liabilities" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetLossesGainsRecognizedAsRegulatoryAssetsAndLiabilities", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_FederalBenefit": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The federal tax effects resulting in a benefit under enacted tax laws.", "label": "Federal Benefit", "terseLabel": "Federal Benefit" } } }, "localname": "FederalBenefit", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_FederalCleanWaterActSection316bMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Regulations adopted by the Environmental Protection Agency under the Federal Clean Water Act Section 316 (b)", "label": "Federal Clean Water Act Section 316 (b) [Member]", "terseLabel": "Federal Clean Water Act Section 316 (b) [Member]" } } }, "localname": "FederalCleanWaterActSection316bMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "domainItemType" }, "nspm_FederalCoalAshRegulationMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Federal Coal Ash Regulation", "label": "Federal Coal Ash Regulation [Member]", "terseLabel": "Federal Coal Ash Regulation [Domain]" } } }, "localname": "FederalCoalAshRegulationMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "domainItemType" }, "nspm_FederalDetriment": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The federal tax effects resulting in a detriment under enacted tax laws.", "label": "Federal detriment", "terseLabel": "Federal detriment" } } }, "localname": "FederalDetriment", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_FederalEnergyRegulatoryCommissionFERCMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The United States federal regulatory agency with jurisdiction over interstate electricity sales, wholesale electric rates, hydroelectric licensing, natural gas pricing, and oil pipeline rates.", "label": "Federal Energy Regulatory Commission (FERC) [Member]", "terseLabel": "Federal Energy Regulatory Commission (FERC) [Member]" } } }, "localname": "FederalEnergyRegulatoryCommissionFERCMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "domainItemType" }, "nspm_FederalNOLCarryforward": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Federal NOL carryforward", "label": "Federal NOL carryforward", "terseLabel": "Federal NOL carryforward" } } }, "localname": "FederalNOLCarryforward", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_FinancialImpactOfQualifyingCashFlowHedgesOnAccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Financial Impact Of Qualifying Cash Flow Hedges On Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]", "verboseLabel": "Financial Impact of Qualifying Cash Flow Hedges on Accumulated Other Comprehensive Income (Loss) [Roll Forward]" } } }, "localname": "FinancialImpactOfQualifyingCashFlowHedgesOnAccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "stringItemType" }, "nspm_FundedStatusOfNuclearDecommissioningObligationTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the funded status of the nuclear decommissioning obligation related to nuclear facilities based on approved regulatory recovery parameters from the most recently approved decommissioning study.", "label": "Funded Status of Nuclear Decommissioning Obligation [Table Text Block]", "terseLabel": "Funded Status of Nuclear Decommissioning Obligation" } } }, "localname": "FundedStatusOfNuclearDecommissioningObligationTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "nspm_GasPipelineInspectionAndRemediationCostsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Gas pipeline inspection costs incurred that would otherwise be charged to expense. These costs are included in allowable costs for rate making purposes and future revenue will be provided to permit recovery of such incurred costs.", "label": "Gas Pipeline Inspection and Remediation Costs [Member]", "terseLabel": "Gas Pipeline Inspection and Remediation Costs" } } }, "localname": "GasPipelineInspectionAndRemediationCostsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_GeneratingCapacityUnderLongTermPurchasedPowerAgreements": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Generating capacity under long-term purchased power agreements.", "label": "Generating capacity under long term purchased power agreements", "terseLabel": "Generating capacity (in MW)" } } }, "localname": "GeneratingCapacityUnderLongTermPurchasedPowerAgreements", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesVariableInterestEntitiesDetails" ], "xbrltype": "powerItemType" }, "nspm_GrandMeadowLineAndSubstationMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Grand Meadow is a 67 unit wind farm capable of producing 100.5 megawatts and includes a subsidiary station of an electricity generation, transmission and distribution system where voltage is transformed from high to low or the reverse using transformers.", "label": "Grand Meadow Line and Substation [Member]", "terseLabel": "Grand Meadow" } } }, "localname": "GrandMeadowLineAndSubstationMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "nspm_HuntleyWilmarthMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Huntley Wilmarth transmission line from Northern Iowa to southern Minnesota", "label": "Huntley Wilmarth [Member]", "terseLabel": "Huntley Wilmarth" } } }, "localname": "HuntleyWilmarthMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "nspm_ImpactOfDerivativeActivityOnAccumulatedOtherComprehensiveLossRegulatoryAssetsAndLiabilitiesAndIncomeAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Impact of Derivative Activity on Accumulated Other Comprehensive Loss Regulatory Assets and Liabilities and Income [Abstract]", "verboseLabel": "Impact of Derivative Activity on Accumulated Other Comprehensive Loss, Regulatory Assets and Liabilities, and Income [Abstract]" } } }, "localname": "ImpactOfDerivativeActivityOnAccumulatedOtherComprehensiveLossRegulatoryAssetsAndLiabilitiesAndIncomeAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "stringItemType" }, "nspm_IncomeTaxExpenseMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "income tax expense", "label": "income tax expense [Member]", "terseLabel": "income tax expense [Member]" } } }, "localname": "IncomeTaxExpenseMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "domainItemType" }, "nspm_IndeterminateCostsIncurredAssetRetirementObligationDueToAsbestos": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Indeterminate Costs Incurred, Asset Retirement Obligation Due to Asbestos", "label": "Indeterminate Costs Incurred, Asset Retirement Obligation Due to Asbestos", "terseLabel": "Indeterminate Costs Incurred, Asset Retirement Obligation Due to Asbestos" } } }, "localname": "IndeterminateCostsIncurredAssetRetirementObligationDueToAsbestos", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/IndeterminateAROsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_InterchangeMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Related party transactions through the interchange agreement", "label": "Interchange [Member]", "terseLabel": "Interchange" } } }, "localname": "InterchangeMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_InterestPayablerelatedtoUnrecognizedTaxBenefitsTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Interest Payable related to Unrecognized Tax Benefits", "label": "Interest Payable related to Unrecognized Tax Benefits [Table Text Block]", "terseLabel": "Interest Payable related to Unrecognized Tax Benefits" } } }, "localname": "InterestPayablerelatedtoUnrecognizedTaxBenefitsTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "nspm_InterruptionInsuranceCoverageLimitsForNuclearPlantSites": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Insurance coverage limits for property damage and site decontamination cleanup costs for each of the nuclear plant sites.", "label": "Interruption Insurance Coverage Limits For Nuclear Plant Sites", "verboseLabel": "Insurance coverage limits for NSP-Minnesota's nuclear plant sites" } } }, "localname": "InterruptionInsuranceCoverageLimitsForNuclearPlantSites", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "nspm_Inventorytransferstoplantpropertyandequipment": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) of plant, property and equipment reclassified from inventory.", "label": "Inventory transfers to plant, property and equipment", "terseLabel": "Inventory transfers to property, plant and equipment" } } }, "localname": "Inventorytransferstoplantpropertyandequipment", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "nspm_InvestmentTaxCreditDeferralsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Investment tax credits which are deferred as regulatory liabilities and are expected to be recovered from customers through the ratemaking process.", "label": "Investment Tax Credit Deferrals [Member]", "terseLabel": "Investment Tax Credit Deferrals" } } }, "localname": "InvestmentTaxCreditDeferralsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "nspm_InvestmentsInUtilityMoneyPoolArrangement": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Investments made during the reporting period into the utility money pool borrowing arrangement among approved affiliates.", "label": "Investments In Utility Money Pool Arrangement", "negatedLabel": "Investments in utility money pool arrangement" } } }, "localname": "InvestmentsInUtilityMoneyPoolArrangement", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "nspm_InvestmentsReceivableInUtilityMoneyPoolArrangement": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Investments in the utility money pool borrowing arrangement among approved affiliates, which are due within 1 year (or 1 business cycle).", "label": "Investments Receivable in Utility Money Pool Arrangement", "terseLabel": "Investments in money pool arrangements" } } }, "localname": "InvestmentsReceivableInUtilityMoneyPoolArrangement", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "nspm_JointOwnershipAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Joint Ownership [Abstract]", "label": "Joint Ownership [Abstract]", "terseLabel": "Joint Ownership [Abstract]" } } }, "localname": "JointOwnershipAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "xbrltype": "stringItemType" }, "nspm_JointlyOwnedUtilityPlantNameAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Identifies the name of the jointly owned utility plant.", "label": "Jointly Owned Utility Plant Name [Axis]", "terseLabel": "Jointly Owned Utility Plant Name [Axis]" } } }, "localname": "JointlyOwnedUtilityPlantNameAxis", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "stringItemType" }, "nspm_JointlyOwnedUtilityPlantNameDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Names of the jointly owned utility plants.", "label": "Jointly Owned Utility Plant Name [Domain]", "terseLabel": "Jointly Owned Utility Plant Name [Domain]" } } }, "localname": "JointlyOwnedUtilityPlantNameDomain", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "nspm_LaurentianEnergyAuthoritypurchasepoweragreementterminationMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Recoverable costs associated with the termination of the Laurentian Energy Authority purchase power agreement termination.", "label": "Laurentian Energy Authority purchase power agreement termination [Member]", "terseLabel": "Laurentian biomass PPA termination" } } }, "localname": "LaurentianEnergyAuthoritypurchasepoweragreementterminationMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_LiabilityForEstimatedCostToComplyWithRegulation": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Estimated undiscounted amount of the accrual required to comply with required regulation.", "label": "Liability for estimated cost to comply with regulation", "terseLabel": "Liability for estimated cost to comply with regulation" } } }, "localname": "LiabilityForEstimatedCostToComplyWithRegulation", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "monetaryItemType" }, "nspm_Liabilityforestimatedcosttocomplywithentrainmentregulation": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Estimated undiscounted amount of the accrual required to comply with required entrainment regulation under the federal Clean Water Act Section 316(b) rule.", "label": "Liability for estimated cost to comply with entrainment regulation", "terseLabel": "Liability for estimated cost to comply with impingement and entrainment regulation" } } }, "localname": "Liabilityforestimatedcosttocomplywithentrainmentregulation", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "monetaryItemType" }, "nspm_LineOfCreditFacilityDebtToTotalCapitalizationRatio": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The debt-to-total capitalization ratio for each entity as of the end of the period pursuant to the related financial covenants included in each credit facility agreement.", "label": "Line Of Credit Facility Debt To Total Capitalization Ratio", "terseLabel": "Line Of Credit Facility Debt To Total Capitalization Ratio (as a percent)" } } }, "localname": "LineOfCreditFacilityDebtToTotalCapitalizationRatio", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails" ], "xbrltype": "percentItemType" }, "nspm_LineOfCreditFacilityMaximumAmountCreditFacilityMayBeIncreased": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The maximum amount the credit facility may be increased.", "label": "Line Of Credit Facility Maximum Amount Credit Facility May Be Increased", "terseLabel": "Line Of Credit Facility Maximum Amount Credit Facility May Be Increased" } } }, "localname": "LineOfCreditFacilityMaximumAmountCreditFacilityMayBeIncreased", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_LineOfCreditFacilityMaximumDebtToTotalCapitalizationRatioAllowed": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The maximum debt-to-total capitalization ratio allowed pursuant to the related financial covenants included in each credit facility agreement.", "label": "Line Of Credit Facility Maximum Debt To Total Capitalization Ratio Allowed", "terseLabel": "Line Of Credit Facility Maximum Debt To Total Capitalization Ratio Allowed" } } }, "localname": "LineOfCreditFacilityMaximumDebtToTotalCapitalizationRatioAllowed", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails" ], "xbrltype": "percentItemType" }, "nspm_LineOfCreditFacilityMinimumAmountOfIndebtednessInDefaultToInitiateCrossDefaultProvisions": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The minimum amount of default on certain indebtedness to initiate cross default provisions of the credit facility agreement.", "label": "Line of Credit Facility, Minimum Amount of Indebtedness in Default to Initiate Cross Default Provisions", "terseLabel": "Line of Credit Facility, Minimum Amount of Indebtedness in Default to Initiate Cross Default Provisions" } } }, "localname": "LineOfCreditFacilityMinimumAmountOfIndebtednessInDefaultToInitiateCrossDefaultProvisions", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_LineOfCreditFacilityMinimumThreshholdPercentageOfSubsidiaryAssetsToConsolidatedAssetsRequiredToInitiateCrossDefaultProvisions": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The credit facility has a cross default provision that provides the borrower will be in default on its borrowings under the facility if certain subsidiaries, comprising a minimum percentage of consolidated assets, defaults on certain indebtedness greater than a stated amount.", "label": "Line Of Credit Facility Minimum Threshhold Percentage Of Subsidiary Assets To Consolidated Assets Required To Initiate Cross Default Provisions", "terseLabel": "Line Of Credit Facility Minimum Threshhold Percentage Of Subsidiary Assets To Consolidated Assets Required To Initiate Cross Default Provisions" } } }, "localname": "LineOfCreditFacilityMinimumThreshholdPercentageOfSubsidiaryAssetsToConsolidatedAssetsRequiredToInitiateCrossDefaultProvisions", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails" ], "xbrltype": "percentItemType" }, "nspm_LongDurationFixedIncomeandInterestRateSwapSecuritiesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Investments that provides a return in the form of fixed periodic payments and eventual return of principal at maturity, including treasury strips. Maturity is generally 10 years or more.", "label": "Long-Duration Fixed Income and Interest Rate Swap Securities [Member]", "terseLabel": "Long-duration fixed income and interest rate swap securities" } } }, "localname": "LongDurationFixedIncomeandInterestRateSwapSecuritiesMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "domainItemType" }, "nspm_LongTermBorrowingsandOtherFinancingInstrumentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long-Term Borrowings and Other Financing Instruments [Abstract]", "label": "Long-Term Borrowings and Other Financing Instruments [Abstract]", "terseLabel": "Long-Term Borrowings and Other Financing Instruments [Abstract]" } } }, "localname": "LongTermBorrowingsandOtherFinancingInstrumentsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "xbrltype": "stringItemType" }, "nspm_MaximumAssessmentForBusinessInterruptionInsurance": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The maximum assessments for business interruption insurance per calendar year if losses exceed accumulated reserve funds.", "label": "Maximum Assessment For Business Interruption Insurance", "verboseLabel": "Maximum assessments for business interruption insurance each calendar year" } } }, "localname": "MaximumAssessmentForBusinessInterruptionInsurance", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "nspm_MaximumAssessmentForPropertyDamageInsurance": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The maximum assessment for property damage insurance per calendar year if losses exceed accumulated reserve funds.", "label": "Maximum Assessment For Property Damage Insurance", "verboseLabel": "Maximum assessment for property damage insurance NSP-Minnesota is subject to each calendar year" } } }, "localname": "MaximumAssessmentForPropertyDamageInsurance", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "nspm_MaximumAssessmentsPerReactorPerAccident": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The maximum assessment the company is subject to for each reactor per accident incurred at any licensed nuclear facility within the United States, collected in annual installments.", "label": "Maximum Assessments Per Reactor Per Accident", "verboseLabel": "Maximum assessments per reactor per accident" } } }, "localname": "MaximumAssessmentsPerReactorPerAccident", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "nspm_MaximumFundingRequirementPerReactorForAnyOneYear": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The annual maximum installment payment the company is subject to until either the maximum assessment has been reached or the claim has been met.", "label": "Maximum Funding Requirement Per Reactor For Any One Year", "verboseLabel": "Maximum funding requirement per reactor for any one year" } } }, "localname": "MaximumFundingRequirementPerReactorForAnyOneYear", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "nspm_MaximumNumberOfMonthsFollowingAnnualPeriod": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "maximum number of months following annual period", "label": "maximum number of months following annual period", "terseLabel": "maximum number of months following annual period" } } }, "localname": "MaximumNumberOfMonthsFollowingAnnualPeriod", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_MaximumTotalCapitalization": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The maximum total capitalization allowed for the entity.", "label": "Maximum total capitalization", "terseLabel": "Maximum total capitalization" } } }, "localname": "MaximumTotalCapitalization", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/DividendandOtherCapitalRelatedRestrictionsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_Minimumnumberofplantswhichcouldberequiredtomakeimprovementstoreduceentrainment": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Minimum number of plants which could be required by state regulators to make improvements to reduce entrainment", "label": "Minimum number of plants which could be required to make improvements to reduce entrainment", "terseLabel": "Minimum number of plants which could be required to make improvements to reduce entrainment" } } }, "localname": "Minimumnumberofplantswhichcouldberequiredtomakeimprovementstoreduceentrainment", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "integerItemType" }, "nspm_MoneyPoolMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Arrangement that allows for short-term investments in and borrowings between the utility subsidiaries.", "label": "Money Pool [Member]", "terseLabel": "Money Pool [Member]" } } }, "localname": "MoneyPoolMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_MoneyPoolTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "[Table Text Block] for Money Pool [Table]", "label": "Money Pool [Table Text Block]", "terseLabel": "Money Pool [Table Text Block]" } } }, "localname": "MoneyPoolTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "nspm_MonticelloMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Monticello Nuclear Generating Plant", "label": "Monticello [Member]", "terseLabel": "Monticello [Member]" } } }, "localname": "MonticelloMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "domainItemType" }, "nspm_MunicipalorCooperativeEntitiesorOtherUtilitiesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Municipal or Cooperative Entities or Other Utilities [Member]", "label": "Municipal or Cooperative Entities or Other Utilities [Member]", "terseLabel": "Municipal or Cooperative Entities or Other Utilities" } } }, "localname": "MunicipalorCooperativeEntitiesorOtherUtilitiesMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "domainItemType" }, "nspm_NSPMinnesotaandNSPWisconsinMemberMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "NSP Minnesota and NSP Wisconsin [Member] [Member]", "label": "NSP Minnesota and NSP Wisconsin [Member] [Member]", "terseLabel": "NSP Minnesota and NSP Wisconsin [Member] [Member]" } } }, "localname": "NSPMinnesotaandNSPWisconsinMemberMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "domainItemType" }, "nspm_NSPWisconsinMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "NSP-Wisconsin is an operating utility engaged in the generation, transmission, distribution and sale of electricity in portions of northwestern Wisconsin and in the western portion of the Upper Peninsula of Michigan. NSP-Wisconsin also purchases, transports, distributes and sells natural gas to retail customers and transports customer-owned natural gas in the same service territory.", "label": "NSP-Wisconsin [Member]", "terseLabel": "NSP-Wisconsin" } } }, "localname": "NSPWisconsinMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails", "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "nspm_NaturalGasCommodityContractMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to natural gas commodity prices for cost of natural gas sold and transported as well as electric generation.", "label": "Natural Gas Commodity Contract [Member]", "terseLabel": "Natural Gas Commodity", "verboseLabel": "Natural Gas Commodity Contract" } } }, "localname": "NaturalGasCommodityContractMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "nspm_NaturalGasCommodityMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to natural gas commodity prices.", "label": "Natural Gas Commodity [Member]", "terseLabel": "Natural Gas Commodity" } } }, "localname": "NaturalGasCommodityMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommodityDerivativesDetails" ], "xbrltype": "domainItemType" }, "nspm_NaturalGasPlantGasTransmissionAndDistributionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Asset retirement obligations for natural gas transmission and distribution assets.", "label": "Natural Gas Plant Gas Transmission and Distribution [Member]", "terseLabel": "Natural Gas Plant Gas Transmission and Distribution" } } }, "localname": "NaturalGasPlantGasTransmissionAndDistributionMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "domainItemType" }, "nspm_NaturalGasStorageAndTransportationMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long-term fuel purchase commitment for natural gas storage and transportation.", "label": "Natural Gas Storage and Transportation [Member]", "terseLabel": "Natural Gas Storage and Transportation" } } }, "localname": "NaturalGasStorageAndTransportationMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails" ], "xbrltype": "domainItemType" }, "nspm_NaturalGasSupplyMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long-term fuel purchase commitment for natural gas.", "label": "Natural Gas Supply [Member]", "terseLabel": "Natural Gas Supply" } } }, "localname": "NaturalGasSupplyMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails" ], "xbrltype": "domainItemType" }, "nspm_NetDeferredTaxLiablilityMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Net Deferred Tax Liablility", "label": "Net Deferred Tax Liablility [Member]", "terseLabel": "Net Deferred Tax Liablility [Member]" } } }, "localname": "NetDeferredTaxLiablilityMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "domainItemType" }, "nspm_NetProjectedPostretirementHealthCareBenefitPaymentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Net Projected Postretirement Health Care Benefit Payments Abstract", "verboseLabel": "Expected Medicare Part D Subsidies [Abstract]" } } }, "localname": "NetProjectedPostretirementHealthCareBenefitPaymentsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "stringItemType" }, "nspm_NolAndTaxCreditCarryforwardsTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of net operating loss carryforwards and tax credit carryforwards available to reduce future taxable income, including amounts, expiration dates, limitations on use and the related deferred tax assets and valuation allowances.", "label": "NOL and Tax Credit Carryforwards [Table Text Block]", "terseLabel": "NOL and Tax Credit Carryforwards" } } }, "localname": "NolAndTaxCreditCarryforwardsTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "nspm_NspMinnesotaMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "NSP-Minnesota is an operating utility engaged in the generation, purchase, transmission, distribution and sale of electricity in Minnesota, North Dakota and South Dakota. NSP-Minnesota also purchases, transports, distributes and sells natural gas to retail customers and transports customer-owned natural gas in Minnesota and North Dakota.", "label": "NSP Minnesota [Member]", "terseLabel": "NSP Minnesota [Member]" } } }, "localname": "NspMinnesotaMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "domainItemType" }, "nspm_NuclearDecommissioningAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Nuclear Decommissioning [Abstract]", "terseLabel": "Nuclear Decommissioning [Abstract]" } } }, "localname": "NuclearDecommissioningAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "nspm_NuclearDecommissioningExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of nuclear decommissioning expense reported as depreciation expense.", "label": "Nuclear Decommissioning Expense", "terseLabel": "Nuclear Decommissioning Expense" } } }, "localname": "NuclearDecommissioningExpense", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_NuclearDecommissioningExpensesRecognizedAsResultOfRegulationTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of nuclear decommissioning expense reported as depreciation expense.", "label": "Nuclear Decommissioning Expenses Recognized as Result of Regulation [Table Text Block]", "verboseLabel": "Nuclear Decommissioning Expenses Recognized as Result of Regulation" } } }, "localname": "NuclearDecommissioningExpensesRecognizedAsResultOfRegulationTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "nspm_NuclearDecommissioningFundMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Nuclear Decommissioning Fund [Member]", "label": "Nuclear Decommissioning Fund [Member]", "terseLabel": "Nuclear Decommissioning Fund [Member]" } } }, "localname": "NuclearDecommissioningFundMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "domainItemType" }, "nspm_NuclearFuelAmortization": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The expense charged against earnings for the periodic recognition of costs previously incurred before nuclear fuel is fabricated and loaded.", "label": "Nuclear Fuel Amortization", "verboseLabel": "Nuclear fuel amortization" } } }, "localname": "NuclearFuelAmortization", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "nspm_NuclearFuelPurchaseCommitmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long-term fuel purchase commitment for nuclear fuel.", "label": "Nuclear Fuel Purchase Commitment [Member]", "terseLabel": "Nuclear Fuel" } } }, "localname": "NuclearFuelPurchaseCommitmentMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails" ], "xbrltype": "domainItemType" }, "nspm_NuclearInsuranceAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Nuclear Insurance [Abstract]", "terseLabel": "Nuclear Insurance [Abstract]" } } }, "localname": "NuclearInsuranceAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "stringItemType" }, "nspm_NuclearInsuranceCoverageExposureFundedBySecondaryFinancialProtectionProgram": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of coverage secured for the public liability exposure thru the Secondary Financial Protection Program, available from assessments by the federal government in case of a nuclear accident.", "label": "Nuclear Insurance Coverage Exposure Funded By Secondary Financial Protection Program", "verboseLabel": "Nuclear insurance coverage exposure funded by the Secondary Financial Protection Program" } } }, "localname": "NuclearInsuranceCoverageExposureFundedBySecondaryFinancialProtectionProgram", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "nspm_NuclearInsuranceCoverageSecuredForPublicLiabilityExposure": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of coverage secured for the public liability exposure thru a pool of insurance companies.", "label": "Nuclear Insurance Coverage Secured For Public Liability Exposure", "verboseLabel": "Nuclear insurance coverage secured for the Company's public liability exposure" } } }, "localname": "NuclearInsuranceCoverageSecuredForPublicLiabilityExposure", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "nspm_NuclearPlantAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Nuclear Plant [Axis]", "label": "Nuclear Plant [Axis]", "terseLabel": "Nuclear Plant [Axis]" } } }, "localname": "NuclearPlantAxis", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "stringItemType" }, "nspm_NuclearPlantDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "[Domain] for Nuclear Plant [Axis]", "label": "Nuclear Plant [Domain]", "terseLabel": "Nuclear Plant [Domain]" } } }, "localname": "NuclearPlantDomain", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "domainItemType" }, "nspm_NuclearRefuelingOutageCostsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Costs of routine nuclear refueling outages deferred as a regulatory asset and amortized over the expected period between outages (generally 18-24 months). The regulatory liability represents excess revenue collections for nuclear outage costs, over the amount of amortized nuclear outage costs. This deferred accounting treatment is effective for the transition period resulting from the change in accounting.", "label": "Nuclear Refueling Outage Costs [Member]", "terseLabel": "Nuclear Refueling Outage Costs" } } }, "localname": "NuclearRefuelingOutageCostsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_NumberOfAdditionalPeriodsRevolvingTerminationDateCanBeExtendedSubjectToMajorityBankGroupApproval": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of additional periods the revolving termination date on the credit facility can be extended, subject to majority bank group approval.", "label": "Number Of Additional Periods Revolving Termination Date Can Be Extended Subject To Majority Bank Group Approval", "terseLabel": "Number Of Additional Periods Revolving Termination Date Can Be Extended Subject To Majority Bank Group Approval" } } }, "localname": "NumberOfAdditionalPeriodsRevolvingTerminationDateCanBeExtendedSubjectToMajorityBankGroupApproval", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails" ], "xbrltype": "integerItemType" }, "nspm_NumberOfAuthorizedCanistersFilledAndPlacedInDryCaskNuclearStorageFacility": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of canisters authorized by the Minnesota Public Utility Commission that have been filled and placed in the Monticello dry-cask nuclear storage facility.", "label": "Number Of Authorized Canisters Filled And Placed In Dry Cask Nuclear Storage Facility", "terseLabel": "Number Of Authorized Canisters Filled And Placed In Dry Cask Nuclear Storage Facility" } } }, "localname": "NumberOfAuthorizedCanistersFilledAndPlacedInDryCaskNuclearStorageFacility", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails" ], "xbrltype": "integerItemType" }, "nspm_NumberOfAuthorizedCanistersInDryCaskNuclearStorageFacility": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of canisters authorized by the Minnesota Public Utility Commission to be placed in the Monticello dry-cask nuclear storage facility.", "label": "Number Of Authorized Canisters In Dry Cask Nuclear Storage Facility", "terseLabel": "Number Of Authorized Canisters In Dry Cask Nuclear Storage Facility" } } }, "localname": "NumberOfAuthorizedCanistersInDryCaskNuclearStorageFacility", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails" ], "xbrltype": "integerItemType" }, "nspm_NumberOfNuclearPlantSites": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The number of nuclear plant sites operated by the entity.", "label": "Number Of Nuclear Plant Sites", "verboseLabel": "Number of nuclear plant sites operated by NSP-Minnesota" } } }, "localname": "NumberOfNuclearPlantSites", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "integerItemType" }, "nspm_NumberOfOwnedAndLicensedReactors": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The number of owned and licensed reactors.", "label": "Number of owned and licensed reactors", "terseLabel": "Number of owned and licensed reactors" } } }, "localname": "NumberOfOwnedAndLicensedReactors", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "integerItemType" }, "nspm_NumberofidentifiedMGPlandfillordisposalsitesundercurrentinvestigationandorremediation": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "", "label": "Number of identified MGP, landfill, or disposal sites under current investigation and/or remediation", "terseLabel": "Number of identified MGP, landfill, or disposal sites under current investigation and/or remediation" } } }, "localname": "NumberofidentifiedMGPlandfillordisposalsitesundercurrentinvestigationandorremediation", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMGPSitesDetails" ], "xbrltype": "integerItemType" }, "nspm_Numberofimpoundmentswhereclosureplanswillbeexpedited": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of impoundments where closure plans will be expedited", "label": "Number of impoundments where closure plans will be expedited", "terseLabel": "Number of impoundments where closure plans will be expedited" } } }, "localname": "Numberofimpoundmentswhereclosureplanswillbeexpedited", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "integerItemType" }, "nspm_Numberofmostsignificantcounterpartiesforwholesaletradingandnontradingcommodityactivitieswithcreditexposure": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of the entity's most significant counterparties for wholesale, trading and non-trading commodity activities with credit exposure.", "label": "Number of most significant counterparties for wholesale, trading and non-trading commodity activities with credit exposure", "terseLabel": "Number of most significant counterparties" } } }, "localname": "Numberofmostsignificantcounterpartiesforwholesaletradingandnontradingcommodityactivitieswithcreditexposure", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "integerItemType" }, "nspm_Numberofregulatedashunitsthatwillstillbeinoperationbytheendof2019": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of regulated ash units that will still be in operation by the end of 2019", "label": "Number of regulated ash units that will still be in operation by the end of 2019", "terseLabel": "Number of regulated ash units that will still be in operation by the end of 2019" } } }, "localname": "Numberofregulatedashunitsthatwillstillbeinoperationbytheendof2019", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "integerItemType" }, "nspm_Numberofsiteswherestatisticallysignificantincreasesoverestablishedgroundwaterstandardsexist": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of sites where statistically significant increases over established groundwater standards exist", "label": "Number of sites where statistically significant increases over established groundwater standards exist", "terseLabel": "Number of sites where statistically significant increases over established groundwater standards exist" } } }, "localname": "Numberofsiteswherestatisticallysignificantincreasesoverestablishedgroundwaterstandardsexist", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "integerItemType" }, "nspm_OperatingLeaseAssets": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Operating Lease Assets", "label": "Operating Lease Assets", "terseLabel": "Operating lease assets" } } }, "localname": "OperatingLeaseAssets", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_OperatingLeaseAssetsandLiabilitiesLesseeAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Operating Lease, Assets and Liabilities, Lessee [Abstract]", "label": "Operating Lease, Assets and Liabilities, Lessee [Abstract]", "terseLabel": "Operating Lease, Assets and Liabilities, Lessee [Abstract]" } } }, "localname": "OperatingLeaseAssetsandLiabilitiesLesseeAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "stringItemType" }, "nspm_OperatingLeaseRightofUseAssetAccumulatedDepreciation": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Operating Lease, Right-of-Use Asset, Accumulated Depreciation", "label": "Operating Lease, Right-of-Use Asset, Accumulated Depreciation", "negatedTerseLabel": "Operating Lease, Right-of-Use Asset, Accumulated Depreciation" } } }, "localname": "OperatingLeaseRightofUseAssetAccumulatedDepreciation", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_OperatingLeaseRightofUseAssetGross": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Operating Lease, Right-of-Use Asset, Gross", "label": "Operating Lease, Right-of-Use Asset, Gross", "terseLabel": "Operating Lease, Right-of-Use Asset, Gross" } } }, "localname": "OperatingLeaseRightofUseAssetGross", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_OperatingandMaintenanceCostsNotIncludedforGAAP": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Operating and Maintenance Costs Not Included for GAAP", "label": "Operating and Maintenance Costs Not Included for GAAP", "terseLabel": "Operating and Maintenance Costs Not Included for GAAP" } } }, "localname": "OperatingandMaintenanceCostsNotIncludedforGAAP", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "nspm_OtherAssetsExcludingPropertyPlantAndEquipment": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 1.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets, excluding net property, plant and equipment, that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.", "label": "Other Assets, Excluding Property, Plant and Equipment", "totalLabel": "Total other assets" } } }, "localname": "OtherAssetsExcludingPropertyPlantAndEquipment", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "nspm_OtherCustomersMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Other Customers [Member]", "label": "Other Customers [Member]", "terseLabel": "Other" } } }, "localname": "OtherCustomersMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_OtherEmployeeBenefits": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "other employee benefits", "label": "other employee benefits", "terseLabel": "Other employee benefits" } } }, "localname": "OtherEmployeeBenefits", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_OtherMGPLandfillorDisposalSitesDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Other MGP, Landfill, or Disposal Sites [Domain]", "terseLabel": "Other MGP, Landfill, or Disposal Sites [Domain]" } } }, "localname": "OtherMGPLandfillorDisposalSitesDomain", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMGPSitesDetails" ], "xbrltype": "domainItemType" }, "nspm_OtherRegulatoryAssetsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Other costs, which would otherwise be charged to expense, that are deferred as regulatory assets based on the expected ability to recover them in future rates.", "label": "Other Regulatory Assets [Member]", "terseLabel": "Other" } } }, "localname": "OtherRegulatoryAssetsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_OtherRegulatoryLiabilitiesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Other costs, which would otherwise be reflected as income, that are deferred as regulatory liabilities based on the expectation they will be refunded to customers through the ratemaking process.", "label": "Other Regulatory Liabilities [Member]", "terseLabel": "Other Regulatory Liabilities" } } }, "localname": "OtherRegulatoryLiabilitiesMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "nspm_OtherServicesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Other Services [Member]", "label": "Other Services [Member]", "terseLabel": "Other" } } }, "localname": "OtherServicesMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_PayableForInterestRelatedToUnrecognizedTaxBenefits": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Payable for interest related to unrecognized tax benefits", "label": "Payable for interest related to unrecognized tax benefits", "terseLabel": "Payable for interest related to unrecognized tax benefits at Jan. 1" } } }, "localname": "PayableForInterestRelatedToUnrecognizedTaxBenefits", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "nspm_PensionAndRetireeMedicalObligationsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Discloses the amount of regulatory asset arising from the difference between net periodic pension or other postemployment benefit cost, according to US GAAP, and the amount of pension or other postemployment benefit cost considered for rate-making purposes, according the actions of the regulator.", "label": "Pension and Retiree Medical Obligations [Member]", "terseLabel": "Pension and Retiree Medical Obligations" } } }, "localname": "PensionAndRetireeMedicalObligationsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_PensionBenefitsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Pension Benefits Abstract", "verboseLabel": "Pension Benefits [Abstract]" } } }, "localname": "PensionBenefitsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails" ], "xbrltype": "stringItemType" }, "nspm_PercentageOfTotalObligationForDecommissioningExpectedToBeFundedByExternalFunds": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage of total obligation for decommissioning nuclear facilities expected to be funded by external decommissioning trust fund.", "label": "Percentage Of Total Obligation For Decommissioning Expected To Be Funded By External Funds", "terseLabel": "Percentage Of Total Obligation For Decommissioning Expected To Be Funded By External Funds" } } }, "localname": "PercentageOfTotalObligationForDecommissioningExpectedToBeFundedByExternalFunds", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "percentItemType" }, "nspm_PercentageOfWholesaleTradingAndNonTradingCommodityCreditExposureForMostSignificantCounterparties": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage of wholesale, trading and non-trading commodity credit exposure for the entity's most significant counterparties.", "label": "Percentage of wholesale, trading and non trading commodity credit exposure for the most significant counterparties", "terseLabel": "Percentage of credit exposure for the most significant counterparties" } } }, "localname": "PercentageOfWholesaleTradingAndNonTradingCommodityCreditExposureForMostSignificantCounterparties", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "percentItemType" }, "nspm_PlanAmendments": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Plan Amendments", "label": "Plan Amendments", "terseLabel": "Plan Amendments" } } }, "localname": "PlanAmendments", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_PlanAssetsMeasuredAtFairValueForEachOfFairValueHierarchyLevelsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Plan Assets Measured at Fair Value for Each of the Fair Value Hierarchy Levels [Abstract]", "terseLabel": "Plan Assets Measured at Fair Value for Each of the Fair Value Hierarchy Levels [Abstract]" } } }, "localname": "PlanAssetsMeasuredAtFairValueForEachOfFairValueHierarchyLevelsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails" ], "xbrltype": "stringItemType" }, "nspm_PlantRemovalCostsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Costs provided for the retirement of certain long-lived assets that are reasonably expected to be recovered in rates charged to customers. Regulatory liability is recognized for differences in the timing of recognition of the period costs for financial reporting and rate-making purposes.", "label": "Plant Removal Costs [Member]", "terseLabel": "Plant Removal Costs" } } }, "localname": "PlantRemovalCostsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "nspm_PlantToBeRetiredMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Plant assets that are pending retirement.", "label": "Plant to be Retired [Member]", "terseLabel": "Plant to be Retired [Member]" } } }, "localname": "PlantToBeRetiredMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "domainItemType" }, "nspm_PostretirementHealthCareBenefitsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Postretirement Health Care Benefits Abstract", "verboseLabel": "Postretirement Health Care Benefits [Abstract]" } } }, "localname": "PostretirementHealthCareBenefitsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "stringItemType" }, "nspm_PotentialFederalTaxAdjustments": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Potential Federal Tax Adjustments", "label": "Potential Federal Tax Adjustments", "terseLabel": "Potential Federal Tax Adjustments" } } }, "localname": "PotentialFederalTaxAdjustments", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/StateAudits" ], "xbrltype": "monetaryItemType" }, "nspm_PrairieIslandMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Prairie Island Nuclear Generating Plant", "label": "Prairie Island [Member]", "terseLabel": "Prairie Island [Member]" } } }, "localname": "PrairieIslandMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "domainItemType" }, "nspm_PrairieIslandNuclearPlantExtendedPowerUprateMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "An extended power uprate (EPU) at the Prairie Island nuclear generating plant filed with the public utility's regulatory body.", "label": "Prairie Island Nuclear Plant Extended Power Uprate [Member]", "verboseLabel": "PI extended power update" } } }, "localname": "PrairieIslandNuclearPlantExtendedPowerUprateMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_Pretaxgainslossesreclassifiedintoincomeduringtheperiodfromregulatoryassetsandliabilities": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Pre-tax gains (losses) reclassified into income during the period from regulatory assets and (liabilities)", "label": "Pre-tax gains (losses) reclassified into income during the period from regulatory assets and (liabilities)", "negatedLabel": "Pre-tax gains (losses) reclassified into income during the period from regulatory assets and (liabilities)" } } }, "localname": "Pretaxgainslossesreclassifiedintoincomeduringtheperiodfromregulatoryassetsandliabilities", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_PscoMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "PSCo is an operating utility engaged primarily in the generation, purchase, transmission, distribution and sale of electricity in Colorado. PSCo also purchases, transports, distributes and sells natural gas to retail customers and transports customer-owned natural gas in Colorado.", "label": "PSCo [Member]", "terseLabel": "PSCo" } } }, "localname": "PscoMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "nspm_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfDebt": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 2.0, "parentTag": "us-gaap_InterestAndDebtExpense", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The component of the allowance for funds used during construction during the period based on an assumed rate of return on debt capital used in financing the construction of regulated assets.", "label": "Public Utilities, Allowance For Funds Used During Construction, Capitalized Cost Of Debt", "negatedTerseLabel": "Allowance for funds used during construction \u2014 debt" } } }, "localname": "PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfDebt", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "nspm_PublicUtilitiesBaseReturnOnEquityChargedToCustomersThroughTransmissionFormulaRates": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage of public utility's requested base return on equity charged to customers through transmission formula rates filed with regulatory agency.", "label": "Public Utilities, Base Return On Equity Charged To Customers Through Transmission Formula Rates", "terseLabel": "Public Utilities, Base Return On Equity Charged To Customers Through Transmission Formula Rates" } } }, "localname": "PublicUtilitiesBaseReturnOnEquityChargedToCustomersThroughTransmissionFormulaRates", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "percentItemType" }, "nspm_PublicUtilitiesPropertyPlantAndEquipmentDecommissioningObligationsPolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for the utility's legal obligations to perform retirement activities and associated long-lived assets, a reconciliation of the beginning and ending aggregate carrying amount of asset retirement obligations and the accounting. The disclosure may include retirement obligation, regulatory authorities, recent activities, cost recoveries expected, trust funding and assets, accounting, and assets and liabilities associated with decommissioning.", "label": "Public Utilities Property Plant And Equipment Decommissioning Obligations [Policy Text Block]", "terseLabel": "Nuclear Decommissioning" } } }, "localname": "PublicUtilitiesPropertyPlantAndEquipmentDecommissioningObligationsPolicyTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "nspm_PublicUtilitiesROEApplicableToTransmissionFormulaRatesInTheMISORegionApproved": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, Approved", "label": "Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, Approved", "terseLabel": "Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, Approved" } } }, "localname": "PublicUtilitiesROEApplicableToTransmissionFormulaRatesInTheMISORegionApproved", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "percentItemType" }, "nspm_PublicUtilitiesROEApplicableToTransmissionFormulaRatesInTheMISORegionRecommendedByThirdParties": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Public Utilities, ROE Applicable To Transmission Formula Rates In The Mid-continent Independent Service Operator (MISO) Region, Recommended By Third Parties", "label": "Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, Recommended By Third Parties", "terseLabel": "Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, Recommended By Third Parties" } } }, "localname": "PublicUtilitiesROEApplicableToTransmissionFormulaRatesInTheMISORegionRecommendedByThirdParties", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "percentItemType" }, "nspm_PublicUtilitiesROENewBaseComplaintNumber1": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Public Utilities, ROE New Base, Complaint Number 1", "label": "Public Utilities, ROE New Base, Complaint Number 1", "terseLabel": "Public Utilities, ROE New Base, Complaint Number 1" } } }, "localname": "PublicUtilitiesROENewBaseComplaintNumber1", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails" ], "xbrltype": "percentItemType" }, "nspm_PurchasedPowerAgreementsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Purchased Power Agreements [Abstract]", "terseLabel": "Purchased Power Agreements [Abstract]" } } }, "localname": "PurchasedPowerAgreementsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesVariableInterestEntitiesDetails" ], "xbrltype": "stringItemType" }, "nspm_PurchasedPowerAgreementsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Purchased Power Agreements [Member]", "label": "Purchased Power Agreements [Member]", "terseLabel": "Purchased Power Agreements", "verboseLabel": "Purchased Power Agreements" } } }, "localname": "PurchasedPowerAgreementsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_PurchasedPowerContractsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Purchased Power Contracts [Abstract]", "verboseLabel": "Purchased Power Agreements (PPAs) [Abstract]" } } }, "localname": "PurchasedPowerContractsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "stringItemType" }, "nspm_PurchasedPowerMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Purchased Power [Member]", "label": "Purchased Power [Member]", "terseLabel": "Purchased Power" } } }, "localname": "PurchasedPowerMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "nspm_RabbiTrustMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Rabbi Trust", "label": "Rabbi Trust [Member]", "terseLabel": "Rabbi Trust [Member]" } } }, "localname": "RabbiTrustMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "nspm_RabbiTrustSecuritiesAmortizedCostandFairValueMeasuredonRecurrringBasisTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the amortized cost of assets held in rabbi trust. Also includes the fair value of these assets measured on a recurring basis in their entirety and the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Rabbi Trust Securities Amortized Cost and Fair Value Measured on Recurrring Basis [Table Text Block]", "terseLabel": "Rabbi Trust Securities Amortized Cost and Fair Value Measured on Recurrring Basis [Table Text Block]" } } }, "localname": "RabbiTrustSecuritiesAmortizedCostandFairValueMeasuredonRecurrringBasisTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "nspm_ReconciliationOfDiscountedDecommissioningCostObligationRegulatedBasisToTheARORecordfedInTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Reconciliation of discounted decommissioning cost obligation - regulated basis to the ARO recordfed in", "label": "Reconciliation of discounted decommissioning cost obligation - regulated basis to the ARO recordfed in [Table Text Block]", "terseLabel": "Reconciliation of discounted decommissioning cost obligation - regulated basis to the ARO recordfed in" } } }, "localname": "ReconciliationOfDiscountedDecommissioningCostObligationRegulatedBasisToTheARORecordfedInTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "nspm_RecoverableDeferredTaxesOnAfudcRecordedInPlantMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Represents the amount of rate recovery related to deferred taxes for AFUDC (Allowance for Funds Used During Construction) equity, which occurs when an entity capitalizes, as part of plant and equipment, the cost of financing construction partially by equity.", "label": "Recoverable Deferred Taxes on AFUDC Recorded in Plant [Member]", "terseLabel": "Recoverable Deferred Taxes on AFUDC Recorded in Plant" } } }, "localname": "RecoverableDeferredTaxesOnAfudcRecordedInPlantMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_RegulatedElectricMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The core operations of the regulated electric utility segment consists of the generation, transmission, and distribution of electricity. In addition, this segment includes sales for resale and provides wholesale transmission service to other entities.", "label": "Regulated Electric [Member]", "terseLabel": "Regulated Electric" } } }, "localname": "RegulatedElectricMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_RegulatedElectricitySegmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Regulated Electricity Segment", "label": "Regulated Electricity Segment [Member]", "terseLabel": "Regulated Electricity" } } }, "localname": "RegulatedElectricitySegmentMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "domainItemType" }, "nspm_RegulatedNaturalGasMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The operations of the regulated natural gas utility segment consists of the transporting, storing, and distributing natural gas in certain markets serviced by the entity.", "label": "Regulated Natural Gas [Member]", "terseLabel": "Regulated Natural Gas" } } }, "localname": "RegulatedNaturalGasMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_RegulatedNaturalGasSegmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Regulated Natural Gas Segment", "label": "Regulated Natural Gas Segment [Member]", "terseLabel": "Regulated Natural Gas" } } }, "localname": "RegulatedNaturalGasSegmentMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "domainItemType" }, "nspm_RegulatedOperatingRevenueElectric": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Regulated Operating Revenue, Electric", "label": "Regulated Operating Revenue, Electric", "terseLabel": "Operating revenue, Regulated Electric" } } }, "localname": "RegulatedOperatingRevenueElectric", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "nspm_RegulatedOperatingRevenueElectricAffiliate": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 1.0, "parentTag": "us-gaap_RegulatedAndUnregulatedOperatingRevenue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Regulated Operating Revenue, Electric, Affiliate", "label": "Regulated Operating Revenue, Electric, Affiliate", "terseLabel": "Electric, affiliates" } } }, "localname": "RegulatedOperatingRevenueElectricAffiliate", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "nspm_RegulatedOperatingRevenueElectricNonaffiliate": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 4.0, "parentTag": "us-gaap_RegulatedAndUnregulatedOperatingRevenue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Regulated Operating Revenue, Electric, Non-affiliate", "label": "Regulated Operating Revenue, Electric, Non-affiliate", "terseLabel": "Electric, non-affiliates" } } }, "localname": "RegulatedOperatingRevenueElectricNonaffiliate", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "nspm_RelatedPartyTransactionElectricDomesticRegulatedRevenue": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Revenue derived from the regulated (by a federal, state, or local government or agency) generation, transmission and distribution of electricity and natural gas earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.", "label": "Related Party Transaction - Electric Domestic Regulated Revenue", "terseLabel": "Related Party Transaction - Electric Domestic Regulated Revenue" } } }, "localname": "RelatedPartyTransactionElectricDomesticRegulatedRevenue", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "nspm_RelatedPartyTransactionGasDomesticRegulatedRevenue": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Revenue derived from the regulated generation, transmission and distribution of natural gas earned from transactions between subsidiaries of a common parent.", "label": "Related Party Transaction - Gas Domestic Regulated Revenue", "terseLabel": "Related Party Transaction - Gas Domestic Regulated Revenue" } } }, "localname": "RelatedPartyTransactionGasDomesticRegulatedRevenue", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "nspm_RenewableEnergyCreditsPolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Describes the accounting and regulatory policies for renewable energy credits.", "label": "Renewable Energy Credits [Policy Text Block]", "terseLabel": "Renewable Energy Credits" } } }, "localname": "RenewableEnergyCreditsPolicyTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "nspm_RenewableResourcesAndEnvironmentalInitiativesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Government mandated renewable energy and environmental costs which are deferred as regulatory assets due to the probability that the costs will be recovered from customers in future rates or amounts collected from customers through rate recovery mechanisms intended to recover the costs of renewable resources and environmental initiatives which are deferred as a regulatory liability until costs are incurred.", "label": "Renewable Resources and Environmental Initiatives [Member]", "terseLabel": "Renewable Resources and Environmental Initiatives" } } }, "localname": "RenewableResourcesAndEnvironmentalInitiativesMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "nspm_RepaymentsFromUtilityMoneyPoolArrangement": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Repayments received during the reporting period of amounts previously invested into the utility money pool borrowing arrangement among approved affiliates.", "label": "Repayments From Utility Money Pool Arrangement", "verboseLabel": "Repayments from utility money pool arrangement" } } }, "localname": "RepaymentsFromUtilityMoneyPoolArrangement", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "nspm_RepaymentsUnderUtilityMoneyPoolArrangement": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Repayments of amounts during the reporting period previously borrowed from the utility money pool borrowing arrangement among approved affiliates.", "label": "Repayments Under Utility Money Pool Arrangement", "negatedLabel": "Repayments under utility money pool arrangement" } } }, "localname": "RepaymentsUnderUtilityMoneyPoolArrangement", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "nspm_ResidentialCustomersMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Residential Customers [Member]", "label": "Residential Customers [Member]", "terseLabel": "Residential" } } }, "localname": "ResidentialCustomersMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_RetailDistributionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Retail Distribution [Member]", "label": "Retail Distribution [Member]", "terseLabel": "Retail" } } }, "localname": "RetailDistributionMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_RevenuesIncludingIntersegmentRevenues": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Revenues Including Intersegment Revenues", "label": "Revenues Including Intersegment Revenues", "terseLabel": "Revenues Including Intersegment Revenues" } } }, "localname": "RevenuesIncludingIntersegmentRevenues", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "nspm_SalesTrueUpandRevenueDecouplingMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Sales True Up and Revenue Decoupling [Member]", "label": "Sales True Up and Revenue Decoupling [Member]", "terseLabel": "Sales True-Up and Revenue Decoupling" } } }, "localname": "SalesTrueUpandRevenueDecouplingMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_ScheduleOfDebtToTotalCapitalizationRatioTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the entity and each of its subsidiaries' compliance with the debt covenant ratio terms per the credit agreement as of the balance sheet date presented.", "label": "Schedule Of Debt To Total Capitalization Ratio [Table Text Block]", "terseLabel": "Schedule of Debt To Total Capitalization Ratio" } } }, "localname": "ScheduleOfDebtToTotalCapitalizationRatioTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "nspm_SeriesDueApril12031Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due April 1, 2031", "label": "Series Due April 1, 2031 [Member]", "terseLabel": "Series Due April 1, 2031" } } }, "localname": "SeriesDueApril12031Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueApril12052Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due April 1, 2052", "label": "Series Due April 1, 2052 [Member]", "terseLabel": "Series Due April 1, 2052" } } }, "localname": "SeriesDueApril12052Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueAug.152022Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due Aug. 15, 2022", "label": "Series Due Aug. 15, 2022 [Member]", "terseLabel": "Series Due Aug. 15, 2022 [Member]" } } }, "localname": "SeriesDueAug.152022Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueAug.152040Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due Aug. 15, 2040", "label": "Series Due Aug. 15, 2040 [Member]", "terseLabel": "Series Due Aug. 15, 2040 [Member]" } } }, "localname": "SeriesDueAug.152040Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueAug.152042Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due Aug. 15, 2042", "label": "Series Due Aug. 15, 2042 [Member]", "terseLabel": "Series Due Aug. 15, 2042 [Member]" } } }, "localname": "SeriesDueAug.152042Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueAug.152045Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due Aug. 15, 2045", "label": "Series Due Aug. 15, 2045 [Member]", "terseLabel": "Series Due Aug. 15, 2045 [Member]" } } }, "localname": "SeriesDueAug.152045Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueJuly12025Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due July 1, 2025", "label": "Series Due July 1, 2025 [Member]", "terseLabel": "Series Due July 1, 2025 [Member]" } } }, "localname": "SeriesDueJuly12025Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueJuly12037Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due July 1, 2037", "label": "Series Due July 1, 2037 [Member]", "terseLabel": "Series Due July 1, 2037 [Member]" } } }, "localname": "SeriesDueJuly12037Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueJuly1520352Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due July 15, 2035 2", "label": "Series Due July 15, 2035 2 [Member]", "terseLabel": "Series Due July 15, 2035 [Domain]" } } }, "localname": "SeriesDueJuly1520352Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueJune120362Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due June 1, 2036 2", "label": "Series Due June 1, 2036 2 [Member]", "terseLabel": "Series Due June 1, 2036 [Domain]" } } }, "localname": "SeriesDueJune120362Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueJune12051Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due June 1, 2051", "label": "Series Due June 1, 2051 [Member]", "terseLabel": "Series Due June 1, 2051 [Member]" } } }, "localname": "SeriesDueJune12051Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueMarch12028Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due March 1, 2028", "label": "Series Due March 1, 2028 [Member]", "terseLabel": "Series Due March 1, 2028 [Member]" } } }, "localname": "SeriesDueMarch12028Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueMarch120502Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due March 1, 2050 [Domain]", "label": "Series Due March 1, 2050 2 [Member]", "terseLabel": "Series Due March 1, 2050 [Domain]" } } }, "localname": "SeriesDueMarch120502Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueMay152023Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due May 15, 2023", "label": "Series Due May 15, 2023 [Member]", "terseLabel": "Series Due May 15, 2023 [Member]" } } }, "localname": "SeriesDueMay152023Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueMay152044Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due May 15, 2044", "label": "Series Due May 15, 2044 [Member]", "terseLabel": "Series Due May 15, 2044 [Member]" } } }, "localname": "SeriesDueMay152044Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueMay152046Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due May 15, 2046", "label": "Series Due May 15, 2046 [Member]", "terseLabel": "Series Due May 15, 2046 [Member]" } } }, "localname": "SeriesDueMay152046Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueNov.12039Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due Nov. 1, 2039", "label": "Series Due Nov. 1, 2039 [Member]", "terseLabel": "Series Due Nov. 1, 2039 [Member]" } } }, "localname": "SeriesDueNov.12039Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_SeriesDueSept.152047Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series Due Sept. 15, 2047 [Member]", "label": "Series Due Sept. 15, 2047 [Member]", "terseLabel": "Series Due Sept. 15, 2047 [Member]" } } }, "localname": "SeriesDueSept.152047Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "nspm_ShercoCommonFacilitiesUnits12And3Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Supporting Sherco Unit 3 are commonly used facilities for the three coal-fired units at the Sherburne County site.", "label": "Sherco Common Facilities Units 1, 2 and 3 [Member]", "terseLabel": "Sherco Common Facilities Units 1, 2 and 3" } } }, "localname": "ShercoCommonFacilitiesUnits12And3Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "nspm_ShercoSubstationMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The Sherco substation is a subsidiary station of an electricity generation, transmission and distribution system where voltage is transformed from high to low or the reverse using transformers.", "label": "Sherco Substation [Member]", "terseLabel": "Sherco Substation" } } }, "localname": "ShercoSubstationMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "nspm_ShercoUnit3Member": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Sherco Unit 3 is one of three coal-fired units at the Sherburne County site and is a 860 megawatt plant.", "label": "Sherco Unit 3 [Member]", "terseLabel": "Sherco Unit 3" } } }, "localname": "ShercoUnit3Member", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "nspm_ShorttointermediatefixedincomesecuritiesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Investment that provides a return in the form of fixed periodic payments and eventual return of principal at maturity. Generally, maturity is less than 10 years.", "label": "Short-to-intermediate fixed income securities [Member]", "terseLabel": "Short-to-intermediate fixed income securities" } } }, "localname": "ShorttointermediatefixedincomesecuritiesMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "domainItemType" }, "nspm_SignificantAffiliateTransactionsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "-- None. No documentation exists for this element. --", "label": "Significant Affiliate Transactions [Abstract]", "terseLabel": "Significant Affiliate Transactions [Abstract]" } } }, "localname": "SignificantAffiliateTransactionsAbstract", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "nspm_SpsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "SPS is an operating utility engaged primarily in the generation, purchase, transmission, distribution and sale of electricity in portions of Texas and New Mexico.", "label": "SPS [Member]", "terseLabel": "SPS" } } }, "localname": "SpsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "nspm_StateCommissionAdjustmentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "State commission adjustments, which would otherwise be charged to expense, deferred as regulatory assets based on the expected ability to recover the expense in future rates.", "label": "State Commission Adjustments [Member]", "terseLabel": "State Commission Adjustments" } } }, "localname": "StateCommissionAdjustmentsMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "nspm_StateTaxCreditCarryforwardNetOfFederalDetirment": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "state tax credit carryforward, net of federal detirment", "label": "state tax credit carryforward, net of federal detirment", "terseLabel": "State tax credit carryforwards, net of federal detriment (a)" } } }, "localname": "StateTaxCreditCarryforwardNetOfFederalDetirment", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_StudiesTimeframe": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Studies timeframe", "label": "Studies timeframe", "terseLabel": "Studies timeframe" } } }, "localname": "StudiesTimeframe", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_SummaryofStatuteofLimitationsApplicabletoOpenTaxYearsTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Summary of Statute of Limitations Applicable to Open Tax Years [Table Text Block]", "label": "Summary of Statute of Limitations Applicable to Open Tax Years [Table Text Block]", "terseLabel": "Summary of Statute of Limitations Applicable to Open Tax Years [Table Text Block]" } } }, "localname": "SummaryofStatuteofLimitationsApplicabletoOpenTaxYearsTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "nspm_TaxBenefitsAssociatedWithNetOperatingLossNolAndTaxCreditCarryforwardsTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the tax benefits associated with net operating loss (NOL) and tax credit carryforwards.", "label": "Tax Benefits Associated with Net Operating Loss (NOL) and Tax Credit Carryforwards [Table Text Block]", "terseLabel": "Tax Benefits Associated with NOL and Tax Credit Carryforwards" } } }, "localname": "TaxBenefitsAssociatedWithNetOperatingLossNolAndTaxCreditCarryforwardsTableTextBlock", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "nspm_TaxBenefitsAssociatedWithNolAndTaxCreditCarryforwards": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Tax benefits associated with NOL and tax credit carryforwards that reduce unrecognized tax benefits.", "label": "Tax Benefits Associated With Nol And Tax Credit Carryforwards", "negatedTerseLabel": "NOL and tax credit carryforwards" } } }, "localname": "TaxBenefitsAssociatedWithNolAndTaxCreditCarryforwards", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "nspm_TransmissionExpenseMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Transmission Expense [Member]", "label": "Transmission Expense [Member]", "terseLabel": "Transmission Expense" } } }, "localname": "TransmissionExpenseMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "nspm_TransmissionServicesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Transmission Services [Member]", "label": "Transmission Services [Member]", "terseLabel": "Transmission" } } }, "localname": "TransmissionServicesMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_UnrecognizedTaxBenefitsThatWouldNotImpactEffectiveTaxRate": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The total amount of unrecognized tax benefits for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility and, if recognized, would not affect the effective tax rate but would accelerate the payment of cash to the taxing authority to an earlier period.", "label": "Unrecognized Tax Benefits That Would Not Impact Effective Tax Rate", "terseLabel": "Unrecognized tax benefit \u2014 Temporary tax positions" } } }, "localname": "UnrecognizedTaxBenefitsThatWouldNotImpactEffectiveTaxRate", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "nspm_UnrestrictedRetainedEarningsPerStateRegulatoryCommissionsDividendRestrictions": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Unrestricted Retained Earnings Per State Regulatory Commissions Dividend Restrictions", "label": "Unrestricted Retained Earnings Per State Regulatory Commissions Dividend Restrictions", "terseLabel": "Unrestricted Retained Earnings Per State Regulatory Commissions Dividend Restrictions" } } }, "localname": "UnrestrictedRetainedEarningsPerStateRegulatoryCommissionsDividendRestrictions", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/DividendandOtherCapitalRelatedRestrictionsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_ValuationAllowancesForStateCreditCarryforwardsNetOfFederalBenefit": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "valuation allowances for state credit carryforwards, net of federal benefit", "label": "valuation allowances for state credit carryforwards, net of federal benefit", "terseLabel": "Valuation allowances for state credit carryforwards, net of federal benefit (b)" } } }, "localname": "ValuationAllowancesForStateCreditCarryforwardsNetOfFederalBenefit", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "nspm_WeightedAverageRemainingLeaseTermOperating": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Weighted Average Remaining lease term, operating", "label": "Weighted Average Remaining lease term, operating", "terseLabel": "Weighted Average Remaining lease term, operating" } } }, "localname": "WeightedAverageRemainingLeaseTermOperating", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "nspm_WholesaleDistributionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Wholesale Distribution [Member]", "label": "Wholesale Distribution [Member]", "terseLabel": "Wholesale" } } }, "localname": "WholesaleDistributionMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "nspm_WholesaleTradingAndNonTradingCommodityCreditExposureForMostSignificantCounterparties": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Wholesale, trading and non-trading commodity credit exposure for the entity's most significant counterparties.", "label": "Wholesale, trading and non trading commodity credit exposure for the most significant counterparties", "terseLabel": "Credit exposure for the most significant counterparties" } } }, "localname": "WholesaleTradingAndNonTradingCommodityCreditExposureForMostSignificantCounterparties", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "monetaryItemType" }, "nspm_XcelEnergyMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Xcel Energy", "label": "Xcel Energy [Member]", "terseLabel": "Xcel Energy [Member]" } } }, "localname": "XcelEnergyMember", "nsuri": "http://www.xcelenergy.com/20211231", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "domainItemType" }, "srt_ConsolidatedEntitiesAxis": { "auth_ref": [ "r152", "r336", "r341", "r349", "r585", "r586", "r590", "r591", "r717", "r856", "r898", "r900", "r909", "r910" ], "lang": { "en-us": { "role": { "documentation": "Information by consolidated entity or group of entities.", "label": "Consolidated Entities [Axis]", "terseLabel": "Consolidated Entities [Axis]" } } }, "localname": "ConsolidatedEntitiesAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesVariableInterestEntitiesDetails" ], "xbrltype": "stringItemType" }, "srt_ConsolidatedEntitiesDomain": { "auth_ref": [ "r152", "r336", "r341", "r349", "r585", "r586", "r590", "r591", "r717", "r856", "r898", "r900", "r909", "r910" ], "lang": { "en-us": { "role": { "documentation": "Entity or group of entities consolidated into reporting entity.", "label": "Consolidated Entities [Domain]", "terseLabel": "Consolidated Entities [Domain]" } } }, "localname": "ConsolidatedEntitiesDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesVariableInterestEntitiesDetails" ], "xbrltype": "domainItemType" }, "srt_ConsolidationItemsAxis": { "auth_ref": [ "r152", "r206", "r219", "r220", "r221", "r222", "r224", "r226", "r230", "r336", "r337", "r338", "r339", "r340", "r341", "r343", "r344", "r346", "r348", "r349", "r900", "r901", "r902", "r903", "r904", "r905", "r906", "r907", "r908", "r909", "r910" ], "lang": { "en-us": { "role": { "documentation": "Information by components, eliminations, non-segment corporate-level activity and reconciling items used in consolidating a parent entity and its subsidiaries or its operating segments.", "label": "Consolidation Items [Axis]", "terseLabel": "Consolidation Items [Axis]" } } }, "localname": "ConsolidationItemsAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "stringItemType" }, "srt_ConsolidationItemsDomain": { "auth_ref": [ "r152", "r206", "r219", "r220", "r221", "r222", "r224", "r226", "r230", "r336", "r337", "r338", "r339", "r340", "r341", "r343", "r344", "r346", "r348", "r349", "r900", "r901", "r902", "r903", "r904", "r905", "r906", "r907", "r908", "r909", "r910" ], "lang": { "en-us": { "role": { "documentation": "Components, elimination, non-segment corporate-level activity and reconciling items used in consolidating a parent entity and its subsidiaries or its operating segments.", "label": "Consolidation Items [Domain]", "terseLabel": "Consolidation Items [Domain]" } } }, "localname": "ConsolidationItemsDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "domainItemType" }, "srt_MajorCustomersAxis": { "auth_ref": [ "r235", "r403", "r407", "r818" ], "lang": { "en-us": { "role": { "documentation": "Information by name or description of a single external customer or a group of external customers.", "label": "Customer [Axis]", "terseLabel": "Customer [Axis]" } } }, "localname": "MajorCustomersAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "stringItemType" }, "srt_MaximumMember": { "auth_ref": [ "r354", "r386", "r509", "r515", "r730", "r731", "r732", "r733", "r734", "r735", "r755", "r816", "r819", "r857", "r858" ], "lang": { "en-us": { "role": { "documentation": "Upper limit of the provided range.", "label": "Maximum [Member]", "terseLabel": "Maximum [Member]", "verboseLabel": "Maximum" } } }, "localname": "MaximumMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "srt_MinimumMember": { "auth_ref": [ "r354", "r386", "r509", "r515", "r730", "r731", "r732", "r733", "r734", "r735", "r755", "r816", "r819", "r857", "r858" ], "lang": { "en-us": { "role": { "documentation": "Lower limit of the provided range.", "label": "Minimum [Member]", "terseLabel": "Minimum [Member]" } } }, "localname": "MinimumMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "srt_NameOfMajorCustomerDomain": { "auth_ref": [ "r235", "r403", "r407", "r818" ], "lang": { "en-us": { "role": { "documentation": "Single external customer or group of external customers.", "label": "Customer [Domain]", "terseLabel": "Customer [Domain]" } } }, "localname": "NameOfMajorCustomerDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "srt_ParentCompanyMember": { "auth_ref": [ "r152" ], "lang": { "en-us": { "role": { "documentation": "The registrant that controls, directly or indirectly, another entity (or entities). The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree.", "label": "Parent Company [Member]", "terseLabel": "Parent Company [Member]", "verboseLabel": "Xcel Energy Inc." } } }, "localname": "ParentCompanyMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "domainItemType" }, "srt_ProductOrServiceAxis": { "auth_ref": [ "r232", "r403", "r405", "r758", "r815", "r817" ], "lang": { "en-us": { "role": { "documentation": "Information by product and service, or group of similar products and similar services.", "label": "Product and Service [Axis]", "terseLabel": "Product and Service [Axis]" } } }, "localname": "ProductOrServiceAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails", "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "stringItemType" }, "srt_ProductsAndServicesDomain": { "auth_ref": [ "r232", "r403", "r405", "r758", "r815", "r817" ], "lang": { "en-us": { "role": { "documentation": "Product or service, or a group of similar products or similar services.", "label": "Product and Service [Domain]", "terseLabel": "Product and Service [Domain]" } } }, "localname": "ProductsAndServicesDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails", "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "srt_RangeAxis": { "auth_ref": [ "r354", "r386", "r446", "r509", "r515", "r730", "r731", "r732", "r733", "r734", "r735", "r755", "r816", "r819", "r857", "r858" ], "lang": { "en-us": { "role": { "documentation": "Information by statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.", "label": "Statistical Measurement [Axis]", "terseLabel": "Statistical Measurement [Axis]" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "stringItemType" }, "srt_RangeMember": { "auth_ref": [ "r354", "r386", "r446", "r509", "r515", "r730", "r731", "r732", "r733", "r734", "r735", "r755", "r816", "r819", "r857", "r858" ], "lang": { "en-us": { "role": { "documentation": "Statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.", "label": "Statistical Measurement [Domain]", "terseLabel": "Statistical Measurement [Domain]" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "srt_ScenarioForecastMember": { "auth_ref": [ "r177", "r510", "r897" ], "lang": { "en-us": { "role": { "documentation": "Information reported for future period. Excludes information expected to be reported in future period for effect on historical fact.", "label": "Forecast [Member]", "terseLabel": "Forecast [Member]" } } }, "localname": "ScenarioForecastMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails" ], "xbrltype": "domainItemType" }, "srt_ScenarioUnspecifiedDomain": { "auth_ref": [ "r177", "r181", "r510" ], "lang": { "en-us": { "role": { "documentation": "Scenario reported, distinguishing information from actual fact. Includes, but is not limited to, pro forma and forecast. Excludes actual facts.", "label": "Scenario [Domain]", "terseLabel": "Scenario [Domain]" } } }, "localname": "ScenarioUnspecifiedDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails" ], "xbrltype": "domainItemType" }, "srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock": { "auth_ref": [ "r160", "r899" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for valuation and qualifying accounts and reserves.", "label": "SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]", "terseLabel": "Schedule II, Valuation and Qualifying Accounts" } } }, "localname": "ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccounts" ], "xbrltype": "textBlockItemType" }, "srt_StatementScenarioAxis": { "auth_ref": [ "r177", "r181", "r319", "r510", "r723" ], "lang": { "en-us": { "role": { "documentation": "Information by scenario reported, distinguishing information from actual fact. Includes, but is not limited to, pro forma and forecast. Excludes actual facts.", "label": "Scenario [Axis]", "terseLabel": "Scenario [Axis]" } } }, "localname": "StatementScenarioAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails" ], "xbrltype": "stringItemType" }, "srt_SubsidiariesMember": { "auth_ref": [ "r473", "r710", "r711", "r714" ], "lang": { "en-us": { "role": { "documentation": "Entity owned or controlled by another entity.", "label": "Subsidiaries [Member]", "verboseLabel": "Other subsidiaries of Xcel Energy Inc." } } }, "localname": "SubsidiariesMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "srt_ValuationAndQualifyingAccountsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]", "terseLabel": "SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]" } } }, "localname": "ValuationAndQualifyingAccountsAbstract", "nsuri": "http://fasb.org/srt/2021-01-31", "xbrltype": "stringItemType" }, "srt_ValuationAndQualifyingAccountsDisclosureLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]", "terseLabel": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]" } } }, "localname": "ValuationAndQualifyingAccountsDisclosureLineItems", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "stringItemType" }, "srt_ValuationAndQualifyingAccountsDisclosureTable": { "auth_ref": [ "r153", "r154", "r155", "r158", "r159", "r899" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of valuation and qualifying accounts and reserves.", "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]", "terseLabel": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]" } } }, "localname": "ValuationAndQualifyingAccountsDisclosureTable", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AOCIAttributableToParentNetOfTaxRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "AOCI Attributable to Parent, Net of Tax [Roll Forward]", "terseLabel": "AOCI Attributable to Parent, Net of Tax [Roll Forward]" } } }, "localname": "AOCIAttributableToParentNetOfTaxRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccountingPoliciesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Accounting Policies [Abstract]", "terseLabel": "Accounting Policies [Abstract]" } } }, "localname": "AccountingPoliciesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccountsNotesAndLoansReceivableClassifiedAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Accounts and Financing Receivable, after Allowance for Credit Loss, Current and Noncurrent [Abstract]", "terseLabel": "Accounts and Financing Receivable, after Allowance for Credit Loss, Current and Noncurrent [Abstract]" } } }, "localname": "AccountsNotesAndLoansReceivableClassifiedAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccountsNotesLoansAndFinancingReceivablesByIndustryOfCounterpartyTypeAxis": { "auth_ref": [ "r68" ], "lang": { "en-us": { "role": { "documentation": "Information by industry of counterparty. A counterparty is the other party that participates in a financial transaction.", "label": "Industry of Counterparty, Type [Axis]", "terseLabel": "Industry of Counterparty, Type [Axis]" } } }, "localname": "AccountsNotesLoansAndFinancingReceivablesByIndustryOfCounterpartyTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccountsPayableCurrent": { "auth_ref": [ "r54", "r721" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 8.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Accounts Payable, Current", "terseLabel": "Accounts payable" } } }, "localname": "AccountsPayableCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccountsReceivableNetCurrent": { "auth_ref": [ "r11", "r34", "r237", "r238" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 1.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.", "label": "Accounts Receivable, after Allowance for Credit Loss, Current", "terseLabel": "Accounts receivable, net" } } }, "localname": "AccountsReceivableNetCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedDeferredInvestmentTaxCredit": { "auth_ref": [ "r65", "r184", "r530" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The noncurrent portion of the reserve for accumulated deferred investment tax credits as of the balance sheet date. This is the remaining investment credit, which will reduce the cost of services collected from ratepayers by a ratable portion over the investment's regulatory life.", "label": "Accumulated Deferred Investment Tax Credit", "verboseLabel": "Deferred investment tax credits" } } }, "localname": "AccumulatedDeferredInvestmentTaxCredit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember": { "auth_ref": [ "r82", "r88", "r98", "r99", "r100", "r589" ], "lang": { "en-us": { "role": { "documentation": "Accumulated other comprehensive (income) loss related to defined benefit plans attributable to the parent.", "label": "Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]", "terseLabel": "Defined Benefit Pension and Postretirement Items" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": { "auth_ref": [ "r52", "r291" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.", "label": "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment", "terseLabel": "Accumulated depreciation and amortization" } } }, "localname": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember": { "auth_ref": [ "r81", "r88", "r588" ], "lang": { "en-us": { "role": { "documentation": "Accumulated other comprehensive income (loss) resulting from gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges, attributable to the parent.", "label": "Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]", "terseLabel": "Gains and Losses on Cash Flow Hedges" } } }, "localname": "AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax": { "auth_ref": [ "r81", "r85", "r87" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.", "label": "Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax", "periodEndLabel": "Accumulated other comprehensive loss related to cash flow hedges at Dec. 31", "periodStartLabel": "Accumulated other comprehensive loss related to cash flow hedges at Jan.\u00a01" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Accumulated Other Comprehensive Income (Loss) [Line Items]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Line Items]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r37", "r85", "r87", "r88", "r804", "r827", "r831" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 2.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.", "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Accumulated other comprehensive loss" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossTable": { "auth_ref": [ "r98", "r99", "r679", "r680", "r681", "r682", "r683", "r685" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about components of accumulated other comprehensive income (loss).", "label": "Accumulated Other Comprehensive Income (Loss) [Table]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Table]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [ "r84", "r88", "r98", "r99", "r100", "r162", "r163", "r164", "r589", "r822", "r823", "r916" ], "lang": { "en-us": { "role": { "documentation": "Accumulated increase (decrease) in equity from transactions and other events and circumstances from non-owner sources, attributable to the parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners.", "label": "AOCI Attributable to Parent [Member]", "terseLabel": "AOCI Attributable to Parent", "verboseLabel": "Total" } } }, "localname": "AccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY", "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AdditionalPaidInCapitalCommonStock": { "auth_ref": [ "r35" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 3.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.", "label": "Additional Paid in Capital, Common Stock", "terseLabel": "Additional paid in capital" } } }, "localname": "AdditionalPaidInCapitalCommonStock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdditionalPaidInCapitalMember": { "auth_ref": [ "r162", "r163", "r164", "r521", "r522", "r523", "r640" ], "lang": { "en-us": { "role": { "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders.", "label": "Additional Paid-in Capital [Member]", "terseLabel": "Additional Paid In Capital" } } }, "localname": "AdditionalPaidInCapitalMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalOther": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of other increase (decrease) in additional paid in capital (APIC).", "label": "Adjustments to Additional Paid in Capital, Other", "terseLabel": "Contribution of capital by parent" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalOther", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Adjustments to reconcile net income to cash provided by operating activities:" } } }, "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "stringItemType" }, "us-gaap_AllOtherSegmentsMember": { "auth_ref": [ "r202", "r219", "r220", "r221", "r222", "r224" ], "lang": { "en-us": { "role": { "documentation": "Operating segments classified as other. Excludes intersegment elimination and reconciling items.", "label": "Other Segments [Member]", "terseLabel": "All Other" } } }, "localname": "AllOtherSegmentsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AllowanceForCreditLossMember": { "auth_ref": [ "r153", "r154", "r155", "r158", "r159" ], "lang": { "en-us": { "role": { "documentation": "Allowance for credit loss from right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.", "label": "SEC Schedule, 12-09, Allowance, Credit Loss [Member]", "terseLabel": "Allowance for Bad Debts" } } }, "localname": "AllowanceForCreditLossMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent": { "auth_ref": [ "r41", "r243", "r274" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of allowance for credit loss on accounts receivable, classified as current.", "label": "Accounts Receivable, Allowance for Credit Loss, Current", "terseLabel": "Allowance for bad debts" } } }, "localname": "AllowanceForDoubtfulAccountsReceivableCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllowanceForFundsUsedDuringConstructionInvestingActivities": { "auth_ref": [ "r116", "r868" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash inflow due to change during the period in the allowance for other funds used during construction classified as an investing activity.", "label": "Allowance for Funds Used During Construction, Investing Activities", "terseLabel": "Allowance for equity funds used during construction" } } }, "localname": "AllowanceForFundsUsedDuringConstructionInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllowanceForFundsUsedDuringConstructionPolicy": { "auth_ref": [ "r868" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for AFUDC (for example, component of PPE, credit to income statement), information regarding the inclusion in rates (only capitalized if its inclusion in rates is probable) and description of AFUDC (for example, represents the cost of capital used during construction).", "label": "Allowance for Funds Used During Construction, Policy [Policy Text Block]", "terseLabel": "AFUDC" } } }, "localname": "AllowanceForFundsUsedDuringConstructionPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_AlternativeInvestment": { "auth_ref": [ "r643", "r655" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.", "label": "Alternative Investment", "terseLabel": "Alternative Investment" } } }, "localname": "AlternativeInvestment", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetRetirementObligation": { "auth_ref": [ "r299" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.", "label": "Asset Retirement Obligation", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "terseLabel": "Asset Retirement Obligation" } } }, "localname": "AssetRetirementObligation", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetRetirementObligationAccretionExpense": { "auth_ref": [ "r297", "r302" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.", "label": "Asset Retirement Obligation, Accretion Expense", "terseLabel": "Accretion" } } }, "localname": "AssetRetirementObligationAccretionExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetRetirementObligationCostsMember": { "auth_ref": [ "r864", "r872" ], "lang": { "en-us": { "role": { "documentation": "Rate action of a regulator resulting in capitalization or accrual of costs for the retirement of long-lived assets.", "label": "Asset Retirement Obligation Costs [Member]", "verboseLabel": "Net AROs" } } }, "localname": "AssetRetirementObligationCostsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AssetRetirementObligationLiabilitiesIncurred": { "auth_ref": [ "r300" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of asset retirement obligations incurred during the period.", "label": "Asset Retirement Obligation, Liabilities Incurred", "negatedTerseLabel": "Amounts Incurred" } } }, "localname": "AssetRetirementObligationLiabilitiesIncurred", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetRetirementObligationLiabilitiesSettled": { "auth_ref": [ "r301" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.", "label": "Asset Retirement Obligation, Liabilities Settled", "terseLabel": "Amounts Settled" } } }, "localname": "AssetRetirementObligationLiabilitiesSettled", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetRetirementObligationRevisionOfEstimate": { "auth_ref": [ "r296", "r303" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.", "label": "Asset Retirement Obligation, Revision of Estimate", "terseLabel": "Cash flow revisions" } } }, "localname": "AssetRetirementObligationRevisionOfEstimate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]", "terseLabel": "Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]" } } }, "localname": "AssetRetirementObligationRollForwardAnalysisRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AssetRetirementObligationsNoncurrent": { "auth_ref": [ "r299" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 4.0, "parentTag": "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.", "label": "Asset Retirement Obligations, Noncurrent", "terseLabel": "Asset retirement obligations" } } }, "localname": "AssetRetirementObligationsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetRetirementObligationsPolicy": { "auth_ref": [ "r304" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for legal obligation associated with retirement of long-lived asset that results from acquisition, construction, or development or from normal operation of long-lived asset. Excludes environmental remediation liability from improper or other-than-normal operation of long-lived asset, obligation arising in connection with leased property that meets definition of lease payments or variable lease payments and from plan to sell or otherwise dispose of a long-lived asset.", "label": "Asset Retirement Obligation [Policy Text Block]", "terseLabel": "Asset Retirement Obligations" } } }, "localname": "AssetRetirementObligationsPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_Assets": { "auth_ref": [ "r146", "r214", "r221", "r228", "r265", "r336", "r337", "r338", "r340", "r341", "r342", "r343", "r345", "r347", "r349", "r350", "r585", "r590", "r666", "r719", "r721", "r778", "r801" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets", "totalLabel": "Total assets" } } }, "localname": "Assets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets [Abstract]", "verboseLabel": "Assets" } } }, "localname": "AssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsCurrent": { "auth_ref": [ "r13", "r14", "r72", "r146", "r265", "r336", "r337", "r338", "r340", "r341", "r342", "r343", "r345", "r347", "r349", "r350", "r585", "r590", "r666", "r719", "r721" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 3.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets, Current", "totalLabel": "Total current assets" } } }, "localname": "AssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets, Current [Abstract]", "verboseLabel": "Current assets" } } }, "localname": "AssetsCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsFairValueDisclosure": { "auth_ref": [ "r644" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets, Fair Value Disclosure", "terseLabel": "Total" } } }, "localname": "AssetsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsNoncurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets, Noncurrent [Abstract]", "verboseLabel": "Other assets" } } }, "localname": "AssetsNoncurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "stringItemType" }, "us-gaap_AvailableForSaleSecurities": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.", "label": "Available-for-sale Securities", "terseLabel": "Comingled funds", "verboseLabel": "Available-for-sale Securities" } } }, "localname": "AvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": { "auth_ref": [ "r253", "r256", "r793" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10", "terseLabel": "Due in 5 to 10 Years" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": { "auth_ref": [ "r253", "r255", "r792" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five", "terseLabel": "Due in 1 to 5 Years" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue": { "auth_ref": [ "r253", "r257", "r794" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10", "terseLabel": "Due after 10 Years" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]", "terseLabel": "Final Contractual Maturity [Abstract]" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate": { "auth_ref": [ "r253", "r258", "r795" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value", "terseLabel": "Total" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue": { "auth_ref": [ "r253", "r254", "r791" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One", "negatedLabel": "Due in 1 Year or Less" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtSecurities": { "auth_ref": [ "r251", "r252", "r281", "r782" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale", "terseLabel": "Debt securities" } } }, "localname": "AvailableForSaleSecuritiesDebtSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesEquitySecurities": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of equity securities categorized neither as held-to-maturity nor as trading.", "label": "Available-for-sale Securities, Equity Securities", "terseLabel": "Equity securities" } } }, "localname": "AvailableForSaleSecuritiesEquitySecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BalanceSheetLocationAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by location on balance sheet (statement of financial position).", "label": "Balance Sheet Location [Axis]", "terseLabel": "Balance Sheet Location [Axis]" } } }, "localname": "BalanceSheetLocationAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BalanceSheetLocationDomain": { "auth_ref": [ "r607", "r612" ], "lang": { "en-us": { "role": { "documentation": "Location in the balance sheet (statement of financial position).", "label": "Balance Sheet Location [Domain]", "terseLabel": "Balance Sheet Location [Domain]" } } }, "localname": "BalanceSheetLocationDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_BalanceSheetRelatedDisclosuresAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Balance Sheet Related Disclosures [Abstract]", "terseLabel": "Balance Sheet Related Disclosures [Abstract]" } } }, "localname": "BalanceSheetRelatedDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_BondsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Debt security, in which the authorized issuer owes the holder a debt and is obliged to repay the principal and interest (the coupon).", "label": "Bonds [Member]", "terseLabel": "First Mortgage Bonds" } } }, "localname": "BondsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock": { "auth_ref": [ "r8", "r161", "r201" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).", "label": "Business Description and Basis of Presentation [Text Block]", "terseLabel": "Business and System of Accounts" } } }, "localname": "BusinessDescriptionAndBasisOfPresentationTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CapitalAdditionsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contractual obligation to increase property, plant and equipment either through construction or future purchases.", "label": "Capital Addition Purchase Commitments [Member]", "terseLabel": "Capital Addition Purchase Commitments [Member]" } } }, "localname": "CapitalAdditionsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CapitalExpendituresIncurredButNotYetPaid": { "auth_ref": [ "r135", "r136", "r137" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Future cash outflow to pay for purchases of fixed assets that have occurred.", "label": "Capital Expenditures Incurred but Not yet Paid", "terseLabel": "Accrued property, plant and equipment additions" } } }, "localname": "CapitalExpendituresIncurredButNotYetPaid", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_CapitalizationLongtermDebtAndEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Capitalization, Long-term Debt and Equity [Abstract]", "verboseLabel": "Capitalization" } } }, "localname": "CapitalizationLongtermDebtAndEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "stringItemType" }, "us-gaap_CarryingReportedAmountFairValueDisclosureMember": { "auth_ref": [ "r661", "r662" ], "lang": { "en-us": { "role": { "documentation": "Measured as reported on the statement of financial position (balance sheet).", "label": "Reported Value Measurement [Member]", "terseLabel": "Cost" } } }, "localname": "CarryingReportedAmountFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashAndCashEquivalentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Cash and Cash Equivalents [Abstract]", "terseLabel": "Cash and Cash Equivalents [Abstract]" } } }, "localname": "CashAndCashEquivalentsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CashAndCashEquivalentsAtCarryingValue": { "auth_ref": [ "r9", "r47", "r132" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 5.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.", "label": "Cash and Cash Equivalents, at Carrying Value", "terseLabel": "Cash and cash equivalents" } } }, "localname": "CashAndCashEquivalentsAtCarryingValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsFairValueDisclosure": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash and Cash Equivalents, Fair Value Disclosure", "terseLabel": "Cash equivalents" } } }, "localname": "CashAndCashEquivalentsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash and Cash Equivalents [Member]", "terseLabel": "Cash", "verboseLabel": "Cash equivalents" } } }, "localname": "CashAndCashEquivalentsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashAndCashEquivalentsPolicyTextBlock": { "auth_ref": [ "r20", "r133" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.", "label": "Cash and Cash Equivalents, Policy [Policy Text Block]", "terseLabel": "Cash and Cash Equivalents" } } }, "localname": "CashAndCashEquivalentsPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": { "auth_ref": [ "r125", "r132", "r138" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents", "periodEndLabel": "Cash, cash equivalents and restricted cash at end of period", "periodStartLabel": "Cash, cash equivalents and restricted cash at beginning of period" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": { "auth_ref": [ "r125", "r678" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect", "totalLabel": "Net change in cash, cash equivalents and restricted cash" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet": { "auth_ref": [ "r598" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Net fair value of all derivative instruments designated as cash flow hedging instruments, which is ordinarily reflected within other comprehensive income.", "label": "Cash Flow Hedges Derivative Instruments at Fair Value, Net", "terseLabel": "Commodity contracts designated as cash flow hedges" } } }, "localname": "CashFlowHedgesDerivativeInstrumentsAtFairValueNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommodityDerivativesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashFlowHedgingMember": { "auth_ref": [ "r603" ], "lang": { "en-us": { "role": { "documentation": "Hedge of the exposure to variability in the cash flows of a recognized asset or liability, or of a forecasted transaction, that is attributable to a particular risk.", "label": "Cash Flow Hedging [Member]", "terseLabel": "Cash Flow Hedges" } } }, "localname": "CashFlowHedgingMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock": { "auth_ref": [ "r434" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the change in the benefit obligation, fair value of plan assets, and funded status of pension plans or other employee benefit plans.", "label": "Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]", "terseLabel": "Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]" } } }, "localname": "ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommercialPaperMember": { "auth_ref": [ "r332" ], "lang": { "en-us": { "role": { "documentation": "Unsecured promissory note (generally negotiable) that provides institutions with short-term funds.", "label": "Commercial Paper [Member]", "terseLabel": "Commercial Paper [Member]" } } }, "localname": "CommercialPaperMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r64", "r318", "r783", "r808" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.", "label": "Commitments and Contingencies", "terseLabel": "Commitments and contingencies" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Commitments and Contingencies Disclosure [Abstract]", "terseLabel": "Commitments and Contingencies Disclosure [Abstract]" } } }, "localname": "CommitmentsAndContingenciesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r311", "r313", "r317", "r328", "r852" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for commitments and contingencies.", "label": "Commitments and Contingencies Disclosure [Text Block]", "terseLabel": "Commitments and Contingencies" } } }, "localname": "CommitmentsAndContingenciesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingencies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommodityContractMember": { "auth_ref": [ "r447", "r617" ], "lang": { "en-us": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to commodity prices.", "label": "Commodity Contract [Member]", "terseLabel": "Commodity Contract [Member]" } } }, "localname": "CommodityContractMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [ "r162", "r163", "r640" ], "lang": { "en-us": { "role": { "documentation": "Stock that is subordinate to all other stock of the issuer.", "label": "Common Stock [Member]", "terseLabel": "Common stock" } } }, "localname": "CommonStockMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r32" ], "lang": { "en-us": { "role": { "documentation": "Face amount or stated value per share of common stock.", "label": "Common Stock, Par or Stated Value Per Share", "terseLabel": "Common Stock, Par or Stated Value Per Share" } } }, "localname": "CommonStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r32" ], "lang": { "en-us": { "role": { "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.", "label": "Common Stock, Shares Authorized", "terseLabel": "Common Stock, Shares Authorized" } } }, "localname": "CommonStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r32", "r388" ], "lang": { "en-us": { "role": { "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.", "label": "Common Stock, Shares, Outstanding", "periodEndLabel": "Balance at end of period (shares)", "periodStartLabel": "Balance at beginning of period (shares)", "terseLabel": "Common stock outstanding (shares)" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r32", "r721" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 4.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Common Stock, Value, Issued", "verboseLabel": "Common Stock, Value, Issued" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_CompensationAndRetirementDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Retirement Benefits [Abstract]", "terseLabel": "Retirement Benefits [Abstract]" } } }, "localname": "CompensationAndRetirementDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_ComprehensiveIncomeNetOfTax": { "auth_ref": [ "r93", "r95", "r96", "r107", "r788", "r812" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.", "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent", "totalLabel": "Total comprehensive income" } } }, "localname": "ComprehensiveIncomeNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNetOfTaxAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]", "terseLabel": "Comprehensive income:" } } }, "localname": "ComprehensiveIncomeNetOfTaxAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" ], "xbrltype": "stringItemType" }, "us-gaap_ComprehensiveIncomeNoteTextBlock": { "auth_ref": [ "r106", "r115", "r787", "r811" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.", "label": "Comprehensive Income (Loss) Note [Text Block]", "terseLabel": "Other Comprehensive Income" } } }, "localname": "ComprehensiveIncomeNoteTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncome" ], "xbrltype": "textBlockItemType" }, "us-gaap_ConcentrationRiskByTypeAxis": { "auth_ref": [ "r196", "r197", "r235", "r663", "r664", "r833", "r851" ], "lang": { "en-us": { "role": { "documentation": "Information by type of concentration risk, for example, but not limited to, asset, liability, net assets, geographic, customer, employees, supplier, lender.", "label": "Concentration Risk Type [Axis]", "terseLabel": "Concentration Risk Type [Axis]" } } }, "localname": "ConcentrationRiskByTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ConcentrationRiskTypeDomain": { "auth_ref": [ "r196", "r197", "r235", "r663", "r664", "r851" ], "lang": { "en-us": { "role": { "documentation": "For an entity that discloses a concentration risk as a percentage of some financial balance or benchmark, identifies the type (for example, asset, liability, net assets, geographic, customer, employees, supplier, lender) of the concentration.", "label": "Concentration Risk Type [Domain]", "terseLabel": "Concentration Risk Type [Domain]" } } }, "localname": "ConcentrationRiskTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ConsolidationPolicyTextBlock": { "auth_ref": [ "r140", "r587" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.", "label": "Consolidation, Policy [Policy Text Block]", "terseLabel": "Principles of Consolidation" } } }, "localname": "ConsolidationPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ConstructionInProgressMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.", "label": "Construction in Progress [Member]", "terseLabel": "CWIP" } } }, "localname": "ConstructionInProgressMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CostsAndExpenses": { "auth_ref": [ "r109" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Total costs of sales and operating expenses for the period.", "label": "Costs and Expenses", "totalLabel": "Total operating expenses" } } }, "localname": "CostsAndExpenses", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_CostsAndExpensesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Costs and Expenses [Abstract]", "verboseLabel": "Operating expenses" } } }, "localname": "CostsAndExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CostsAndExpensesRelatedParty": { "auth_ref": [ "r112" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Costs of sales and operating expenses for the period incurred from transactions with related parties.", "label": "Costs and Expenses, Related Party", "terseLabel": "Costs and Expenses, Related Party" } } }, "localname": "CostsAndExpensesRelatedParty", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CreditConcentrationRiskMember": { "auth_ref": [ "r665" ], "lang": { "en-us": { "role": { "documentation": "Reflects the percentage that a specified receivable or amount at risk from a counterparty under a contractual arrangement is to a specified benchmark, such as total receivables, net revenues, pretax results. Risk is the materially adverse effects of loss attributable to (a) the failure to collect a significant receivable from a major customer or group of homogeneous accounts, or (b) a failure by a counterparty to perform under terms of a contractual arrangement.", "label": "Credit Concentration Risk [Member]", "terseLabel": "Credit Concentration Risk" } } }, "localname": "CreditConcentrationRiskMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CreditFacilityAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.", "label": "Credit Facility [Axis]", "terseLabel": "Credit Facility [Axis]" } } }, "localname": "CreditFacilityAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CreditFacilityDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.", "label": "Credit Facility [Domain]", "terseLabel": "Credit Facility [Domain]" } } }, "localname": "CreditFacilityDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CurrentFederalTaxExpenseBenefit": { "auth_ref": [ "r147", "r556", "r568" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Current Federal Tax Expense (Benefit)", "terseLabel": "Current federal tax (benefit) expense" } } }, "localname": "CurrentFederalTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrentStateAndLocalTaxExpenseBenefit": { "auth_ref": [ "r147", "r556", "r568" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Current State and Local Tax Expense (Benefit)", "terseLabel": "Current state tax (benefit) expense" } } }, "localname": "CurrentStateAndLocalTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Debt Disclosure [Abstract]", "terseLabel": "Debt Disclosure [Abstract]" } } }, "localname": "DebtDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_DebtDisclosureTextBlock": { "auth_ref": [ "r144", "r357", "r358", "r359", "r360", "r361", "r362", "r363", "r368", "r375", "r376", "r378", "r385" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.", "label": "Debt Disclosure [Text Block]", "terseLabel": "Borrowings and Other Financing Instruments" } } }, "localname": "DebtDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstruments" ], "xbrltype": "textBlockItemType" }, "us-gaap_DebtInstrumentAxis": { "auth_ref": [ "r27", "r29", "r30", "r145", "r152", "r351", "r352", "r353", "r354", "r355", "r356", "r358", "r364", "r365", "r366", "r367", "r369", "r370", "r371", "r372", "r373", "r374", "r381", "r382", "r383", "r384", "r693", "r779", "r780", "r799" ], "lang": { "en-us": { "role": { "documentation": "Information by type of debt instrument, including, but not limited to, draws against credit facilities.", "label": "Debt Instrument [Axis]", "terseLabel": "Debt Instrument [Axis]" } } }, "localname": "DebtInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentCarryingAmount": { "auth_ref": [ "r30", "r379", "r780", "r799" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.", "label": "Long-term Debt, Gross", "terseLabel": "Long-term Debt, Gross" } } }, "localname": "DebtInstrumentCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofLongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentFaceAmount": { "auth_ref": [ "r351", "r381", "r382", "r690", "r693", "r694" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Face (par) amount of debt instrument at time of issuance.", "label": "Debt Instrument, Face Amount", "terseLabel": "Face Amount" } } }, "localname": "DebtInstrumentFaceAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentInterestRateStatedPercentage": { "auth_ref": [ "r61", "r352" ], "lang": { "en-us": { "role": { "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.", "label": "Debt Instrument, Interest Rate, Stated Percentage", "terseLabel": "Debt Instrument, Interest Rate, Stated Percentage" } } }, "localname": "DebtInstrumentInterestRateStatedPercentage", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Debt Instrument [Line Items]", "terseLabel": "Long-Term Borrowings and Other Financing Instruments" } } }, "localname": "DebtInstrumentLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentNameDomain": { "auth_ref": [ "r62", "r145", "r152", "r351", "r352", "r353", "r354", "r355", "r356", "r358", "r364", "r365", "r366", "r367", "r369", "r370", "r371", "r372", "r373", "r374", "r381", "r382", "r383", "r384", "r693" ], "lang": { "en-us": { "role": { "documentation": "The name for the particular debt instrument or borrowing that distinguishes it from other debt instruments or borrowings, including draws against credit facilities.", "label": "Debt Instrument, Name [Domain]", "terseLabel": "Debt Instrument, Name [Domain]" } } }, "localname": "DebtInstrumentNameDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DebtInstrumentTable": { "auth_ref": [ "r62", "r145", "r152", "r351", "r352", "r353", "r354", "r355", "r356", "r358", "r364", "r365", "r366", "r367", "r369", "r370", "r371", "r372", "r373", "r374", "r377", "r381", "r382", "r383", "r384", "r389", "r390", "r391", "r392", "r689", "r690", "r693", "r694", "r798" ], "lang": { "en-us": { "role": { "documentation": "A table or schedule providing information pertaining to long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.", "label": "Schedule of Long-term Debt Instruments [Table]", "terseLabel": "Schedule of Long-term Debt Instruments [Table]" } } }, "localname": "DebtInstrumentTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet": { "auth_ref": [ "r364", "r689", "r690", "r691", "r692", "r694" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, after accumulated amortization, of debt discount (premium).", "label": "Debt Instrument, Unamortized Discount (Premium), Net", "negatedLabel": "Unamortized discount" } } }, "localname": "DebtInstrumentUnamortizedDiscountPremiumNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtLongtermAndShorttermCombinedAmount": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Represents the aggregate of total long-term debt, including current maturities and short-term debt.", "label": "Debt, Long-term and Short-term, Combined Amount", "terseLabel": "Drawn" } } }, "localname": "DebtLongtermAndShorttermCombinedAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts": { "auth_ref": [ "r113" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Represents the charge against earnings during the period for commitment fees and debt issuance expenses.", "label": "Debt Related Commitment Fees and Debt Issuance Costs", "terseLabel": "Other financing costs" } } }, "localname": "DebtRelatedCommitmentFeesAndDebtIssuanceCosts", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOMEParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesMember": { "auth_ref": [ "r261" ], "lang": { "en-us": { "role": { "documentation": "Debt instrument issued by corporations, governments and governmental agencies, municipalities, and other institutions.", "label": "Debt Securities [Member]", "terseLabel": "Debt Securities [Member]" } } }, "localname": "DebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DecommissioningTrustAssetsAmount": { "auth_ref": [ "r298" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.", "label": "Decommissioning Fund Investments, Fair Value", "terseLabel": "Decommissioning Fund Investments", "verboseLabel": "Legally restricted assets, for purposes of funding future nuclear decommissioning" } } }, "localname": "DecommissioningTrustAssetsAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible": { "auth_ref": [ "r539" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.", "label": "Decrease in Unrecognized Tax Benefits is Reasonably Possible", "terseLabel": "Decrease in Unrecognized Tax Benefits is Reasonably Possible" } } }, "localname": "DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredFederalIncomeTaxExpenseBenefit": { "auth_ref": [ "r147", "r557", "r568" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred Federal Income Tax Expense (Benefit)", "terseLabel": "Deferred federal tax benefit" } } }, "localname": "DeferredFederalIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredFinanceCostsNoncurrentNet": { "auth_ref": [ "r53", "r691" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.", "label": "Debt Issuance Costs, Noncurrent, Net", "terseLabel": "Deferred Finance Costs, Noncurrent, Net" } } }, "localname": "DeferredFinanceCostsNoncurrentNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/DeferredFinancingCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredFuelCostsMember": { "auth_ref": [ "r864" ], "lang": { "en-us": { "role": { "documentation": "Rate action of a regulator resulting in capitalization or accrual of fuel costs incurred.", "label": "Deferred Fuel Costs [Member]", "verboseLabel": "Deferred Purchased Natural Gas and Electric Energy Costs" } } }, "localname": "DeferredFuelCostsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DeferredIncomeTaxChargesMember": { "auth_ref": [ "r864", "r871", "r880", "r881" ], "lang": { "en-us": { "role": { "documentation": "Rate action of a regulator resulting in capitalization or accrual of income taxes.", "label": "Deferred Income Tax Charge [Member]", "terseLabel": "Deferred income tax adjustments and TCJA refunds" } } }, "localname": "DeferredIncomeTaxChargesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DeferredIncomeTaxExpenseBenefit": { "auth_ref": [ "r130", "r147", "r557", "r568", "r569", "r570" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred Income Tax Expense (Benefit)", "verboseLabel": "Deferred income taxes" } } }, "localname": "DeferredIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxLiabilitiesNet": { "auth_ref": [ "r532", "r533" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.", "label": "Deferred Income Tax Liabilities, Net", "terseLabel": "Deferred income taxes" } } }, "localname": "DeferredIncomeTaxLiabilitiesNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit": { "auth_ref": [ "r147", "r557", "r568" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred State and Local Income Tax Expense (Benefit)", "terseLabel": "Deferred state tax expense" } } }, "localname": "DeferredStateAndLocalIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal": { "auth_ref": [ "r554", "r555" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.", "label": "Deferred Tax Assets, Operating Loss Carryforwards, State and Local", "terseLabel": "State NOL carryforwards" } } }, "localname": "DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsOther": { "auth_ref": [ "r554", "r555" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.", "label": "Deferred Tax Assets, Other", "terseLabel": "Other" } } }, "localname": "DeferredTaxAssetsOther", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpense": { "auth_ref": [ "r554", "r555" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, before allocation of valuation allowances, of deferred tax asset attributable to deductible differences from reserves and accruals, compensation and benefit costs, and other provisions, reserves, and allowances.", "label": "Deferred Tax Assets, Tax Deferred Expense", "negatedTerseLabel": "Deferred tax benefit" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther": { "auth_ref": [ "r554", "r555" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from provisions, reserves, allowances, and accruals, classified as other.", "label": "Deferred Tax Assets, Tax Deferred Expense, Other", "terseLabel": "Other" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseOther", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsValuationAllowance": { "auth_ref": [ "r549" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.", "label": "Deferred Tax Assets, Valuation Allowance", "negatedTerseLabel": "Valuation allowances for state NOL carryforwards" } } }, "localname": "DeferredTaxAssetsValuationAllowance", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilities": { "auth_ref": [ "r533", "r550" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.", "label": "Deferred Tax Liabilities, Net", "terseLabel": "Net deferred tax liability" } } }, "localname": "DeferredTaxLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome": { "auth_ref": [ "r554", "r555" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other.", "label": "Deferred Tax Liabilities, Tax Deferred Income", "terseLabel": "Total deferred tax liabilities" } } }, "localname": "DeferredTaxLiabilitiesTaxDeferredIncome", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation": { "auth_ref": [ "r455" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.", "label": "Defined Benefit Plan, Accumulated Benefit Obligation", "negatedTerseLabel": "Defined Benefit Plan, Accumulated Benefit Obligation", "terseLabel": "Defined Benefit Plan, Accumulated Benefit Obligation" } } }, "localname": "DefinedBenefitPlanAccumulatedBenefitObligation", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax": { "auth_ref": [ "r83", "r88", "r467" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 1.0, "parentTag": "nspm_AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).", "label": "Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax", "terseLabel": "Net loss" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]", "terseLabel": "Amounts Not Yet Recognized as Components of Net Periodic Benefit Cost [Abstract]" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax": { "auth_ref": [ "r88", "r467" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 2.0, "parentTag": "nspm_AmountsNotYetRecognizedAsComponentsOfNetPeriodicBenefitCostTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).", "label": "Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax", "terseLabel": "Prior service (credit) cost" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets": { "auth_ref": [ "r436", "r495" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.", "label": "Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)", "terseLabel": "Actual return (loss) on plan assets" } } }, "localname": "DefinedBenefitPlanActualReturnOnPlanAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanActuarialGainLoss": { "auth_ref": [ "r428" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.", "label": "Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)", "negatedTerseLabel": "Actuarial (gain) loss" } } }, "localname": "DefinedBenefitPlanActuarialGainLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses": { "auth_ref": [ "r421", "r462", "r489", "r495", "r496" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 5.0, "parentTag": "nspm_DefinedBenefitPlanNetBenefitCostCreditRecognizedBeforeRegulatoryAdjustments", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.", "label": "Defined Benefit Plan, Amortization of Gain (Loss)", "negatedLabel": "Amortization of net loss" } } }, "localname": "DefinedBenefitPlanAmortizationOfGainsLosses", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit": { "auth_ref": [ "r421", "r463", "r490", "r495", "r496" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 4.0, "parentTag": "nspm_DefinedBenefitPlanNetBenefitCostCreditRecognizedBeforeRegulatoryAdjustments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.", "label": "Defined Benefit Plan, Amortization of Prior Service Cost (Credit)", "terseLabel": "Amortization of prior service cost (credit)" } } }, "localname": "DefinedBenefitPlanAmortizationOfPriorServiceCostCredit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet": { "auth_ref": [ "r419", "r444" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.", "label": "Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position", "totalLabel": "Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position", "verboseLabel": "Net postretirement amounts recognized on consolidated balance sheets" } } }, "localname": "DefinedBenefitPlanAmountsRecognizedInBalanceSheet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]", "terseLabel": "Amounts Not Yet Recognized as Components of Net Periodic Benefit Cost Have Been Recorded as Follows Based Upon Expected Recovery in Rates [Abstract]" } } }, "localname": "DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plan, Plan Assets, Allocations [Abstract]", "terseLabel": "Target Pension Asset Allocations [Abstract]" } } }, "localname": "DefinedBenefitPlanAssetsTargetAllocationsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate": { "auth_ref": [ "r468" ], "lang": { "en-us": { "role": { "documentation": "Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate", "terseLabel": "Discount rate for year-end valuation (as a percent)" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease": { "auth_ref": [ "r469" ], "lang": { "en-us": { "role": { "documentation": "Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase", "verboseLabel": "Expected average long-term increase in compensation level (as a percent)" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate": { "auth_ref": [ "r468" ], "lang": { "en-us": { "role": { "documentation": "Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate", "terseLabel": "Discount rate (as a percent)", "verboseLabel": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets": { "auth_ref": [ "r470", "r494" ], "lang": { "en-us": { "role": { "documentation": "Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets", "terseLabel": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets", "verboseLabel": "Expected average long-term rate of return on assets (as a percent)" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease": { "auth_ref": [ "r469" ], "lang": { "en-us": { "role": { "documentation": "Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase", "terseLabel": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanBenefitObligation": { "auth_ref": [ "r423" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanFundedStatusOfPlan", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.", "label": "Defined Benefit Plan, Benefit Obligation", "periodEndLabel": "Obligation at Dec. 31", "periodStartLabel": "Obligation at Jan. 1", "terseLabel": "Total benefit obligation" } } }, "localname": "DefinedBenefitPlanBenefitObligation", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid": { "auth_ref": [ "r430", "r501" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.", "label": "Defined Benefit Plan, Benefit Obligation, Benefits Paid", "negatedLabel": "Benefit payments" } } }, "localname": "DefinedBenefitPlanBenefitObligationBenefitsPaid", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis": { "auth_ref": [ "r446", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r473", "r495" ], "lang": { "en-us": { "role": { "documentation": "Information by defined benefit plan asset investment.", "label": "Defined Benefit Plan, Plan Assets, Category [Axis]", "terseLabel": "Defined Benefit Plan, Plan Assets, Category" } } }, "localname": "DefinedBenefitPlanByPlanAssetCategoriesAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]", "terseLabel": "Change in Projected Benefit Obligation [Roll Forward]" } } }, "localname": "DefinedBenefitPlanChangeInBenefitObligationRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]", "terseLabel": "Change in Fair Value of Plan Assets [Roll Forward]" } } }, "localname": "DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanContributionsByEmployer": { "auth_ref": [ "r438", "r447", "r449", "r493", "r495", "r496" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of contribution received by defined benefit plan from employer which increases plan assets.", "label": "Defined Benefit Plan, Plan Assets, Contributions by Employer", "terseLabel": "Employer contributions" } } }, "localname": "DefinedBenefitPlanContributionsByEmployer", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanDisclosureLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Defined Benefit Plan Disclosure [Line Items]", "terseLabel": "Defined Benefit Plan Disclosure [Line Items]" } } }, "localname": "DefinedBenefitPlanDisclosureLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plan, Expected Future Benefit Payment [Abstract]", "terseLabel": "Defined Benefit Plan, Gross Projected Benefit Payments [Abstract]" } } }, "localname": "DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter": { "auth_ref": [ "r456" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years", "verboseLabel": "2027-2031" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths": { "auth_ref": [ "r456" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year One", "verboseLabel": "2022" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive": { "auth_ref": [ "r456" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Five", "verboseLabel": "2026" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour": { "auth_ref": [ "r456" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Four", "verboseLabel": "2025" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree": { "auth_ref": [ "r456" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Three", "verboseLabel": "2024" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo": { "auth_ref": [ "r456" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Two", "verboseLabel": "2023" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets": { "auth_ref": [ "r421", "r461", "r488", "r495", "r496" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 3.0, "parentTag": "nspm_DefinedBenefitPlanNetBenefitCostCreditRecognizedBeforeRegulatoryAdjustments", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.", "label": "Defined Benefit Plan, Expected Return (Loss) on Plan Assets", "negatedLabel": "Expected return on plan assets" } } }, "localname": "DefinedBenefitPlanExpectedReturnOnPlanAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanFairValueOfPlanAssets": { "auth_ref": [ "r435", "r447", "r449", "r450", "r495" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanFundedStatusOfPlan", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.", "label": "Defined Benefit Plan, Plan Assets, Amount", "periodEndLabel": "Fair value of plan assets at Dec. 31", "periodStartLabel": "Fair value of plan assets at Jan. 1", "terseLabel": "Fair value of plan assets", "verboseLabel": "Defined Benefit Plan, Plan Assets, Amount" } } }, "localname": "DefinedBenefitPlanFairValueOfPlanAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanFundedStatusOfPlan": { "auth_ref": [ "r419", "r444", "r495" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.", "label": "Defined Benefit Plan, Funded (Unfunded) Status of Plan", "terseLabel": "Funded status", "totalLabel": "Funded status" } } }, "localname": "DefinedBenefitPlanFundedStatusOfPlan", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]", "terseLabel": "Funded Status of Plans at Dec. 31 [Abstract]" } } }, "localname": "DefinedBenefitPlanFundedStatusOfPlanAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanInterestCost": { "auth_ref": [ "r421", "r426", "r460", "r487", "r495", "r496" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 2.0, "parentTag": "nspm_DefinedBenefitPlanNetBenefitCostCreditRecognizedBeforeRegulatoryAdjustments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cost recognized for passage of time related to defined benefit plan.", "label": "Defined Benefit Plan, Interest Cost", "terseLabel": "Interest cost" } } }, "localname": "DefinedBenefitPlanInterestCost", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost": { "auth_ref": [ "r458", "r485", "r495", "r496" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of net periodic benefit cost (credit) for defined benefit plan.", "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit)", "terseLabel": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit)", "totalLabel": "Net benefit cost recognized for financial reporting", "verboseLabel": "Net benefit cost recognized for financial reporting" } } }, "localname": "DefinedBenefitPlanNetPeriodicBenefitCost", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]", "terseLabel": "Components of Net Periodic Benefit Cost (Credit) [Abstract]" } } }, "localname": "DefinedBenefitPlanNetPeriodicBenefitCostAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanPlanAmendments": { "auth_ref": [ "r431" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.", "label": "Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment", "terseLabel": "Plan amendments" } } }, "localname": "DefinedBenefitPlanPlanAmendments", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid": { "auth_ref": [ "r440", "r501" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.", "label": "Defined Benefit Plan, Plan Assets, Benefits Paid", "negatedLabel": "Benefit payments" } } }, "localname": "DefinedBenefitPlanPlanAssetsBenefitsPaid", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage": { "auth_ref": [ "r446", "r495" ], "lang": { "en-us": { "role": { "documentation": "Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.", "label": "Defined Benefit Plan, Plan Assets, Target Allocation, Percentage", "terseLabel": "Target pension asset allocations (as a percent)" } } }, "localname": "DefinedBenefitPlanPlanAssetsTargetAllocationPercentage", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1": { "auth_ref": [ "r422", "r465", "r492" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 6.0, "parentTag": "nspm_DefinedBenefitPlanNetBenefitCostCreditRecognizedBeforeRegulatoryAdjustments", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.", "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement", "negatedTerseLabel": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement", "terseLabel": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement" } } }, "localname": "DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanServiceCost": { "auth_ref": [ "r424", "r459", "r486", "r495", "r496" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 1.0, "parentTag": "nspm_DefinedBenefitPlanNetBenefitCostCreditRecognizedBeforeRegulatoryAdjustments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.", "label": "Defined Benefit Plan, Service Cost", "terseLabel": "Service cost" } } }, "localname": "DefinedBenefitPlanServiceCost", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1": { "auth_ref": [ "r472" ], "lang": { "en-us": { "role": { "documentation": "Ultimate trend rate for health care cost for defined benefit postretirement plan.", "label": "Defined Benefit Plan, Ultimate Health Care Cost Trend Rate", "terseLabel": "Ultimate health care trend assumption rate (as a percent)", "verboseLabel": "Defined Benefit Plan, Ultimate Health Care Cost Trend Rate" } } }, "localname": "DefinedBenefitPlanUltimateHealthCareCostTrendRate1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]", "terseLabel": "Significant Assumptions Used to Measure Benefit Obligations [Abstract]" } } }, "localname": "DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]", "terseLabel": "Significant Assumptions Used to Measure Costs [Abstract]" } } }, "localname": "DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]", "terseLabel": "Benefit Plans and Other Postretirement Benefits [Abstract]" } } }, "localname": "DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable": { "auth_ref": [ "r479", "r480", "r483", "r484", "r495" ], "lang": { "en-us": { "role": { "documentation": "Disclosures and provisions pertaining to defined benefit pension plans or other postretirement defined benefit plans. The arrangements are generally based on terms and conditions stipulated by the entity, and which contain a promise by the employer to pay certain amounts or awards at designated future dates, including a period after retirement, upon compliance with stipulated requirements. Excludes disclosures pertaining to defined contribution plans.", "label": "Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]", "terseLabel": "Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]" } } }, "localname": "DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]", "terseLabel": "Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]" } } }, "localname": "DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedContributionPlanAdministrativeExpenses": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of administrative expense incurred by defined contribution plan.", "label": "Defined Contribution Plan, Administrative Expense", "terseLabel": "Defined Contribution Plan, Administrative Expense" } } }, "localname": "DefinedContributionPlanAdministrativeExpenses", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepreciationAmortizationAndAccretionNet": { "auth_ref": [ "r130" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.", "label": "Depreciation, Amortization and Accretion, Net", "terseLabel": "Depreciation and amortization" } } }, "localname": "DepreciationAmortizationAndAccretionNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset": { "auth_ref": [ "r74", "r598" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.", "label": "Derivative Asset, Collateral, Obligation to Return Cash, Offset", "terseLabel": "Return Cash Collateral" } } }, "localname": "DerivativeAssetCollateralObligationToReturnCashOffset", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset": { "auth_ref": [ "r74", "r77", "r80", "r598" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, and obligation to return cash collateral under master netting arrangements.", "label": "Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset", "negatedTerseLabel": "Netting" } } }, "localname": "DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeAssets": { "auth_ref": [ "r75", "r76", "r78", "r660" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.", "label": "Derivative Asset", "terseLabel": "Derivative Asset, Net" } } }, "localname": "DerivativeAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeContractTypeDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Financial instrument or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.", "label": "Derivative Contract [Domain]", "terseLabel": "Derivative Contract [Domain]" } } }, "localname": "DerivativeContractTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommodityDerivativesDetails", "http://www.xcelenergy.com/role/InterestRateDerivativesDetails", "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails", "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DerivativeFairValueOfDerivativeAsset": { "auth_ref": [ "r73", "r78", "r79", "r610", "r737" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.", "label": "Derivative Asset, Fair Value, Gross Asset", "terseLabel": "Derivative Asset, Gross" } } }, "localname": "DerivativeFairValueOfDerivativeAsset", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeFairValueOfDerivativeLiability": { "auth_ref": [ "r73", "r78", "r79", "r610", "r737" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.", "label": "Derivative Liability, Fair Value, Gross Liability", "terseLabel": "Derivative Liability, Gross" } } }, "localname": "DerivativeFairValueOfDerivativeLiability", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeGainLossOnDerivativeNet": { "auth_ref": [ "r609" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.", "label": "Derivative, Gain (Loss) on Derivative, Net", "terseLabel": "Derivative, Gain (Loss) on Derivative, Net" } } }, "localname": "DerivativeGainLossOnDerivativeNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeInstrumentRiskAxis": { "auth_ref": [ "r78", "r608", "r611", "r615", "r619" ], "lang": { "en-us": { "role": { "documentation": "Information by type of derivative contract.", "label": "Derivative Instrument [Axis]", "terseLabel": "Derivative Instrument Risk [Axis]", "verboseLabel": "Derivative Instrument [Axis]" } } }, "localname": "DerivativeInstrumentRiskAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommodityDerivativesDetails", "http://www.xcelenergy.com/role/InterestRateDerivativesDetails", "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails", "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeInstrumentsAndHedges": { "auth_ref": [ "r71" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 7.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Carrying amount as of the balance sheet date of the asset arising from derivative instruments and hedging activities, which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer.", "label": "Derivative Instruments and Hedges, Assets", "terseLabel": "Derivative instruments" } } }, "localname": "DerivativeInstrumentsAndHedges", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeInstrumentsAndHedgesLiabilities": { "auth_ref": [ "r59" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 11.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.", "label": "Derivative Instruments and Hedges, Liabilities", "verboseLabel": "Derivative instruments" } } }, "localname": "DerivativeInstrumentsAndHedgesLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeInstrumentsAndHedgesLiabilitiesNoncurrent": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 5.0, "parentTag": "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Fair value of liability arising from contracts that meet the criteria of being accounted for as derivative instruments, financial instrument or contract used to mitigate a specified risk (hedge), energy marketing activities (trading activities), expected to be settled after one year or beyond the normal operating cycle, if longer. Examples of energy marketing activities include, but are not limited to, trading of electricity, coal, natural gas and oil using financial instruments, including, but not limited to, forward contracts, options and swaps.", "label": "Derivative Instruments and Hedges, Liabilities, Noncurrent", "terseLabel": "Derivative instruments" } } }, "localname": "DerivativeInstrumentsAndHedgesLiabilitiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeInstrumentsAndHedgesNoncurrent": { "auth_ref": [ "r53" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 5.0, "parentTag": "nspm_OtherAssetsExcludingPropertyPlantAndEquipment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Carrying amount as of the balance sheet date of the assets arising from derivative contracts and hedging activities, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer.", "label": "Derivative Instruments and Hedges, Noncurrent", "terseLabel": "Derivative instruments" } } }, "localname": "DerivativeInstrumentsAndHedgesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis": { "auth_ref": [ "r604", "r608", "r615" ], "lang": { "en-us": { "role": { "documentation": "Information by type of hedging relationship.", "label": "Hedging Relationship [Axis]", "terseLabel": "Hedging Relationship [Axis]" } } }, "localname": "DerivativeInstrumentsGainLossByHedgingRelationshipAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet": { "auth_ref": [ "r614", "r618" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.", "label": "Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net", "negatedLabel": "Pre-tax (gains) losses reclassified into income during the period from accumulated other comprehensive loss" } } }, "localname": "DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeLiabilities": { "auth_ref": [ "r75", "r76", "r78", "r660" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.", "label": "Derivative Liability", "terseLabel": "Derivative Liability, Net" } } }, "localname": "DerivativeLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset": { "auth_ref": [ "r74", "r598" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities.", "label": "Derivative Liability, Collateral, Right to Reclaim Cash, Offset", "terseLabel": "Reclaim Cash Collateral" } } }, "localname": "DerivativeLiabilityCollateralRightToReclaimCashOffset", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset": { "auth_ref": [ "r74", "r77", "r80", "r598" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, and right to receive cash collateral under master netting arrangements.", "label": "Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset", "negatedTerseLabel": "Netting" } } }, "localname": "DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Derivative [Line Items]", "terseLabel": "Derivative [Line Items]" } } }, "localname": "DerivativeLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommodityDerivativesDetails", "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails", "http://www.xcelenergy.com/role/InterestRateDerivativesDetails", "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeNonmonetaryNotionalAmount": { "auth_ref": [ "r377", "r387", "r600", "r602", "r630" ], "lang": { "en-us": { "role": { "documentation": "Nominal number of units used to calculate payment on derivative.", "label": "Derivative, Nonmonetary Notional Amount", "terseLabel": "Notional amount" } } }, "localname": "DerivativeNonmonetaryNotionalAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommodityDerivativesDetails" ], "xbrltype": "decimalItemType" }, "us-gaap_DerivativeTable": { "auth_ref": [ "r599", "r601", "r602", "r604", "r606", "r613", "r615", "r622", "r624", "r627", "r630" ], "lang": { "en-us": { "role": { "documentation": "Schedule that describes and identifies a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.", "label": "Derivative [Table]", "terseLabel": "Derivative [Table]" } } }, "localname": "DerivativeTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommodityDerivativesDetails", "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails", "http://www.xcelenergy.com/role/InterestRateDerivativesDetails", "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativesFairValueLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Derivatives, Fair Value [Line Items]", "terseLabel": "Derivatives, Fair Value [Line Items]" } } }, "localname": "DerivativesFairValueLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativesPolicyTextBlock": { "auth_ref": [ "r151", "r599", "r601", "r604", "r606", "r623" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for its derivative instruments and hedging activities.", "label": "Derivatives, Policy [Policy Text Block]", "terseLabel": "Derivative Instruments" } } }, "localname": "DerivativesPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_DesignatedAsHedgingInstrumentMember": { "auth_ref": [ "r604" ], "lang": { "en-us": { "role": { "documentation": "Derivative instrument designated as hedging instrument under Generally Accepted Accounting Principles (GAAP).", "label": "Designated as Hedging Instrument [Member]", "terseLabel": "Designated as Hedging Instrument" } } }, "localname": "DesignatedAsHedgingInstrumentMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DisaggregationOfRevenueLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Disaggregation of Revenue [Line Items]", "terseLabel": "Disaggregation of Revenue [Line Items]" } } }, "localname": "DisaggregationOfRevenueLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DisaggregationOfRevenueTable": { "auth_ref": [ "r403", "r405", "r406", "r407", "r408", "r409", "r410", "r411" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.", "label": "Disaggregation of Revenue [Table]", "terseLabel": "Disaggregation of Revenue [Table]" } } }, "localname": "DisaggregationOfRevenueTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DisaggregationOfRevenueTableTextBlock": { "auth_ref": [ "r403" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.", "label": "Disaggregation of Revenue [Table Text Block]", "terseLabel": "Disaggregation of Revenue" } } }, "localname": "DisaggregationOfRevenueTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_DividendsCommonStock": { "auth_ref": [ "r393", "r797" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).", "label": "Dividends, Common Stock", "negatedTerseLabel": "Dividends declared to parent" } } }, "localname": "DividendsCommonStock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsPayableCurrent": { "auth_ref": [ "r17", "r59" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 6.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Dividends Payable, Current", "terseLabel": "Dividends payable to parent" } } }, "localname": "DividendsPayableCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DueFromAffiliateCurrent": { "auth_ref": [ "r67", "r711", "r713", "r718" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 4.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due within 1 year (or 1 business cycle).", "label": "Due from Affiliate, Current", "terseLabel": "Accounts receivable from affiliates" } } }, "localname": "DueFromAffiliateCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DueFromRelatedPartiesCurrent": { "auth_ref": [ "r12", "r21", "r33", "r150", "r339", "r341", "r342", "r348", "r349", "r350", "r711" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).", "label": "Due from Related Parties, Current", "terseLabel": "Accounts receivable" } } }, "localname": "DueFromRelatedPartiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DueToAffiliateCurrent": { "auth_ref": [ "r25", "r150", "r711", "r834" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 7.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Due to Affiliate, Current", "terseLabel": "Accounts payable to affiliates" } } }, "localname": "DueToAffiliateCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_DueToRelatedPartiesCurrent": { "auth_ref": [ "r54", "r150", "r339", "r341", "r342", "r348", "r349", "r350", "r711" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).", "label": "Due to Related Parties, Current", "terseLabel": "Accounts payable" } } }, "localname": "DueToRelatedPartiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EffectiveIncomeTaxRateContinuingOperations": { "auth_ref": [ "r535" ], "lang": { "en-us": { "role": { "documentation": "Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.", "label": "Effective Income Tax Rate Reconciliation, Percent", "terseLabel": "Effective income tax rate" } } }, "localname": "EffectiveIncomeTaxRateContinuingOperations", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": { "auth_ref": [ "r148", "r535", "r571" ], "lang": { "en-us": { "role": { "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).", "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent", "terseLabel": "Federal statutory rate" } } }, "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments": { "auth_ref": [ "r535", "r571" ], "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.", "label": "Effective Income Tax Rate Reconciliation, Other Adjustments, Percent", "terseLabel": "Other, net" } } }, "localname": "EffectiveIncomeTaxRateReconciliationOtherAdjustments", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage of the difference, between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, that is attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority interest income (expense), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, change in enacted tax rate, prior year income taxes, change in deferred tax asset valuation allowance, and other adjustments.", "label": "Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent", "terseLabel": "Other tax credits, net NOL & tax credit allowances" } } }, "localname": "EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes": { "auth_ref": [ "r535", "r571" ], "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).", "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent", "terseLabel": "State income tax on pretax income, net of federal tax effect" } } }, "localname": "EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits": { "auth_ref": [ "r535", "r571" ], "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.", "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Percent", "negatedTerseLabel": "Wind PTCs" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTaxCredits", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "percentItemType" }, "us-gaap_ElectricDistributionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "System used for the primary purpose of distributing electricity to the consumer.", "label": "Electric Distribution [Member]", "terseLabel": "Electric Plant Electric Distribution" } } }, "localname": "ElectricDistributionMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ElectricGenerationEquipmentMember": { "auth_ref": [ "r290" ], "lang": { "en-us": { "role": { "documentation": "Equipment used for the primary purpose of generating electricity to be distributed to the consumer.", "label": "Electric Generation Equipment [Member]", "terseLabel": "Electric plant" } } }, "localname": "ElectricGenerationEquipmentMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ElectricityUsRegulatedMember": { "auth_ref": [ "r405" ], "lang": { "en-us": { "role": { "documentation": "Generation, transmission and distribution of electric energy regulated by government or agency in United States (US).", "label": "Electricity, US Regulated [Member]", "terseLabel": "Electricity, US Regulated" } } }, "localname": "ElectricityUsRegulatedMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EmissionCreditsOrAllowancesPolicy": { "auth_ref": [ "r626" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for emission credits or allowances. Such accounting policy has generally been based on an inventory or intangible asset model.", "label": "Emission Credits or Allowances, Policy [Policy Text Block]", "terseLabel": "Emission Allowances" } } }, "localname": "EmissionCreditsOrAllowancesPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_EnvironmentalRemediationSiteAxis": { "auth_ref": [ "r305", "r306", "r307", "r308", "r327" ], "lang": { "en-us": { "role": { "documentation": "Information by location or named area designated for environmental remediation.", "label": "Environmental Remediation Site [Axis]", "terseLabel": "Environmental Remediation Site [Axis]" } } }, "localname": "EnvironmentalRemediationSiteAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMGPSitesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EnvironmentalRemediationSiteDomain": { "auth_ref": [ "r305" ], "lang": { "en-us": { "role": { "documentation": "Location or named area designated for environmental remediation.", "label": "Environmental Remediation Site [Domain]", "terseLabel": "Environmental Remediation Site [Domain]" } } }, "localname": "EnvironmentalRemediationSiteDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMGPSitesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EnvironmentalRestorationCostsMember": { "auth_ref": [ "r873" ], "lang": { "en-us": { "role": { "documentation": "Rate action of a regulator resulting in capitalization or accrual of costs associated with site remediation or other environmental exit costs that may occur on the sale, disposal, abandonment or decommissioning of a property.", "label": "Environmental Restoration Costs [Member]", "terseLabel": "Environmental Remediation Costs" } } }, "localname": "EnvironmentalRestorationCostsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r2", "r98", "r99", "r100", "r162", "r163", "r164", "r169", "r178", "r180", "r191", "r269", "r388", "r393", "r521", "r522", "r523", "r561", "r562", "r640", "r679", "r680", "r681", "r682", "r683", "r685", "r822", "r823", "r824", "r916" ], "lang": { "en-us": { "role": { "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.", "label": "Equity Component [Domain]", "terseLabel": "Equity Component [Domain]" } } }, "localname": "EquityComponentDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/AccountingPronouncementsRecentlyAdoptedDetails", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY", "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember": { "auth_ref": [ "r7", "r146", "r265", "r666" ], "lang": { "en-us": { "role": { "documentation": "Nonconsolidated equity method investee or group of nonconsolidated investees. Excludes information consolidated by reporting entity.", "label": "Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]", "terseLabel": "Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]" } } }, "localname": "EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesVariableInterestEntitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquitySecuritiesMember": { "auth_ref": [ "r22", "r28", "r261", "r800", "r848", "r849", "r850" ], "lang": { "en-us": { "role": { "documentation": "Ownership interest or right to acquire or dispose of ownership interest in corporations and other legal entities for which ownership interest is represented by shares of common or preferred stock, convertible securities, stock rights, or stock warrants.", "label": "Equity Securities [Member]", "terseLabel": "Domestic and international equity securities", "verboseLabel": "Equity Securities" } } }, "localname": "EquitySecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EstimateOfFairValueFairValueDisclosureMember": { "auth_ref": [ "r366", "r381", "r382", "r660" ], "lang": { "en-us": { "role": { "documentation": "Measured as an estimate of fair value.", "label": "Estimate of Fair Value Measurement [Member]", "terseLabel": "Estimate of Fair Value Measurement [Member]", "verboseLabel": "Fair Value" } } }, "localname": "EstimateOfFairValueFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ExternalCreditRatingInvestmentGradeMember": { "auth_ref": [ "r331", "r621" ], "lang": { "en-us": { "role": { "documentation": "External credit-rating that could be used to describe the current status of the payment and performance risk of credit derivatives and guarantee obligations that connote investment grade.", "label": "External Credit Rating, Investment Grade [Member]", "terseLabel": "External Credit Rating, Investment Grade" } } }, "localname": "ExternalCreditRatingInvestmentGradeMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ExternalCreditRatingNonInvestmentGradeMember": { "auth_ref": [ "r331", "r621" ], "lang": { "en-us": { "role": { "documentation": "External credit-rating that could be used to describe the current status of the payment and performance risk of credit derivatives and guarantee obligations that connote non-investment grade.", "label": "External Credit Rating, Non Investment Grade [Member]", "terseLabel": "External Credit Rating, Non Investment Grade" } } }, "localname": "ExternalCreditRatingNonInvestmentGradeMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]", "terseLabel": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r644", "r645", "r646", "r654" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis.", "label": "Fair Value, Recurring and Nonrecurring [Table]", "terseLabel": "Fair Value, Recurring and Nonrecurring [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByBalanceSheetGroupingTextBlock": { "auth_ref": [ "r644", "r661" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.", "label": "Fair Value, by Balance Sheet Grouping [Table Text Block]", "terseLabel": "Carrying Amount and Fair Value of Long-term Debt" } } }, "localname": "FairValueByBalanceSheetGroupingTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r366", "r381", "r382", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r495", "r645", "r727", "r728", "r729" ], "lang": { "en-us": { "role": { "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.", "label": "Fair Value Hierarchy and NAV [Axis]", "terseLabel": "Fair Value Hierarchy and NAV [Axis]" } } }, "localname": "FairValueByFairValueHierarchyLevelAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementBasisAxis": { "auth_ref": [ "r366", "r381", "r382", "r644", "r655" ], "lang": { "en-us": { "role": { "documentation": "Information by measurement basis.", "label": "Measurement Basis [Axis]", "terseLabel": "Measurement Basis [Axis]", "verboseLabel": "Measurement Basis [Axis]" } } }, "localname": "FairValueByMeasurementBasisAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementFrequencyAxis": { "auth_ref": [ "r644", "r645", "r647", "r648", "r656" ], "lang": { "en-us": { "role": { "documentation": "Information by measurement frequency.", "label": "Measurement Frequency [Axis]", "terseLabel": "Measurement Frequency [Axis]" } } }, "localname": "FairValueByMeasurementFrequencyAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosureItemAmountsDomain": { "auth_ref": [ "r366", "r381", "r382" ], "lang": { "en-us": { "role": { "documentation": "Measurement basis, for example, but not limited to, reported value, fair value, portion at fair value, portion at other than fair value.", "label": "Fair Value Measurement [Domain]", "terseLabel": "Fair Value Measurement [Domain]" } } }, "localname": "FairValueDisclosureItemAmountsDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueDisclosuresAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Fair Value Disclosures [Abstract]", "terseLabel": "Fair Value Disclosures [Abstract]" } } }, "localname": "FairValueDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r652" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.", "label": "Fair Value Disclosures [Text Block]", "terseLabel": "Fair Value Disclosures [Text Block]", "verboseLabel": "Fair Value of Financial Assets and Liabilities" } } }, "localname": "FairValueDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilities", "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueHedgesAtFairValueNet": { "auth_ref": [ "r598" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Net fair value of all derivative instruments designated as fair value hedging instruments.", "label": "Fair Value Hedges, Net", "terseLabel": "Fair Value Hedges, Net" } } }, "localname": "FairValueHedgesAtFairValueNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r366", "r447", "r449", "r454", "r495", "r645", "r727" ], "lang": { "en-us": { "role": { "documentation": "Quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.", "label": "Fair Value, Inputs, Level 1 [Member]", "terseLabel": "Level\u00a01", "verboseLabel": "Level 1" } } }, "localname": "FairValueInputsLevel1Member", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel2Member": { "auth_ref": [ "r366", "r381", "r382", "r447", "r449", "r454", "r495", "r645", "r728" ], "lang": { "en-us": { "role": { "documentation": "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets.", "label": "Fair Value, Inputs, Level 2 [Member]", "terseLabel": "Level\u00a02", "verboseLabel": "Level 2" } } }, "localname": "FairValueInputsLevel2Member", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel3Member": { "auth_ref": [ "r366", "r381", "r382", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r495", "r645", "r729" ], "lang": { "en-us": { "role": { "documentation": "Unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Inputs, Level 3 [Member]", "terseLabel": "Level\u00a03", "verboseLabel": "Level 3" } } }, "localname": "FairValueInputsLevel3Member", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementFrequencyDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Measurement frequency.", "label": "Measurement Frequency [Domain]", "terseLabel": "Measurement Frequency [Domain]" } } }, "localname": "FairValueMeasurementFrequencyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": { "auth_ref": [ "r366", "r381", "r382", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r495", "r727", "r728", "r729" ], "lang": { "en-us": { "role": { "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.", "label": "Fair Value Hierarchy and NAV [Domain]", "terseLabel": "Fair Value Hierarchy and NAV [Domain]", "verboseLabel": "Fair Value Hierarchy and NAV [Domain]" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsNonrecurringMember": { "auth_ref": [ "r644", "r645", "r647", "r648", "r651", "r656" ], "lang": { "en-us": { "role": { "documentation": "Infrequent fair value measurement. Includes, but is not limited to, fair value adjustment for impairment of asset, liability or equity, not frequently measured at fair value.", "label": "Fair Value, Nonrecurring [Member]", "terseLabel": "Fair Value, Measurements, Nonrecurring" } } }, "localname": "FairValueMeasurementsNonrecurringMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsRecurringMember": { "auth_ref": [ "r652", "r656" ], "lang": { "en-us": { "role": { "documentation": "Frequent fair value measurement. Includes, but is not limited to, fair value adjustment for impairment of asset, liability or equity, frequently measured at fair value.", "label": "Fair Value, Recurring [Member]", "terseLabel": "Fair Value, Measurements, Recurring", "verboseLabel": "Fair Value Measured on a Recurring Basis" } } }, "localname": "FairValueMeasurementsRecurringMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]", "terseLabel": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]" } } }, "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings": { "auth_ref": [ "r649", "r653" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3).", "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings", "terseLabel": "Gains (losses) recognized in earnings" } } }, "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases": { "auth_ref": [ "r650", "r653" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of purchases of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases", "terseLabel": "Purchases" } } }, "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements": { "auth_ref": [ "r650", "r653" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability, measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements", "negatedLabel": "Settlements" } } }, "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersNet": { "auth_ref": [ "r653" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into (out of) level 3 of the fair value hierarchy.", "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers, Net", "terseLabel": "Transfers Between Levels, Net" } } }, "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs": { "auth_ref": [ "r644", "r653" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs", "periodEndLabel": "Balance at end of period", "periodStartLabel": "Balance at beginning of period" } } }, "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueOfFinancialInstrumentsPolicy": { "auth_ref": [ "r657", "r659" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for determining the fair value of financial instruments.", "label": "Fair Value of Financial Instruments, Policy [Policy Text Block]", "terseLabel": "Fair Value Measurements" } } }, "localname": "FairValueOfFinancialInstrumentsPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable": { "auth_ref": [ "r607", "r613", "r625" ], "lang": { "en-us": { "role": { "documentation": "Schedule that discloses the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.", "label": "Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]", "terseLabel": "Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]" } } }, "localname": "FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancialInstrumentAxis": { "auth_ref": [ "r259", "r260", "r262", "r263", "r264", "r275", "r277", "r278", "r279", "r280", "r282", "r283", "r284", "r285", "r377", "r387", "r630", "r724", "r725", "r726", "r727", "r728", "r729", "r730", "r731", "r732", "r733", "r734", "r735", "r736", "r738", "r739", "r740", "r741", "r742", "r743", "r744", "r745", "r746", "r747", "r748", "r749", "r750", "r751", "r752", "r753", "r754", "r889", "r890", "r891", "r892", "r893", "r894", "r895" ], "lang": { "en-us": { "role": { "documentation": "Information by type of financial instrument.", "label": "Financial Instrument [Axis]", "terseLabel": "Financial Instrument [Axis]" } } }, "localname": "FinancialInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]", "terseLabel": "Financial Liabilities, Balance Sheet Groupings [Abstract]" } } }, "localname": "FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofLongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_GainLossRelatedToLitigationSettlement": { "auth_ref": [ "r318" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.", "label": "Gain (Loss) Related to Litigation Settlement", "terseLabel": "Gain (Loss) Related to Litigation Settlement" } } }, "localname": "GainLossRelatedToLitigationSettlement", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesShercoDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesWestmorelandArbitrationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GasTransmissionEquipmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long lived, depreciable assets used for the primary purpose of transmitting and distributing gas product to the consumer.", "label": "Gas Transmission Equipment [Member]", "terseLabel": "Natural gas plant" } } }, "localname": "GasTransmissionEquipmentMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_GuaranteesAndProductWarrantiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Guarantees and Product Warranties [Abstract]" } } }, "localname": "GuaranteesAndProductWarrantiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_HedgingDesignationAxis": { "auth_ref": [ "r604", "r620" ], "lang": { "en-us": { "role": { "documentation": "Information by designation of purpose of derivative instrument.", "label": "Hedging Designation [Axis]", "terseLabel": "Hedging Designation [Axis]" } } }, "localname": "HedgingDesignationAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_HedgingDesignationDomain": { "auth_ref": [ "r604" ], "lang": { "en-us": { "role": { "documentation": "Designation of purpose of derivative instrument.", "label": "Hedging Designation [Domain]", "terseLabel": "Hedging Designation [Domain]" } } }, "localname": "HedgingDesignationDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_HedgingRelationshipDomain": { "auth_ref": [ "r604" ], "lang": { "en-us": { "role": { "documentation": "Nature or intent of a hedge.", "label": "Hedging Relationship [Domain]", "terseLabel": "Hedging Relationship [Domain]" } } }, "localname": "HedgingRelationshipDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": { "auth_ref": [ "r104", "r214", "r220", "r224", "r227", "r230", "r777", "r785", "r790", "r813" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 2.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.", "label": "Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest", "totalLabel": "Income before income taxes" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeStatementAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Income Statement [Abstract]", "terseLabel": "Income Statement [Abstract]" } } }, "localname": "IncomeStatementAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxAuthorityAxis": { "auth_ref": [ "r540" ], "lang": { "en-us": { "role": { "documentation": "Information by tax jurisdiction.", "label": "Income Tax Authority [Axis]", "terseLabel": "Income Tax Authority [Axis]" } } }, "localname": "IncomeTaxAuthorityAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxAuthorityDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Agency, division or body classification that levies income taxes, examines tax returns for compliance, or grants exemptions from or makes other decisions pertaining to income taxes.", "label": "Income Tax Authority [Domain]", "terseLabel": "Income Tax Authority [Domain]" } } }, "localname": "IncomeTaxAuthorityDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeTaxDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Income Tax Disclosure [Abstract]", "terseLabel": "Income Tax Disclosure [Abstract]" } } }, "localname": "IncomeTaxDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureTextBlock": { "auth_ref": [ "r148", "r536", "r547", "r552", "r566", "r572", "r575", "r576", "r577" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.", "label": "Income Tax Disclosure [Text Block]", "verboseLabel": "Income Taxes" } } }, "localname": "IncomeTaxDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxes" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxExaminationLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Income Tax Examination [Line Items]", "terseLabel": "Income Tax [Line Items]" } } }, "localname": "IncomeTaxExaminationLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxExaminationTable": { "auth_ref": [ "r541" ], "lang": { "en-us": { "role": { "documentation": "A summary of income tax examinations that an enterprise is currently subject to or that have been completed in the current period typically including a description of the examination, the jurisdiction conducting the examination, the tax year(s) under examination, the likelihood of an unfavorable settlement, the range of possible losses, the liability recorded, the Increase or Decrease in the liability from the prior period, and any penalties and interest that have been incurred or accrued.", "label": "Income Tax Examination [Table]", "terseLabel": "Income Tax Examination [Table]" } } }, "localname": "IncomeTaxExaminationTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxExpenseBenefit": { "auth_ref": [ "r149", "r179", "r180", "r212", "r534", "r567", "r573", "r814" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.", "label": "Income Tax Expense (Benefit)", "terseLabel": "Income tax (benefit) expense" } } }, "localname": "IncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/OtherIncomeTaxMatters", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxExpenseBenefitIntraperiodTaxAllocation": { "auth_ref": [ "r567", "r574" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of income tax expense (benefit) for continuing operations, discontinued operations, other comprehensive income, and items charged (credited) directly to shareholders' equity.", "label": "Income Tax Expense (Benefit), Intraperiod Tax Allocation", "terseLabel": "Tax expense allocated to other comprehensive income, adoption of ASC Topic 326, and other" } } }, "localname": "IncomeTaxExpenseBenefitIntraperiodTaxAllocation", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxPolicyTextBlock": { "auth_ref": [ "r97", "r529", "r531", "r547", "r548", "r551", "r558" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.", "label": "Income Tax, Policy [Policy Text Block]", "terseLabel": "Income Taxes" } } }, "localname": "IncomeTaxPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxesPaidNet": { "auth_ref": [ "r134" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.", "label": "Income Taxes Paid, Net", "negatedLabel": "Cash received (paid) for income taxes, net" } } }, "localname": "IncomeTaxesPaidNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables": { "auth_ref": [ "r129" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 15.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables.", "label": "Increase (Decrease) in Accounts and Other Receivables", "negatedLabel": "Accounts receivable" } } }, "localname": "IncreaseDecreaseInAccountsAndOtherReceivables", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccountsPayable": { "auth_ref": [ "r129" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 11.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.", "label": "Increase (Decrease) in Accounts Payable", "verboseLabel": "Accounts payable" } } }, "localname": "IncreaseDecreaseInAccountsPayable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInContractWithCustomerLiability": { "auth_ref": [ "r129", "r756" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable.", "label": "Increase (Decrease) in Contract with Customer, Liability", "verboseLabel": "Accrued unbilled revenues" } } }, "localname": "IncreaseDecreaseInContractWithCustomerLiability", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities": { "auth_ref": [ "r129" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in the aggregate amount of obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.", "label": "Increase (Decrease) in Employee Related Liabilities", "terseLabel": "Pension and other employee benefit obligations" } } }, "localname": "IncreaseDecreaseInEmployeeRelatedLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInInventories": { "auth_ref": [ "r129" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 9.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.", "label": "Increase (Decrease) in Inventories", "negatedLabel": "Inventories" } } }, "localname": "IncreaseDecreaseInInventories", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Increase (Decrease) in Operating Capital [Abstract]", "terseLabel": "Changes in operating assets and liabilities:" } } }, "localname": "IncreaseDecreaseInOperatingCapitalAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInOtherCurrentAssets": { "auth_ref": [ "r129" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in current assets classified as other.", "label": "Increase (Decrease) in Other Current Assets", "negatedLabel": "Other current assets" } } }, "localname": "IncreaseDecreaseInOtherCurrentAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOtherCurrentLiabilities": { "auth_ref": [ "r129" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in current liabilities classified as other.", "label": "Increase (Decrease) in Other Current Liabilities", "verboseLabel": "Other current liabilities" } } }, "localname": "IncreaseDecreaseInOtherCurrentLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities": { "auth_ref": [ "r129" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the increase (decrease) of regulatory assets and liabilities combined.", "label": "Increase (Decrease) in Regulatory Assets and Liabilities", "negatedLabel": "Net regulatory assets and liabilities" } } }, "localname": "IncreaseDecreaseInRegulatoryAssetsAndLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInStockholdersEquityRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Increase (Decrease) in Stockholders' Equity [Roll Forward]", "terseLabel": "Increase (Decrease) in Stockholder's Equity" } } }, "localname": "IncreaseDecreaseInStockholdersEquityRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "stringItemType" }, "us-gaap_IndustryOfCounterpartyDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The industry of the party or parties having primary responsibility to meet the obligations of the arrangement with the entity.", "label": "Industry of Counterparty [Domain]", "terseLabel": "Industry of Counterparty [Domain]" } } }, "localname": "IndustryOfCounterpartyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InsuranceRelatedAssessmentsMember": { "auth_ref": [ "r295" ], "lang": { "en-us": { "role": { "documentation": "Any funding mandated by statute or regulatory authority that is related directly or indirectly to underwriting activities, including pools for self-insurance and excluding premium taxes and income taxes. The funds derived from the assessments generally enable a government guarantor to pay insurance claims in the event that the underwriting insurer is insolvent or otherwise unable to meet its payment obligations.", "label": "Insurance-related Assessments [Member]", "terseLabel": "Nuclear Insurance" } } }, "localname": "InsuranceRelatedAssessmentsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InterestAndDebtExpense": { "auth_ref": [ "r688" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 2.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Interest and debt related expenses associated with nonoperating financing activities of the entity.", "label": "Interest and Debt Expense", "terseLabel": "Total interest charges and financing costs", "totalLabel": "Total interest charges and financing costs" } } }, "localname": "InterestAndDebtExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpense": { "auth_ref": [ "r102", "r208", "r687", "r691", "r789" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 1.0, "parentTag": "us-gaap_InterestAndDebtExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of the cost of borrowed funds accounted for as interest expense.", "label": "Interest Expense", "terseLabel": "Interest charges \u2014 includes other financing costs of $8, $8 and $7, respectively" } } }, "localname": "InterestExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpenseAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Interest Expense [Abstract]", "terseLabel": "Interest charges and financing costs" } } }, "localname": "InterestExpenseAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "stringItemType" }, "us-gaap_InterestExpenseRelatedParty": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of interest expense incurred on a debt or other obligation to related party.", "label": "Interest Expense, Related Party", "terseLabel": "Interest expense" } } }, "localname": "InterestExpenseRelatedParty", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestPaidNet": { "auth_ref": [ "r124", "r126", "r134" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.", "label": "Interest Paid, Excluding Capitalized Interest, Operating Activities", "negatedLabel": "Cash paid for interest (net of amounts capitalized)" } } }, "localname": "InterestPaidNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestPayableCurrent": { "auth_ref": [ "r17", "r18", "r59" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Interest Payable, Current", "terseLabel": "Accrued interest" } } }, "localname": "InterestPayableCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet": { "auth_ref": [ "r629" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.", "label": "Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net", "terseLabel": "Amount of accumulated other comprehensive gains (losses) related to interest rate derivatives expected to be reclassified into earnings within the next twelve months" } } }, "localname": "InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/InterestRateDerivativesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestRateContractMember": { "auth_ref": [ "r78", "r447", "r616" ], "lang": { "en-us": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to the right to receive or pay a sum of money at a given interest rate.", "label": "Interest Rate Contract [Member]", "terseLabel": "Interest Rate Contract" } } }, "localname": "InterestRateContractMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InterestRateDerivativesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Interest Rate Derivatives [Abstract]", "terseLabel": "Interest Rate Derivatives [Abstract]" } } }, "localname": "InterestRateDerivativesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/InterestRateDerivativesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InterestRateSwapMember": { "auth_ref": [ "r616" ], "lang": { "en-us": { "role": { "documentation": "Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period.", "label": "Interest Rate Swap [Member]", "terseLabel": "Interest Rate Swap [Member]" } } }, "localname": "InterestRateSwapMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/InterestRateDerivativesDetails", "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InternalInvestmentGradeMember": { "auth_ref": [ "r280" ], "lang": { "en-us": { "role": { "documentation": "Credit rating classification developed by the entity in which the probability of default is low and full and timely repayments are expected.", "label": "Internal Investment Grade [Member]", "terseLabel": "Internal Investment Grade [Member]" } } }, "localname": "InternalInvestmentGradeMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ConsiderationofCreditRiskandConcentrationsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IntersegmentEliminationMember": { "auth_ref": [ "r206", "r219", "r220", "r221", "r222", "r224", "r226", "r230" ], "lang": { "en-us": { "role": { "documentation": "Eliminating entries used in operating segment consolidation.", "label": "Intersegment Eliminations [Member]", "terseLabel": "Intersegment Eliminations" } } }, "localname": "IntersegmentEliminationMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InventoryNet": { "auth_ref": [ "r10", "r69", "r721" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 6.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.", "label": "Inventory, Net", "terseLabel": "Inventories" } } }, "localname": "InventoryNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_InventoryPolicyTextBlock": { "auth_ref": [ "r19", "r70", "r141", "r187", "r286", "r287", "r288", "r757" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.", "label": "Inventory, Policy [Policy Text Block]", "terseLabel": "Inventory" } } }, "localname": "InventoryPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_InvestmentTypeAxis": { "auth_ref": [ "r836", "r837", "r838", "r839", "r840", "r841", "r842", "r843", "r844", "r845", "r846", "r847", "r848", "r849", "r850" ], "lang": { "en-us": { "role": { "documentation": "Information by type of investments.", "label": "Investment Type [Axis]", "terseLabel": "Investment Type [Axis]" } } }, "localname": "InvestmentTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentTypeCategorizationMember": { "auth_ref": [ "r836", "r837", "r838", "r839", "r840", "r841", "r842", "r843", "r844", "r845", "r846", "r847", "r848", "r849", "r850" ], "lang": { "en-us": { "role": { "documentation": "Asset obtained to generate income or appreciate in value.", "label": "Investments [Domain]", "terseLabel": "Investments [Domain]" } } }, "localname": "InvestmentTypeCategorizationMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Investments [Abstract]", "terseLabel": "Investments [Abstract]" } } }, "localname": "InvestmentsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentsAndOtherNoncurrentAssets": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 2.0, "parentTag": "nspm_OtherAssetsExcludingPropertyPlantAndEquipment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investments, and noncurrent assets classified as other.", "label": "Investments and Other Noncurrent Assets", "verboseLabel": "Nuclear decommissioning fund and other investments" } } }, "localname": "InvestmentsAndOtherNoncurrentAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.", "label": "Investments Classified by Contractual Maturity Date [Table Text Block]", "terseLabel": "Final Contractual Maturity Dates of Debt Securities in the Nuclear Decommissioning Fund by Asset Class" } } }, "localname": "InvestmentsClassifiedByContractualMaturityDateTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_JointlyOwnedElectricityGenerationPlantMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Jointly owned plant in connection with generation of electricity, excluding nuclear.", "label": "Jointly Owned Electricity Generation Plant [Member]", "terseLabel": "Electric Generation" } } }, "localname": "JointlyOwnedElectricityGenerationPlantMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "us-gaap_JointlyOwnedElectricityTransmissionAndDistributionSystemMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Jointly owned plant in connection with transmission and distribution of electricity.", "label": "Jointly Owned Electricity Transmission and Distribution System [Member]", "terseLabel": "Electric Transmission" } } }, "localname": "JointlyOwnedElectricityTransmissionAndDistributionSystemMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "us-gaap_JointlyOwnedUtilityPlantAxis": { "auth_ref": [ "r870" ], "lang": { "en-us": { "role": { "documentation": "Information by type of jointly owned utility plant.", "label": "Jointly Owned Utility Plant [Axis]", "terseLabel": "Jointly Owned Utility Plant [Axis]" } } }, "localname": "JointlyOwnedUtilityPlantAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "stringItemType" }, "us-gaap_JointlyOwnedUtilityPlantDomain": { "auth_ref": [ "r869" ], "lang": { "en-us": { "role": { "documentation": "Types of a jointly owned utility plant.", "label": "Jointly Owned Utility Plant [Domain]", "terseLabel": "Jointly Owned Utility Plant [Domain]" } } }, "localname": "JointlyOwnedUtilityPlantDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "domainItemType" }, "us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService": { "auth_ref": [ "r870" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The period end amount owned by the reporting utility of a jointly owned utility plant in service.", "label": "Jointly Owned Utility Plant, Gross Ownership Amount of Plant in Service", "terseLabel": "Plant in Service" } } }, "localname": "JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_JointlyOwnedUtilityPlantInterestsLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Jointly Owned Utility Plant Interests [Line Items]", "terseLabel": "Jointly Owned Utility Plant Interests [Line Items]" } } }, "localname": "JointlyOwnedUtilityPlantInterestsLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "stringItemType" }, "us-gaap_JointlyOwnedUtilityPlantInterestsTable": { "auth_ref": [ "r870" ], "lang": { "en-us": { "role": { "documentation": "Detailed information about jointly owned utility plants.", "label": "Jointly Owned Utility Plant Interests [Table]", "terseLabel": "Jointly Owned Utility Plant Interests [Table]" } } }, "localname": "JointlyOwnedUtilityPlantInterestsTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "stringItemType" }, "us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress": { "auth_ref": [ "r870" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The period end amount of construction work in progress at a jointly owned electricity generation plant.", "label": "Jointly Owned Utility Plant, Ownership Amount of Construction Work in Progress", "terseLabel": "CWIP" } } }, "localname": "JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation": { "auth_ref": [ "r870" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The period end amount of accumulated depreciation in a jointly owned electricity generation plant.", "label": "Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation", "terseLabel": "Accumulated Depreciation" } } }, "localname": "JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare": { "auth_ref": [ "r870" ], "lang": { "en-us": { "role": { "documentation": "The proportionate share of interest (percent) in a jointly owned utility plant.", "label": "Jointly Owned Utility Plant, Proportionate Ownership Share", "terseLabel": "Percent Owned" } } }, "localname": "JointlyOwnedUtilityPlantProportionateOwnershipShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipmentJointOwnershipDetails" ], "xbrltype": "percentItemType" }, "us-gaap_LeaseCostAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Lease, Cost [Abstract]", "terseLabel": "Lease, Cost [Abstract]" } } }, "localname": "LeaseCostAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LeaseCostTableTextBlock": { "auth_ref": [ "r703" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.", "label": "Lease, Cost [Table Text Block]", "terseLabel": "Lease, Cost [Table Text Block]" } } }, "localname": "LeaseCostTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_LesseeLeaseDescriptionLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Lessee, Lease, Description [Line Items]", "terseLabel": "Lessee, Lease, Description [Line Items]" } } }, "localname": "LesseeLeaseDescriptionLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LesseeLeaseDescriptionTable": { "auth_ref": [ "r698" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about lessee's leases.", "label": "Lessee, Lease, Description [Table]", "terseLabel": "Lessee, Lease, Description [Table]" } } }, "localname": "LesseeLeaseDescriptionTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock": { "auth_ref": [ "r704" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.", "label": "Lessee, Operating Lease, Liability, Maturity [Table Text Block]", "terseLabel": "Lessee, Operating Lease, Liability, Maturity [Table Text Block]" } } }, "localname": "LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue": { "auth_ref": [ "r704" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease.", "label": "Lessee, Operating Lease, Liability, to be Paid", "terseLabel": "Total minimum obligation" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive": { "auth_ref": [ "r704" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, after Year Five", "terseLabel": "Thereafter" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths": { "auth_ref": [ "r704" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year One", "terseLabel": "2022" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive": { "auth_ref": [ "r704" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year Five", "terseLabel": "2026" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFive", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour": { "auth_ref": [ "r704" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year Four", "terseLabel": "2025" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFour", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree": { "auth_ref": [ "r704" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year Three", "terseLabel": "2024" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearThree", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo": { "auth_ref": [ "r704" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year Two", "terseLabel": "2023" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount": { "auth_ref": [ "r704" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.", "label": "Lessee, Operating Lease, Liability, Undiscounted Excess Amount", "negatedTerseLabel": "Interest component of obligation" } } }, "localname": "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseTermOfContract": { "auth_ref": [ "r697" ], "lang": { "en-us": { "role": { "documentation": "Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Lessee, Operating Lease, Term of Contract", "terseLabel": "Maximum Length - Short-Term Leases" } } }, "localname": "LesseeOperatingLeaseTermOfContract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "durationItemType" }, "us-gaap_LetterOfCreditMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A document typically issued by a financial institution which acts as a guarantee of payment to a beneficiary, or as the source of payment for a specific transaction (for example, wiring funds to a foreign exporter if and when specified merchandise is accepted pursuant to the terms of the letter of credit).", "label": "Letter of Credit [Member]", "terseLabel": "Letter of Credit [Member]", "verboseLabel": "Letter of Credit" } } }, "localname": "LetterOfCreditMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r40", "r146", "r265", "r666", "r721", "r781", "r806" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.", "label": "Liabilities and Equity", "totalLabel": "Total liabilities and equity" } } }, "localname": "LiabilitiesAndStockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities and Equity [Abstract]", "verboseLabel": "Liabilities and Equity" } } }, "localname": "LiabilitiesAndStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesCurrent": { "auth_ref": [ "r60", "r146", "r265", "r336", "r337", "r338", "r341", "r342", "r343", "r345", "r347", "r349", "r350", "r586", "r590", "r591", "r666", "r719", "r720", "r721" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.", "label": "Liabilities, Current", "totalLabel": "Total current liabilities" } } }, "localname": "LiabilitiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities, Current [Abstract]", "verboseLabel": "Current liabilities" } } }, "localname": "LiabilitiesCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities, Other than Long-term Debt, Noncurrent [Abstract]", "terseLabel": "Deferred credits and other liabilities" } } }, "localname": "LiabilitiesOtherThanLongTermDebtNoncurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Aggregated carrying amounts of obligations as of the balance sheet date, excluding long-term debt, incurred as part of the normal operations that are expected to be paid after one year or beyond the normal operating cycle, if longer. Alternate captions include Total Deferred Credits and Other Liabilities.", "label": "Liabilities, Other than Long-term Debt, Noncurrent", "totalLabel": "Total deferred credits and other liabilities" } } }, "localname": "LiabilitiesOtherThanLongtermDebtNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCredit": { "auth_ref": [ "r30", "r780", "r799" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.", "label": "Long-term Line of Credit", "terseLabel": "Direct advances on the credit facility outstanding" } } }, "localname": "LineOfCredit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Line of Credit Facility [Abstract]", "terseLabel": "Line of Credit Facility [Abstract]" } } }, "localname": "LineOfCreditFacilityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityExpirationPeriod": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Line of Credit Facility, Expiration Period", "terseLabel": "Line of Credit Facility, Expiration Period" } } }, "localname": "LineOfCreditFacilityExpirationPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "durationItemType" }, "us-gaap_LineOfCreditFacilityInterestRateDuringPeriod": { "auth_ref": [ "r56" ], "lang": { "en-us": { "role": { "documentation": "The effective interest rate during the reporting period.", "label": "Line of Credit Facility, Interest Rate During Period", "terseLabel": "Line of Credit Facility, Interest Rate During Period" } } }, "localname": "LineOfCreditFacilityInterestRateDuringPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "percentItemType" }, "us-gaap_LineOfCreditFacilityLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Line of Credit Facility [Line Items]", "terseLabel": "Line of Credit Facility [Line Items]" } } }, "localname": "LineOfCreditFacilityLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": { "auth_ref": [ "r56" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.", "label": "Line of Credit Facility, Maximum Borrowing Capacity", "terseLabel": "Line of Credit Facility, Maximum Borrowing Capacity" } } }, "localname": "LineOfCreditFacilityMaximumBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity": { "auth_ref": [ "r56" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).", "label": "Line of Credit Facility, Remaining Borrowing Capacity", "terseLabel": "Line of Credit Facility, Remaining Borrowing Capacity" } } }, "localname": "LineOfCreditFacilityRemainingBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityTable": { "auth_ref": [ "r56", "r145" ], "lang": { "en-us": { "role": { "documentation": "A table or schedule providing information pertaining to short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.", "label": "Line of Credit Facility [Table]", "terseLabel": "Line of Credit Facility [Table]" } } }, "localname": "LineOfCreditFacilityTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongTermContractForPurchaseOfElectricPowerAxis": { "auth_ref": [ "r862" ], "lang": { "en-us": { "role": { "documentation": "Information by contract related to purchases of electric power.", "label": "Long-term Contract for Purchase of Electric Power [Axis]", "terseLabel": "Long-term Contract for Purchase of Electric Power [Axis]" } } }, "localname": "LongTermContractForPurchaseOfElectricPowerAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongTermContractForPurchaseOfElectricPowerDomain": { "auth_ref": [ "r862" ], "lang": { "en-us": { "role": { "documentation": "Name of long-term contract for purchase of electric power.", "label": "Long-term Contract for Purchase of Electric Power [Domain]", "terseLabel": "Long-term Contract for Purchase of Electric Power [Domain]" } } }, "localname": "LongTermContractForPurchaseOfElectricPowerDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Long-term Contract for Purchase of Electric Power [Line Items]", "terseLabel": "Long-term Contract for Purchase of Electric Power [Line Items]" } } }, "localname": "LongTermContractForPurchaseOfElectricPowerLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongTermContractsForPurchaseOfElectricPowerTable": { "auth_ref": [ "r862" ], "lang": { "en-us": { "role": { "documentation": "Presents detailed element information concerning the terms and significance of long term contracts to purchase power.", "label": "Long-term Contracts for Purchase of Electric Power [Table]", "terseLabel": "Long-term Contracts for Purchase of Electric Power [Table]" } } }, "localname": "LongTermContractsForPurchaseOfElectricPowerTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongTermDebt": { "auth_ref": [ "r30", "r365", "r380", "r381", "r382", "r780", "r803" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.", "label": "Long-term Debt", "terseLabel": "Long-term Debt" } } }, "localname": "LongTermDebt", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtAndCapitalLeaseObligations": { "auth_ref": [ "r30" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 1.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of long-term debt and lease obligation, classified as noncurrent.", "label": "Long-term Debt and Lease Obligation", "terseLabel": "Long-term debt" } } }, "localname": "LongTermDebtAndCapitalLeaseObligations", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent": { "auth_ref": [ "r59" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of long-term debt and lease obligation, classified as current.", "label": "Long-term Debt and Lease Obligation, Current", "terseLabel": "Current portion of long-term debt" } } }, "localname": "LongTermDebtAndCapitalLeaseObligationsCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtCurrent": { "auth_ref": [ "r58" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.", "label": "Long-term Debt, Current Maturities", "terseLabel": "Long-term Debt, Current Maturities" } } }, "localname": "LongTermDebtCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtFairValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.", "label": "Long-term Debt, Fair Value", "terseLabel": "Long-term debt, Fair Value" } } }, "localname": "LongTermDebtFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofLongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths": { "auth_ref": [ "r152", "r333", "r370" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Long-Term Debt, Maturity, Year One", "terseLabel": "2021" } } }, "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive": { "auth_ref": [ "r152", "r333", "r370" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Long-Term Debt, Maturity, Year Five", "terseLabel": "2025" } } }, "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour": { "auth_ref": [ "r152", "r333", "r370" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Long-Term Debt, Maturity, Year Four", "terseLabel": "2024" } } }, "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree": { "auth_ref": [ "r152", "r333", "r370" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Long-Term Debt, Maturity, Year Three", "terseLabel": "2023" } } }, "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo": { "auth_ref": [ "r152", "r333", "r370" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Long-Term Debt, Maturity, Year Two", "terseLabel": "2022" } } }, "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Debt arrangement having an initial term longer than one year or beyond the normal operating cycle, if longer.", "label": "Long-term Debt [Member]", "terseLabel": "Long-term Debt" } } }, "localname": "LongTermDebtMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LongtermDebtTypeAxis": { "auth_ref": [ "r62" ], "lang": { "en-us": { "role": { "documentation": "Information by type of long-term debt.", "label": "Long-term Debt, Type [Axis]", "terseLabel": "Long-term Debt, Type [Axis]" } } }, "localname": "LongtermDebtTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongtermDebtTypeDomain": { "auth_ref": [ "r62", "r334" ], "lang": { "en-us": { "role": { "documentation": "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.", "label": "Long-term Debt, Type [Domain]", "terseLabel": "Long-term Debt, Type [Domain]" } } }, "localname": "LongtermDebtTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LossContingenciesByNatureOfContingencyAxis": { "auth_ref": [ "r318", "r319", "r320", "r322", "r323", "r324", "r326", "r329", "r330" ], "lang": { "en-us": { "role": { "documentation": "Information by type of existing condition, situation, or set of circumstances involving uncertainty as to possible loss to an enterprise that will ultimately be resolved when one or more future events occur or fail to occur.", "label": "Loss Contingency Nature [Axis]", "terseLabel": "Loss Contingencies by Nature of Contingency [Axis]" } } }, "localname": "LossContingenciesByNatureOfContingencyAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LossContingenciesLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Loss Contingencies [Line Items]", "terseLabel": "Loss Contingencies [Line Items]" } } }, "localname": "LossContingenciesLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LossContingenciesTable": { "auth_ref": [ "r318", "r319", "r320", "r322", "r323", "r324", "r326", "r329", "r330" ], "lang": { "en-us": { "role": { "documentation": "Discloses the specific components (such as the nature, name, and date) of the loss contingency and gives an estimate of the possible loss or range of loss, or states that a reasonable estimate cannot be made. Excludes environmental contingencies, warranties and unconditional purchase obligations.", "label": "Loss Contingencies [Table]", "terseLabel": "Loss Contingencies [Table]" } } }, "localname": "LossContingenciesTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearFuelDisposalDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LossContingencyEstimateOfPossibleLoss": { "auth_ref": [ "r321", "r325", "r329" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.", "label": "Loss Contingency, Estimate of Possible Loss", "terseLabel": "Loss Contingency, Estimate of Possible Loss" } } }, "localname": "LossContingencyEstimateOfPossibleLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LossContingencyNatureDomain": { "auth_ref": [ "r318", "r319", "r320", "r322", "r323", "r324", "r326", "r329", "r330" ], "lang": { "en-us": { "role": { "documentation": "An existing condition, situation, or set of circumstances involving uncertainty as to possible loss to an enterprise that will ultimately be resolved when one or more future events occur or fail to occur. Resolution of the uncertainty may confirm the incurrence of a loss or impairment of an asset or the incurrence of a liability.", "label": "Loss Contingency, Nature [Domain]", "terseLabel": "Loss Contingency, Nature [Domain]" } } }, "localname": "LossContingencyNatureDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesNuclearInsuranceDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LossOnReacquiredDebtMember": { "auth_ref": [ "r864", "r874" ], "lang": { "en-us": { "role": { "documentation": "Rate action of a regulator resulting in capitalization or accrual of loss incurred on reacquisition or refinancing of debt.", "label": "Loss on Reacquired Debt [Member]", "terseLabel": "Loss on Reacquired Debt" } } }, "localname": "LossOnReacquiredDebtMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MovementInValuationAllowancesAndReservesRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]", "terseLabel": "SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]" } } }, "localname": "MovementInValuationAllowancesAndReservesRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_MutualFundMember": { "auth_ref": [ "r447" ], "lang": { "en-us": { "role": { "documentation": "Regulated investment instrument that pools funds from multiple investors to invest principally in a portfolio of securities and money market instruments to match the investment objective.", "label": "Mutual Fund [Member]", "terseLabel": "Mutual Fund [Member]" } } }, "localname": "MutualFundMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NaturalGasUsRegulatedMember": { "auth_ref": [ "r405" ], "lang": { "en-us": { "role": { "documentation": "Generation, transmission and distribution of flammable gas occurring naturally underground regulated by government or agency in United States.", "label": "Natural Gas, US Regulated [Member]", "terseLabel": "Natural Gas, US Regulated" } } }, "localname": "NaturalGasUsRegulatedMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r125" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 1.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.", "label": "Net Cash Provided by (Used in) Financing Activities", "totalLabel": "Net cash provided by financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]", "terseLabel": "Financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r125" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 2.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.", "label": "Net Cash Provided by (Used in) Investing Activities", "totalLabel": "Net cash used in investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]", "terseLabel": "Investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r125", "r128", "r131" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 3.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.", "label": "Net Cash Provided by (Used in) Operating Activities", "totalLabel": "Net cash provided by operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "stringItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r7", "r91", "r94", "r100", "r105", "r131", "r146", "r168", "r174", "r175", "r176", "r177", "r179", "r180", "r185", "r214", "r220", "r224", "r227", "r230", "r265", "r336", "r337", "r338", "r341", "r342", "r343", "r345", "r347", "r349", "r350", "r642", "r666", "r786", "r810" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 13.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": { "order": 1.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 }, "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.", "label": "Net Income (Loss) Attributable to Parent", "terseLabel": "Net income", "totalLabel": "Net income", "verboseLabel": "Net income (loss)" } } }, "localname": "NetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails", "http://www.xcelenergy.com/role/SummarizedQuarterlyFinancialDataUnauditedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Accounting Standards Update and Change in Accounting Principle [Abstract]", "terseLabel": "New Accounting Pronouncements and Changes in Accounting Principles [Abstract]" } } }, "localname": "NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock": { "auth_ref": [ "r5", "r166", "r167", "r170", "r171", "r181", "r182", "r183", "r249", "r250", "r270", "r271", "r412", "r413", "r414", "r415", "r524", "r563", "r564", "r565", "r638", "r673", "r674", "r675", "r707", "r762", "r763", "r764", "r826", "r827", "r828", "r829", "r831", "r917" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.", "label": "Accounting Standards Update and Change in Accounting Principle [Text Block]", "terseLabel": "Accounting Pronouncements" } } }, "localname": "NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/AccountingPronouncements" ], "xbrltype": "textBlockItemType" }, "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "New Accounting Pronouncements or Change in Accounting Principle [Line Items]", "terseLabel": "New Accounting Pronouncements or Change in Accounting Principle [Line Items]" } } }, "localname": "NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/AccountingPronouncementsRecentlyAdoptedDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable": { "auth_ref": [ "r0", "r1", "r2", "r3", "r4", "r165", "r168", "r169", "r170", "r172", "r173", "r176", "r181", "r186", "r247", "r248", "r266", "r267", "r268", "r269", "r272", "r273", "r335", "r517", "r518", "r519", "r520", "r521", "r522", "r523", "r525", "r559", "r560", "r561", "r562", "r631", "r632", "r633", "r634", "r635", "r636", "r637", "r639", "r640", "r641", "r642", "r667", "r668", "r669", "r670", "r671", "r672", "r676", "r677", "r706", "r759", "r760", "r761", "r820", "r821", "r822", "r823", "r824", "r825", "r826", "r827", "r828", "r829", "r830", "r831", "r912", "r913", "r914", "r915", "r916" ], "lang": { "en-us": { "role": { "documentation": "Summarization of the changes in an accounting principle or a new accounting pronouncement, including the line items affected by the change and the financial effects of the change on those particular line items.", "label": "Accounting Standards Update and Change in Accounting Principle [Table]", "terseLabel": "New Accounting Pronouncements or Change in Accounting Principle [Table]" } } }, "localname": "NewAccountingPronouncementsOrChangeInAccountingPrincipleTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/AccountingPronouncementsRecentlyAdoptedDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NondesignatedMember": { "auth_ref": [ "r604" ], "lang": { "en-us": { "role": { "documentation": "Derivative instrument not designated as hedging instrument under Generally Accepted Accounting Principles (GAAP).", "label": "Not Designated as Hedging Instrument [Member]", "terseLabel": "Other Derivative Instruments", "verboseLabel": "Not Designated as Hedging Instrument" } } }, "localname": "NondesignatedMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails", "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NuclearFuelMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Any material that is commonly used in the generation of nuclear energy.", "label": "Nuclear Fuel [Member]", "terseLabel": "Nuclear fuel" } } }, "localname": "NuclearFuelMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NuclearPlantMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Plant used in connection with the generation of nuclear energy.", "label": "Nuclear Plant [Member]", "terseLabel": "Nuclear Plant [Member]", "verboseLabel": "Electric Plant Nuclear Production Decommissioning" } } }, "localname": "NuclearPlantMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OperatingCostsAndExpensesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Operating Costs and Expenses [Abstract]", "terseLabel": "Operating expenses" } } }, "localname": "OperatingCostsAndExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "stringItemType" }, "us-gaap_OperatingIncomeLoss": { "auth_ref": [ "r214", "r220", "r224", "r227", "r230" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 1.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The net result for the period of deducting operating expenses from operating revenues.", "label": "Operating Income (Loss)", "terseLabel": "Operating income", "totalLabel": "Operating income" } } }, "localname": "OperatingIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/SummarizedQuarterlyFinancialDataUnauditedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseCost": { "auth_ref": [ "r699", "r705" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.", "label": "Operating Lease, Cost", "terseLabel": "Operating Lease, Cost" } } }, "localname": "OperatingLeaseCost", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Lessee, Operating Lease, Liability, Payment, Due [Abstract]", "terseLabel": "Lessee, Operating Lease, Liability, Payment, Due [Abstract]" } } }, "localname": "OperatingLeaseLiabilitiesPaymentsDueAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_OperatingLeaseLiability": { "auth_ref": [ "r696" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease.", "label": "Operating Lease, Liability", "terseLabel": "Present value of minimum obligation" } } }, "localname": "OperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails", "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiabilityCurrent": { "auth_ref": [ "r696" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 5.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.", "label": "Operating Lease, Liability, Current", "negatedTerseLabel": "Less current portion", "terseLabel": "Operating lease liabilities" } } }, "localname": "OperatingLeaseLiabilityCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiabilityNoncurrent": { "auth_ref": [ "r696" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.", "label": "Operating Lease, Liability, Noncurrent", "terseLabel": "Operating lease liabilities" } } }, "localname": "OperatingLeaseLiabilityNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseRightOfUseAsset": { "auth_ref": [ "r695" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 1.0, "parentTag": "nspm_OtherAssetsExcludingPropertyPlantAndEquipment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's right to use underlying asset under operating lease.", "label": "Operating Lease, Right-of-Use Asset", "terseLabel": "Operating lease right-of-use assets" } } }, "localname": "OperatingLeaseRightOfUseAsset", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent": { "auth_ref": [ "r702", "r705" ], "lang": { "en-us": { "role": { "documentation": "Weighted average discount rate for operating lease calculated at point in time.", "label": "Operating Lease, Weighted Average Discount Rate, Percent", "terseLabel": "Operating Lease, Weighted Average Discount Rate, Percent" } } }, "localname": "OperatingLeaseWeightedAverageDiscountRatePercent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "percentItemType" }, "us-gaap_OperatingLossCarryforwards": { "auth_ref": [ "r553" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.", "label": "Operating Loss Carryforwards", "terseLabel": "NOL carryforward" } } }, "localname": "OperatingLossCarryforwards", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingSegmentsMember": { "auth_ref": [ "r219", "r220", "r221", "r222", "r224", "r230" ], "lang": { "en-us": { "role": { "documentation": "Identifies components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity.", "label": "Operating Segments [Member]", "terseLabel": "Total revenues" } } }, "localname": "OperatingSegmentsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherAssetsNoncurrent": { "auth_ref": [ "r53" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 3.0, "parentTag": "nspm_OtherAssetsExcludingPropertyPlantAndEquipment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of noncurrent assets classified as other.", "label": "Other Assets, Noncurrent", "verboseLabel": "Other" } } }, "localname": "OtherAssetsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember": { "auth_ref": [ "r290" ], "lang": { "en-us": { "role": { "documentation": "All other long term capitalized assets related to property plant and equipment not otherwise previously categorized.", "label": "Other Capitalized Property Plant and Equipment [Member]", "terseLabel": "Common and other property" } } }, "localname": "OtherCapitalizedPropertyPlantAndEquipmentMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherCommitmentsLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Other Commitments [Line Items]", "terseLabel": "Other Commitments [Line Items]" } } }, "localname": "OtherCommitmentsLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_OtherCommitmentsTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about obligations resulting from other commitments.", "label": "Other Commitments [Table]", "terseLabel": "Other Commitments [Table]" } } }, "localname": "OtherCommitmentsTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]", "terseLabel": "Derivative instruments:" } } }, "localname": "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r92", "r95", "r98", "r99", "r101", "r106", "r388", "r679", "r684", "r685", "r787", "r811" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount after tax and reclassification adjustments of other comprehensive income (loss).", "label": "Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Net current period other comprehensive income" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Other Comprehensive Income (Loss), Net of Tax [Abstract]", "terseLabel": "Other comprehensive income" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent": { "auth_ref": [ "r92", "r95", "r583", "r584", "r588" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": { "order": 2.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount after tax of other comprehensive income (loss) attributable to parent entity.", "label": "Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent", "terseLabel": "Other comprehensive income", "totalLabel": "Total other comprehensive income" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax": { "auth_ref": [ "r85", "r89", "r90", "r605" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).", "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax", "negatedLabel": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax", "negatedTerseLabel": "After-tax net realized losses on derivative transactions reclassified into earnings" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME", "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax": { "auth_ref": [ "r86" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).", "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax", "negatedLabel": "Reclassification adjustment from AOCI on derivatives, tax", "terseLabel": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEParenthetical", "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax": { "auth_ref": [ "r81", "r85", "r628" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).", "label": "Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax", "negatedTerseLabel": "Pre-tax fair value gains (losses) recognized during the period in accumulated other comprehensive loss" } } }, "localname": "OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/QualifyingCashFlowHedgesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherCostOfOperatingRevenue": { "auth_ref": [ "r112" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 2.0, "parentTag": "us-gaap_CostsAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Other costs incurred during the reporting period related to other revenue generating activities.", "label": "Other Cost of Operating Revenue", "terseLabel": "Cost of sales \u2014 other" } } }, "localname": "OtherCostOfOperatingRevenue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherCurrentAssetsMember": { "auth_ref": [ "r607", "r625" ], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption encompassing other current assets.", "label": "Other Current Assets [Member]", "terseLabel": "Other Current Assets" } } }, "localname": "OtherCurrentAssetsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherCurrentLiabilitiesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption encompassing other current liabilities.", "label": "Other Current Liabilities [Member]", "terseLabel": "Other Current Liabilities" } } }, "localname": "OtherCurrentLiabilitiesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherExpenseMember": { "auth_ref": [ "r618" ], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption encompassing other expense.", "label": "Other Expense [Member]", "terseLabel": "Other Expense" } } }, "localname": "OtherExpenseMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherInvestmentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption encompassing other investments.", "label": "Other Investments [Member]", "terseLabel": "Other" } } }, "localname": "OtherInvestmentsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherLiabilitiesCurrent": { "auth_ref": [ "r15", "r16", "r59", "r721" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 9.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.", "label": "Other Liabilities, Current", "verboseLabel": "Other" } } }, "localname": "OtherLiabilitiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherLiabilitiesNoncurrent": { "auth_ref": [ "r63" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 8.0, "parentTag": "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.", "label": "Other Liabilities, Noncurrent", "verboseLabel": "Other" } } }, "localname": "OtherLiabilitiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherLongTermInvestments": { "auth_ref": [ "r48", "r809" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of long-term investments classified as other.", "label": "Other Long-term Investments", "terseLabel": "Miscellaneous investments" } } }, "localname": "OtherLongTermInvestments", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherNoncashInvestingAndFinancingItemsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Other Noncash Investing and Financing Items [Abstract]", "terseLabel": "Supplemental disclosure of non-cash investing and financing transactions:" } } }, "localname": "OtherNoncashInvestingAndFinancingItemsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "stringItemType" }, "us-gaap_OtherNoncurrentAssetsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption encompassing other noncurrent assets.", "label": "Other Noncurrent Assets [Member]", "terseLabel": "Other Noncurrent Assets" } } }, "localname": "OtherNoncurrentAssetsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherNoncurrentLiabilitiesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption encompassing other noncurrent liabilities.", "label": "Other Noncurrent Liabilities [Member]", "terseLabel": "Other Noncurrent Liabilities" } } }, "localname": "OtherNoncurrentLiabilitiesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RecurringFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherNonoperatingIncomeExpense": { "auth_ref": [ "r114" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 4.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of income (expense) related to nonoperating activities, classified as other.", "label": "Other Nonoperating Income (Expense)", "terseLabel": "Other income (expense), net" } } }, "localname": "OtherNonoperatingIncomeExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherOperatingActivitiesCashFlowStatement": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Other cash or noncash adjustments to reconcile net income to cash provided by (used in) operating activities that are not separately disclosed in the statement of cash flows (for example, cash received or cash paid during the current period for miscellaneous operating activities, net change during the reporting period in other assets or other liabilities).", "label": "Other Operating Activities, Cash Flow Statement", "terseLabel": "Other, net" } } }, "localname": "OtherOperatingActivitiesCashFlowStatement", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefitMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Pension plan, other postretirement plan, and supplemental retirement plan, classified as other. Includes, but is not limited to, defined benefit and defined contribution plans.", "label": "Other Pension, Postretirement and Supplemental Plans [Member]", "terseLabel": "Supplemental Executive Retirement Plan (SERP) and Nonqualified Pension Plan" } } }, "localname": "OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefitMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember": { "auth_ref": [ "r418", "r419", "r423", "r424", "r425", "r426", "r427", "r428", "r429", "r430", "r431", "r432", "r433", "r435", "r436", "r437", "r438", "r439", "r440", "r441", "r442", "r443", "r444", "r446", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r456", "r457", "r458", "r459", "r460", "r461", "r462", "r463", "r464", "r465", "r466", "r467", "r468", "r470", "r471", "r473", "r476", "r480", "r485", "r486", "r487", "r488", "r489", "r490", "r491", "r492", "r493", "r494", "r495", "r496", "r502", "r503", "r504", "r505", "r506", "r507" ], "lang": { "en-us": { "role": { "documentation": "Plan designed to provide other postretirement benefits. Includes, but is not limited to, defined benefit and defined contribution plans. Excludes pension benefits.", "label": "Other Postretirement Benefits Plan [Member]", "terseLabel": "Postretirement Benefits Plan" } } }, "localname": "OtherPostretirementBenefitPlansDefinedBenefitMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "domainItemType" }, "us-gaap_OutageCostsPolicy": { "auth_ref": [ "r859" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for reporting outage costs, including the creation of regulatory assets or regulatory liabilities.", "label": "Outage Costs, Policy [Policy Text Block]", "terseLabel": "Nuclear Refueling Outage Costs" } } }, "localname": "OutageCostsPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_OverfundedPlanMember": { "auth_ref": [ "r423", "r424", "r425", "r426", "r427", "r428", "r429", "r430", "r431", "r432", "r433", "r435", "r436", "r437", "r438", "r439", "r440", "r441", "r442", "r443", "r444", "r446", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r455", "r456", "r457", "r458", "r459", "r460", "r461", "r462", "r463", "r464", "r465", "r466", "r467", "r468", "r469", "r470", "r471", "r473", "r476", "r480", "r481", "r482", "r485", "r486", "r487", "r488", "r489", "r490", "r491", "r492", "r493", "r494" ], "lang": { "en-us": { "role": { "documentation": "Defined benefit plan in which retirement benefits are payable directly from plan assets segregated and restricted to provide such benefits and for which plan assets exceed benefit obligation of plan designed to provide retirement benefits.", "label": "Defined Benefit Plan, Overfunded Plan [Member]", "terseLabel": "Defined Benefit Plan, Overfunded Plan [Member]" } } }, "localname": "OverfundedPlanMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PaymentsForProceedsFromOtherInvestingActivities": { "auth_ref": [ "r116", "r118" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash (inflow) outflow from investing activities classified as other.", "label": "Payments for (Proceeds from) Other Investing Activities", "negatedLabel": "Other, net" } } }, "localname": "PaymentsForProceedsFromOtherInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDividendsCommonStock": { "auth_ref": [ "r121" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.", "label": "Payments of Ordinary Dividends, Common Stock", "negatedLabel": "Dividends paid to parent" } } }, "localname": "PaymentsOfDividendsCommonStock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireProductiveAssets": { "auth_ref": [ "r117", "r578", "r579", "r580" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.", "label": "Payments to Acquire Productive Assets", "negatedLabel": "Capital/construction expenditures" } } }, "localname": "PaymentsToAcquireProductiveAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToInvestInDecommissioningFund": { "auth_ref": [ "r118" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow for the purchase of investments that will be held in a decommissioning trust fund.", "label": "Payments to Acquire Investments to be Held in Decommissioning Trust Fund", "negatedLabel": "Purchase of investment securities" } } }, "localname": "PaymentsToInvestInDecommissioningFund", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock": { "auth_ref": [ "r446", "r448", "r454", "r472", "r474", "r475", "r476", "r477", "r478", "r495", "r497", "r500", "r502", "r516" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for retirement benefits.", "label": "Retirement Benefits [Text Block]", "verboseLabel": "Benefit Plans and Other Postretirement Benefits" } } }, "localname": "PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefits" ], "xbrltype": "textBlockItemType" }, "us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities": { "auth_ref": [ "r29", "r419", "r420", "r444", "r495" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current.", "label": "Liability, Defined Benefit Plan, Current", "negatedLabel": "Current liabilities", "negatedTerseLabel": "Liability, Defined Benefit Plan, Current" } } }, "localname": "PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent": { "auth_ref": [ "r31", "r419", "r420", "r444", "r495" ], "calculation": { "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet", "weight": -1.0 }, "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 6.0, "parentTag": "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.", "label": "Liability, Defined Benefit Plan, Noncurrent", "negatedLabel": "Noncurrent liabilities", "negatedTerseLabel": "Liability, Defined Benefit Plan, Noncurrent", "verboseLabel": "Pension and employee benefit obligations" } } }, "localname": "PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionAndOtherPostretirementPlansPolicy": { "auth_ref": [ "r479", "r498", "r499", "r502", "r508" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for pension and other postretirement benefit plans. This accounting policy may address (1) the types of plans sponsored by the entity, and the benefits provided by each plan (2) groups that participate in (or are covered by) each plan (3) how plan assets, liabilities and expenses are measured, including the use of any actuaries and (4) significant assumptions used by the entity to value plan assets and liabilities and how such assumptions are derived.", "label": "Pension and Other Postretirement Plans, Policy [Policy Text Block]", "terseLabel": "Benefit Plans and Other Postretirement Benefits" } } }, "localname": "PensionAndOtherPostretirementPlansPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_PensionContributions": { "auth_ref": [ "r127" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.", "label": "Payment for Pension Benefits", "terseLabel": "Payment for Pension Benefits", "verboseLabel": "Total contributions to Xcel Energy's pension plans during the period" } } }, "localname": "PensionContributions", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionPlansDefinedBenefitMember": { "auth_ref": [ "r417", "r419", "r423", "r424", "r425", "r426", "r427", "r428", "r429", "r430", "r431", "r432", "r433", "r435", "r436", "r437", "r438", "r439", "r440", "r441", "r442", "r443", "r444", "r446", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r455", "r456", "r457", "r458", "r459", "r460", "r461", "r462", "r463", "r464", "r465", "r466", "r467", "r468", "r470", "r471", "r473", "r476", "r480", "r485", "r486", "r487", "r488", "r489", "r490", "r491", "r492", "r493", "r494", "r495", "r496", "r502", "r503", "r511", "r512", "r513", "r514" ], "lang": { "en-us": { "role": { "documentation": "Plan designed to provide participant with pension benefits. Includes, but is not limited to, defined benefit and defined contribution plans. Excludes other postretirement benefits.", "label": "Pension Plan [Member]", "terseLabel": "Pension Plan", "verboseLabel": "Pension Plan" } } }, "localname": "PensionPlansDefinedBenefitMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "domainItemType" }, "us-gaap_PlanAssetCategoriesDomain": { "auth_ref": [ "r446", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r473", "r495" ], "lang": { "en-us": { "role": { "documentation": "Defined benefit plan asset investment.", "label": "Defined Benefit Plan, Plan Assets, Category [Domain]", "terseLabel": "Defined Benefit Plan, Plan Assets, Category [Domain]" } } }, "localname": "PlanAssetCategoriesDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PortionAtFairValueFairValueDisclosureMember": { "auth_ref": [ "r658" ], "lang": { "en-us": { "role": { "documentation": "Measured at fair value for financial reporting purposes.", "label": "Portion at Fair Value Measurement [Member]", "terseLabel": "Portion at Fair Value Measurement" } } }, "localname": "PortionAtFairValueFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentandContingenciesAROsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PrepaidExpenseAndOtherAssetsCurrent": { "auth_ref": [ "r13", "r45", "r46" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 8.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.", "label": "Prepaid Expense and Other Assets, Current", "terseLabel": "Prepayments and other" } } }, "localname": "PrepaidExpenseAndOtherAssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrescriptionDrugSubsidyReceiptsAfterYearFive": { "auth_ref": [ "r456", "r501" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of prescription drug subsidy receipt expected after fifth fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, after Year Five", "verboseLabel": "2027-2031" } } }, "localname": "PrescriptionDrugSubsidyReceiptsAfterYearFive", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrescriptionDrugSubsidyReceiptsNextTwelveMonths": { "auth_ref": [ "r456", "r501" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of prescription drug subsidy receipt expected in next fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year One", "verboseLabel": "2022" } } }, "localname": "PrescriptionDrugSubsidyReceiptsNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrescriptionDrugSubsidyReceiptsYearFive1": { "auth_ref": [ "r456", "r501" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of prescription drug subsidy receipt expected in fifth fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Five", "verboseLabel": "2026" } } }, "localname": "PrescriptionDrugSubsidyReceiptsYearFive1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrescriptionDrugSubsidyReceiptsYearFour1": { "auth_ref": [ "r456", "r501" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of prescription drug subsidy receipt expected in fourth fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Four", "verboseLabel": "2025" } } }, "localname": "PrescriptionDrugSubsidyReceiptsYearFour1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrescriptionDrugSubsidyReceiptsYearThree1": { "auth_ref": [ "r456", "r501" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of prescription drug subsidy receipt expected in third fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Three", "verboseLabel": "2024" } } }, "localname": "PrescriptionDrugSubsidyReceiptsYearThree1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrescriptionDrugSubsidyReceiptsYearTwo1": { "auth_ref": [ "r456", "r501" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of prescription drug subsidy receipt expected in second fiscal year following current fiscal year.", "label": "Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Two", "verboseLabel": "2023" } } }, "localname": "PrescriptionDrugSubsidyReceiptsYearTwo1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromContributionsFromParent": { "auth_ref": [ "r120" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow from parent as a source of financing that is recorded as additional paid in capital.", "label": "Proceeds from Contributions from Parent", "terseLabel": "Capital contributions from parent" } } }, "localname": "ProceedsFromContributionsFromParent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromDecommissioningFund": { "auth_ref": [ "r116" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow from the sale of assets held in a decommissioning trust fund.", "label": "Proceeds from Decommissioning Trust Fund Assets", "terseLabel": "Proceeds from the sale of investment securities" } } }, "localname": "ProceedsFromDecommissioningFund", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfLongTermDebt": { "auth_ref": [ "r119" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.", "label": "Proceeds from Issuance of Long-term Debt", "terseLabel": "Proceeds from issuance of long-term debt" } } }, "localname": "ProceedsFromIssuanceOfLongTermDebt", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromPaymentsForOtherFinancingActivities": { "auth_ref": [ "r120", "r123" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from financing activities classified as other.", "label": "Proceeds from (Payments for) Other Financing Activities", "terseLabel": "Other, net" } } }, "localname": "ProceedsFromPaymentsForOtherFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromRepaymentsOfShortTermDebt": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.", "label": "Proceeds from (Repayments of) Short-term Debt", "terseLabel": "(Repayments of) proceeds from short-term borrowings, net" } } }, "localname": "ProceedsFromRepaymentsOfShortTermDebt", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProductMember": { "auth_ref": [ "r405" ], "lang": { "en-us": { "role": { "documentation": "Article or substance produced by nature, labor or machinery.", "label": "Product [Member]", "terseLabel": "Total revenue from contracts with customers" } } }, "localname": "ProductMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PropertyPlantAndEquipmentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Property, Plant and Equipment [Abstract]", "terseLabel": "Property, Plant and Equipment [Abstract]" } } }, "localname": "PropertyPlantAndEquipmentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentByTypeAxis": { "auth_ref": [ "r52", "r292" ], "lang": { "en-us": { "role": { "documentation": "Information by type of long-lived, physical assets used to produce goods and services and not intended for resale.", "label": "Long-Lived Tangible Asset [Axis]", "terseLabel": "Property, Plant and Equipment, Type [Axis]" } } }, "localname": "PropertyPlantAndEquipmentByTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails", "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock": { "auth_ref": [ "r294", "r853", "r854", "r855" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.", "label": "Property, Plant and Equipment Disclosure [Text Block]", "terseLabel": "Property, Plant and Equipment Disclosure" } } }, "localname": "PropertyPlantAndEquipmentDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentPropertyPlantandEquipment" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentGross": { "auth_ref": [ "r51", "r290" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.", "label": "Property, Plant and Equipment, Gross", "terseLabel": "Property, plant and equipment" } } }, "localname": "PropertyPlantAndEquipmentGross", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Property, Plant and Equipment [Line Items]", "terseLabel": "Property, Plant and Equipment [Line Items]" } } }, "localname": "PropertyPlantAndEquipmentLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentNet": { "auth_ref": [ "r23", "r24", "r292", "r721", "r796", "r807" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 2.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.", "label": "Property, Plant and Equipment, Net", "terseLabel": "Property, plant and equipment, net", "verboseLabel": "Property, Plant and Equipment, Net" } } }, "localname": "PropertyPlantAndEquipmentNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentOtherTypesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long-lived, physical assets used to produce goods and services and not intended for resale, classified as other.", "label": "Property, Plant and Equipment, Other Types [Member]", "terseLabel": "Property, Plant and Equipment, Other Types [Member]" } } }, "localname": "PropertyPlantAndEquipmentOtherTypesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PropertyPlantAndEquipmentPolicyTextBlock": { "auth_ref": [ "r49", "r292", "r853", "r854" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.", "label": "Property, Plant and Equipment, Policy [Policy Text Block]", "terseLabel": "Property, Plant and Equipment and Depreciation" } } }, "localname": "PropertyPlantAndEquipmentPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentTypeDomain": { "auth_ref": [ "r23", "r290" ], "lang": { "en-us": { "role": { "documentation": "Listing of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.", "label": "Long-Lived Tangible Asset [Domain]", "terseLabel": "Property, Plant and Equipment, Type [Domain]" } } }, "localname": "PropertyPlantAndEquipmentTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails", "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ProvisionForDoubtfulAccounts": { "auth_ref": [ "r108", "r276" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 14.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of expense (reversal of expense) for expected credit loss on accounts receivable.", "label": "Accounts Receivable, Credit Loss Expense (Reversal)", "terseLabel": "Provision for bad debts" } } }, "localname": "ProvisionForDoubtfulAccounts", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity": { "auth_ref": [ "r882", "r883" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 12.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 3.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets.", "label": "Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity", "negatedLabel": "Allowance for equity funds used during construction", "terseLabel": "Allowance for funds used during construction \u2014 equity" } } }, "localname": "PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_PublicUtilitiesGeneralDisclosuresLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Public Utilities, General Disclosures [Line Items]", "terseLabel": "Public Utilities, General Disclosures [Line Items]" } } }, "localname": "PublicUtilitiesGeneralDisclosuresLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PublicUtilitiesGeneralDisclosuresTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about regulation for public utility entities, including, but not limited to, rate requests, decommissioning costs and the amount of allowance for earnings on equity capitalized for rate making purposes.", "label": "Public Utilities General Disclosures [Table]", "terseLabel": "Public Utilities General Disclosures [Table]" } } }, "localname": "PublicUtilitiesGeneralDisclosuresTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesRegulatoryPlantDecommissioningRecoveryDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PublicUtilitiesInventory": { "auth_ref": [ "r44" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The period end amount for a type of inventory held by the utility in a schedule of inventories.", "label": "Public Utilities, Inventory", "terseLabel": "Public Utilities, Inventory" } } }, "localname": "PublicUtilitiesInventory", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PublicUtilitiesInventoryAxis": { "auth_ref": [ "r44" ], "lang": { "en-us": { "role": { "documentation": "Information by type of inventory held.", "label": "Inventory [Axis]", "terseLabel": "Inventory [Axis]" } } }, "localname": "PublicUtilitiesInventoryAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PublicUtilitiesInventoryFuelMember": { "auth_ref": [ "r44" ], "lang": { "en-us": { "role": { "documentation": "Any material consumed to produce energy.", "label": "Public Utilities, Inventory, Fuel [Member]", "terseLabel": "Public Utilities, Inventory, Fuel" } } }, "localname": "PublicUtilitiesInventoryFuelMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PublicUtilitiesInventoryLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Public Utilities, Inventory [Line Items]", "terseLabel": "Public Utilities, Inventory [Line Items]" } } }, "localname": "PublicUtilitiesInventoryLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PublicUtilitiesInventoryNaturalGasMember": { "auth_ref": [ "r42" ], "lang": { "en-us": { "role": { "documentation": "Mixture of gases, liquefied or otherwise, used for fuel and manufacturing purposes, which is ready for sale.", "label": "Public Utilities, Inventory, Natural Gas [Member]", "verboseLabel": "Public Utilities, Inventory, Natural Gas" } } }, "localname": "PublicUtilitiesInventoryNaturalGasMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PublicUtilitiesInventorySuppliesMember": { "auth_ref": [ "r43" ], "lang": { "en-us": { "role": { "documentation": "Materials used as supplies by the entity.", "label": "Supplies [Member]", "terseLabel": "Supplies" } } }, "localname": "PublicUtilitiesInventorySuppliesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PublicUtilitiesInventoryTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Detailed information about the type of inventory held by the utility and the carrying value of this inventory.", "label": "Public Utilities, Inventory [Table]", "terseLabel": "Public Utilities, Inventory [Table]" } } }, "localname": "PublicUtilitiesInventoryTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PublicUtilitiesInventoryTypeDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tangible personal property that is held for sale in the ordinary course of business, in process of production for such sale or is to be currently consumed in the production of goods or services to be available for sale.", "label": "Inventory [Domain]", "terseLabel": "Inventory [Domain]" } } }, "localname": "PublicUtilitiesInventoryTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PublicUtilitiesRegulatoryProceedingAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by name of regulatory proceeding.", "label": "Public Utilities, Regulatory Proceeding [Axis]", "terseLabel": "Public Utilities, Regulatory Proceeding [Axis]" } } }, "localname": "PublicUtilitiesRegulatoryProceedingAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PublicUtilitiesRegulatoryProceedingDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Proceeding with public utility's regulatory body.", "label": "Public Utilities, Regulatory Proceeding [Domain]", "terseLabel": "Public Utilities, Regulatory Proceeding [Domain]" } } }, "localname": "PublicUtilitiesRegulatoryProceedingDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_QuarterlyFinancialInformationDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Quarterly Financial Information Disclosure [Abstract]", "terseLabel": "Quarterly Financial Information Disclosure [Abstract]" } } }, "localname": "QuarterlyFinancialInformationDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_QuarterlyFinancialInformationTextBlock": { "auth_ref": [ "r189", "r190" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information.", "label": "Quarterly Financial Information [Text Block]", "verboseLabel": "Summarized Quarterly Financial Data (Unaudited)" } } }, "localname": "QuarterlyFinancialInformationTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummarizedQuarterlyFinancialDataUnaudited" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax": { "auth_ref": [ "r88", "r98", "r99", "r101", "r679", "r683", "r685" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount after tax of reclassification adjustments of other comprehensive income (loss).", "label": "Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax", "negatedTerseLabel": "Interest rate derivatives, net of tax of $\u2014" } } }, "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatedAndUnregulatedOperatingRevenue": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The total amount of operating revenues recognized during the period.", "label": "Regulated and Unregulated Operating Revenue", "terseLabel": "Total operating revenues", "totalLabel": "Total operating revenues" } } }, "localname": "RegulatedAndUnregulatedOperatingRevenue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails", "http://www.xcelenergy.com/role/SummarizedQuarterlyFinancialDataUnauditedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatedOperatingRevenueGas": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 2.0, "parentTag": "us-gaap_RegulatedAndUnregulatedOperatingRevenue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount of regulated gas operating revenues recognized during the period.", "label": "Regulated Operating Revenue, Gas", "terseLabel": "Natural gas" } } }, "localname": "RegulatedOperatingRevenueGas", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryAgencyAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by name of regulatory agency.", "label": "Regulatory Agency [Axis]", "terseLabel": "Regulatory Agency [Axis]" } } }, "localname": "RegulatoryAgencyAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RegulatoryAgencyDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Organization that establishes and ensures compliance with rules or regulations.", "label": "Regulatory Agency [Domain]", "terseLabel": "Regulatory Agency [Domain]" } } }, "localname": "RegulatoryAgencyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesMISOROEComplaintsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RegulatoryAssetAmortizationPeriod": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Regulatory Asset, Amortization Period", "terseLabel": "Regulatory Asset, Amortization Period" } } }, "localname": "RegulatoryAssetAmortizationPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "durationItemType" }, "us-gaap_RegulatoryAssetAxis": { "auth_ref": [ "r865", "r866", "r879" ], "lang": { "en-us": { "role": { "documentation": "Information by type of regulatory asset.", "label": "Regulatory Asset [Axis]", "terseLabel": "Regulatory Asset [Axis]" } } }, "localname": "RegulatoryAssetAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RegulatoryAssetDomain": { "auth_ref": [ "r865" ], "lang": { "en-us": { "role": { "documentation": "Rate action of a regulator resulting in capitalization of costs incurred.", "label": "Regulatory Asset [Domain]", "terseLabel": "Regulatory Asset [Domain]" } } }, "localname": "RegulatoryAssetDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RegulatoryAssetLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Regulatory Assets [Line Items]", "terseLabel": "Regulatory Assets [Line Items]" } } }, "localname": "RegulatoryAssetLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RegulatoryAssets": { "auth_ref": [ "r865" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.", "label": "Regulatory Assets", "terseLabel": "Regulatory assets" } } }, "localname": "RegulatoryAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryAssetsAndLiabilitiesDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Regulatory Assets and Liabilities Disclosure [Abstract]", "terseLabel": "Regulatory Assets and Liabilities Disclosure [Abstract]" } } }, "localname": "RegulatoryAssetsAndLiabilitiesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_RegulatoryAssetsCurrent": { "auth_ref": [ "r865" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 3.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost.", "label": "Regulatory Assets, Current", "terseLabel": "Regulatory Asset, Current", "verboseLabel": "Regulatory assets" } } }, "localname": "RegulatoryAssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryAssetsNoncurrent": { "auth_ref": [ "r865" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 4.0, "parentTag": "nspm_OtherAssetsExcludingPropertyPlantAndEquipment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.", "label": "Regulatory Assets, Noncurrent", "verboseLabel": "Regulatory assets" } } }, "localname": "RegulatoryAssetsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryEnvironmentalCostsPolicy": { "auth_ref": [ "r873" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for liabilities for remediation of environmental matters. The accounting policy may specify the conditions under which rate actions of a regulator provide reasonable assurance of the existence of an asset pertaining thereto.", "label": "Regulatory Environmental Costs, Policy [Policy Text Block]", "terseLabel": "Environmental Costs" } } }, "localname": "RegulatoryEnvironmentalCostsPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_RegulatoryLiabilities": { "auth_ref": [ "r871" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.", "label": "Regulatory Liabilities", "terseLabel": "Regulatory Liabilities" } } }, "localname": "RegulatoryLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryLiabilitiesLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Regulatory Liabilities [Line Items]", "terseLabel": "Regulatory Liabilities [Line Items]" } } }, "localname": "RegulatoryLiabilitiesLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RegulatoryLiabilityAxis": { "auth_ref": [ "r871" ], "lang": { "en-us": { "role": { "documentation": "Information by type of regulatory liability.", "label": "Regulatory Liability [Axis]", "terseLabel": "Regulatory Liability [Axis]" } } }, "localname": "RegulatoryLiabilityAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RegulatoryLiabilityCurrent": { "auth_ref": [ "r871" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.", "label": "Regulatory Liability, Current", "terseLabel": "Regulatory Liability, Current", "verboseLabel": "Regulatory liabilities" } } }, "localname": "RegulatoryLiabilityCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryLiabilityDomain": { "auth_ref": [ "r871" ], "lang": { "en-us": { "role": { "documentation": "Rate action of a regulator resulting in accrual of costs or expenses.", "label": "Regulatory Liability [Domain]", "terseLabel": "Regulatory Liability [Domain]" } } }, "localname": "RegulatoryLiabilityDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RegulatoryLiabilityNoncurrent": { "auth_ref": [ "r63" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 7.0, "parentTag": "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.", "label": "Regulatory Liability, Noncurrent", "terseLabel": "Regulatory Liability, Noncurrent", "verboseLabel": "Regulatory liabilities" } } }, "localname": "RegulatoryLiabilityNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RelatedPartyDomain": { "auth_ref": [ "r473", "r710", "r711" ], "lang": { "en-us": { "role": { "documentation": "Related parties include affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.", "label": "Related Party [Domain]", "terseLabel": "Related Party [Domain]" } } }, "localname": "RelatedPartyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Related Party Transaction, Due from (to) Related Party, Current [Abstract]", "terseLabel": "Accounts Receivable and Payable with Affiliates [Abstract]" } } }, "localname": "RelatedPartyTransactionDueFromToRelatedPartyCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Related Party Transaction [Line Items]", "terseLabel": "Related Party Transaction [Line Items]" } } }, "localname": "RelatedPartyTransactionLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Related Party Transactions [Abstract]", "terseLabel": "Related Party Transactions [Abstract]" } } }, "localname": "RelatedPartyTransactionsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsByRelatedPartyAxis": { "auth_ref": [ "r473", "r710", "r714", "r765", "r766", "r767", "r768", "r769", "r770", "r771", "r772", "r773", "r774", "r775", "r776" ], "lang": { "en-us": { "role": { "documentation": "Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.", "label": "Related Party [Axis]", "terseLabel": "Related Party Transactions, by Related Party [Axis]" } } }, "localname": "RelatedPartyTransactionsByRelatedPartyAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": { "auth_ref": [ "r708", "r709", "r711", "r715", "r716" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.", "label": "Related Party Transactions Disclosure [Text Block]", "terseLabel": "Related Party Transactions" } } }, "localname": "RelatedPartyTransactionsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactions" ], "xbrltype": "textBlockItemType" }, "us-gaap_RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided": { "auth_ref": [ "r865", "r867" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Remaining balance of regulatory assets for which no return on investment during recovery is provided. In some cases, a regulator may permit an enterprise to include a cost that would be charged to expense by an unregulated enterprise as an allowable cost over a period of time by amortizing that cost for rate-making purposes, but the regulator does not include the unrecovered amount in the rate base.", "label": "Remaining Amounts of Regulatory Assets for which No Return on Investment During Recovery Period is Provided", "terseLabel": "Regulatory assets not currently earning a return" } } }, "localname": "RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RepaymentsOfLongTermDebt": { "auth_ref": [ "r122" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.", "label": "Repayments of Long-term Debt", "negatedLabel": "Repayment of long-term debt" } } }, "localname": "RepaymentsOfLongTermDebt", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r36", "r393", "r525", "r721", "r805", "r826", "r831" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 5.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings (Accumulated Deficit)", "terseLabel": "Retained earnings" } } }, "localname": "RetainedEarningsAccumulatedDeficit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsMember": { "auth_ref": [ "r2", "r162", "r163", "r164", "r169", "r178", "r180", "r269", "r521", "r522", "r523", "r561", "r562", "r640", "r822", "r824" ], "lang": { "en-us": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings [Member]", "terseLabel": "Retained Earnings" } } }, "localname": "RetainedEarningsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/AccountingPronouncementsRecentlyAdoptedDetails", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "domainItemType" }, "us-gaap_RetirementPlanTypeAxis": { "auth_ref": [ "r417", "r418", "r419", "r423", "r424", "r425", "r426", "r427", "r428", "r429", "r430", "r431", "r432", "r433", "r435", "r436", "r437", "r438", "r439", "r440", "r441", "r442", "r443", "r444", "r446", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r455", "r456", "r457", "r458", "r459", "r460", "r461", "r462", "r463", "r464", "r465", "r466", "r467", "r468", "r470", "r471", "r473", "r476", "r480", "r485", "r486", "r487", "r488", "r489", "r490", "r491", "r492", "r493", "r494", "r495", "r496", "r502", "r503", "r504", "r505", "r506", "r507", "r511", "r512", "r513", "r514" ], "lang": { "en-us": { "role": { "documentation": "Information by type of retirement benefit plan. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.", "label": "Retirement Plan Type [Axis]", "terseLabel": "Retirement Plan Type [Axis]" } } }, "localname": "RetirementPlanTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "stringItemType" }, "us-gaap_RetirementPlanTypeDomain": { "auth_ref": [ "r417", "r418", "r419", "r423", "r424", "r425", "r426", "r427", "r428", "r429", "r430", "r431", "r432", "r433", "r435", "r436", "r437", "r438", "r439", "r440", "r441", "r442", "r443", "r444", "r446", "r447", "r449", "r450", "r451", "r452", "r453", "r454", "r455", "r456", "r457", "r458", "r459", "r460", "r461", "r462", "r463", "r464", "r465", "r466", "r467", "r468", "r470", "r471", "r473", "r476", "r480", "r485", "r486", "r487", "r488", "r489", "r490", "r491", "r492", "r493", "r494", "r495", "r496", "r502", "r503", "r504", "r505", "r506", "r507", "r511", "r512", "r513", "r514" ], "lang": { "en-us": { "role": { "documentation": "Type of plan designed to provide participants with retirement benefits. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.", "label": "Retirement Plan Type [Domain]", "terseLabel": "Retirement Plan Type [Domain]" } } }, "localname": "RetirementPlanTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "domainItemType" }, "us-gaap_RevenueFromContractWithCustomerAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Revenue from Contract with Customer [Abstract]", "terseLabel": "Revenue from Contract with Customer [Abstract]" } } }, "localname": "RevenueFromContractWithCustomerAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax": { "auth_ref": [ "r205", "r206", "r219", "r225", "r226", "r232", "r233", "r235", "r402", "r403", "r758" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.", "label": "Revenue from Contract with Customer, Including Assessed Tax", "terseLabel": "Total revenue from contracts with customers" } } }, "localname": "RevenueFromContractWithCustomerIncludingAssessedTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenueFromContractWithCustomerTextBlock": { "auth_ref": [ "r394", "r395", "r396", "r397", "r398", "r399", "r400", "r401", "r404", "r416" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.", "label": "Revenue from Contract with Customer [Text Block]", "terseLabel": "Revenues" } } }, "localname": "RevenueFromContractWithCustomerTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/Revenues" ], "xbrltype": "textBlockItemType" }, "us-gaap_RevenueFromRelatedParties": { "auth_ref": [ "r110", "r339", "r341", "r342", "r348", "r349", "r350", "r835" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.", "label": "Revenue from Related Parties", "terseLabel": "Operating Revenue from Related Parties" } } }, "localname": "RevenueFromRelatedParties", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenueNotFromContractWithCustomer": { "auth_ref": [ "r103" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of revenue that is not accounted for under Topic 606.", "label": "Revenue Not from Contract with Customer", "terseLabel": "Alternative revenue and other" } } }, "localname": "RevenueNotFromContractWithCustomer", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenueRecognitionForAlternativeRevenueProgramsPolicy": { "auth_ref": [ "r875", "r876", "r877", "r878" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for revenue recognition related to alternative revenue programs. The major alternative revenue programs can generally be segregated into two categories, programs that adjust billings for the effects of weather abnormalities or broad external factors or to compensate the utility for demand-side management initiatives (for example, no-growth plans and similar conservation efforts); and programs that provide for additional billings (incentive awards) if the utility achieves certain objectives, such as reducing costs, reaching specified milestones, or demonstratively improving customer service.", "label": "Revenue Recognition for Alternative Revenue Programs, Policy [Policy Text Block]", "terseLabel": "Alternative Revenue Programs" } } }, "localname": "RevenueRecognitionForAlternativeRevenueProgramsPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_RevenueRecognitionPolicyTextBlock": { "auth_ref": [ "r142", "r143" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources.", "label": "Revenue [Policy Text Block]", "terseLabel": "Revenue From Contracts With Customers" } } }, "localname": "RevenueRecognitionPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_Revenues": { "auth_ref": [ "r103", "r146", "r205", "r206", "r219", "r225", "r226", "r232", "r233", "r235", "r265", "r336", "r337", "r338", "r341", "r342", "r343", "r345", "r347", "r349", "r350", "r666", "r790" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).", "label": "Revenues", "verboseLabel": "Total revenues" } } }, "localname": "Revenues", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenuesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Revenues [Abstract]", "terseLabel": "Operating revenues", "verboseLabel": "Revenues [Abstract]" } } }, "localname": "RevenuesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RevolvingCreditFacilityMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount.", "label": "Revolving Credit Facility [Member]", "terseLabel": "Revolving Credit Facility [Member]" } } }, "localname": "RevolvingCreditFacilityMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": { "auth_ref": [ "r701", "r705" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase in right-of-use asset obtained in exchange for operating lease liability.", "label": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability", "terseLabel": "Operating lease right-of-use assets" } } }, "localname": "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "monetaryItemType" }, "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r88", "r684", "r685" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of accumulated other comprehensive income (loss).", "label": "Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]", "verboseLabel": "Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax" } } }, "localname": "ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherComprehensiveIncomeTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock": { "auth_ref": [ "r445" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall.", "label": "Schedule of Allocation of Plan Assets [Table Text Block]", "verboseLabel": "Target Asset Allocations and Plan Assets Measured at Fair Value" } } }, "localname": "ScheduleOfAllocationOfPlanAssetsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAssetRetirementObligationsTableTextBlock": { "auth_ref": [ "r304" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the carrying amount of a liability for asset retirement obligations.", "label": "Schedule of Asset Retirement Obligations [Table Text Block]", "terseLabel": "Asset Retirement Obligations" } } }, "localname": "ScheduleOfAssetRetirementObligationsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r614" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of gain (loss) on derivative and nonderivative instruments designated and qualifying as cash flow hedge recorded in accumulated other comprehensive income (AOCI) and reclassified into earnings.", "label": "Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]", "terseLabel": "Financial Impact of Qualifying Cash Flow Hedges on Accumulated Other Comprehensive Loss" } } }, "localname": "ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": { "auth_ref": [ "r558" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.", "label": "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]", "terseLabel": "Schedule of Components of Income Tax Expense (Benefit)" } } }, "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDebtInstrumentsTextBlock": { "auth_ref": [ "r62", "r152", "r381", "r383", "r389", "r390", "r391", "r392", "r689", "r690", "r694", "r798" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.", "label": "Schedule of Long-term Debt Instruments [Table Text Block]", "terseLabel": "Schedule of Long-Term Debt" } } }, "localname": "ScheduleOfDebtInstrumentsTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock": { "auth_ref": [ "r550" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.", "label": "Schedule of Deferred Tax Assets and Liabilities [Table Text Block]", "terseLabel": "Schedule of Deferred Tax Assets and Liabilities" } } }, "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable": { "auth_ref": [ "r479", "r480", "r483", "r484", "r495" ], "lang": { "en-us": { "role": { "documentation": "Disclosures about an individual defined benefit pension plan or an other postretirement defined benefit plan. It may be appropriate to group certain similar plans. Also includes schedule for fair value of plan assets by major categories of plan assets by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), Significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Schedule of Defined Benefit Plans Disclosures [Table]", "terseLabel": "Schedule of Defined Benefit Plans Disclosures [Table]" } } }, "localname": "ScheduleOfDefinedBenefitPlansDisclosuresTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsBenefitPlansandOtherPostretirementBenefitsFairValueHierarchyDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementHealthCareBenefitsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock": { "auth_ref": [ "r608", "r615", "r620" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.", "label": "Derivative Instruments, Gain (Loss) [Table Text Block]", "terseLabel": "Impact of Derivative Activity on Accumulated Other Comprehensive Loss, Regulatory Assets and Liabilities, and Income" } } }, "localname": "ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDividendPaymentRestrictionsTextBlock": { "auth_ref": [ "r832" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure of statutory restrictions on the payment of dividends as prescribed by the National Association of Insurance Commissioners or state regulatory authorities.", "label": "Dividend Payment Restrictions [Text Block]", "terseLabel": "Dividend Payment Restrictions" } } }, "localname": "ScheduleOfDividendPaymentRestrictionsTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": { "auth_ref": [ "r535" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.", "label": "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]", "terseLabel": "Schedule of Effective Income Tax Rate Reconciliation" } } }, "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock": { "auth_ref": [ "r456" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter.", "label": "Schedule of Expected Benefit Payments [Table Text Block]", "terseLabel": "Projected Benefit Payments for the Pension and Postretirement Benefit Plans" } } }, "localname": "ScheduleOfExpectedBenefitPaymentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": { "auth_ref": [ "r644", "r645" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]", "terseLabel": "Derivative Assets and Liabilities Measured at Fair Value on a Recurring Basis by Hierarchy Level" } } }, "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfJointlyOwnedUtilityPlantsTextBlock": { "auth_ref": [ "r870" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants.", "label": "Schedule of Jointly Owned Utility Plants [Table Text Block]", "terseLabel": "Schedule of Jointly Owned Utility Plants" } } }, "localname": "ScheduleOfJointlyOwnedUtilityPlantsTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfLineOfCreditFacilitiesTextBlock": { "auth_ref": [ "r56" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.", "label": "Schedule of Line of Credit Facilities [Table Text Block]", "terseLabel": "Credit Facilities" } } }, "localname": "ScheduleOfLineOfCreditFacilitiesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfLongTermContractsForPurchaseOfElectricPowerTextBlock": { "auth_ref": [ "r862" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of information concerning the terms and significance of long term contracts to purchase power (generally referred to as purchase power agreements (PPAs) or power sale agreements (PSAs)) including date of contract expiration, share of plant output being purchased, estimated annual cost, annual minimum debt service payment required and amount of related long-term debt or lease obligations outstanding.", "label": "Schedule of Long-term Contracts for Purchase of Electric Power [Table Text Block]", "terseLabel": "Estimated Future Payments for Capacity and Energy Pursuant to Purchased Power Agreements" } } }, "localname": "ScheduleOfLongTermContractsForPurchaseOfElectricPowerTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock": { "auth_ref": [ "r333" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of maturity and sinking fund requirement for long-term debt.", "label": "Schedule of Maturities of Long-term Debt [Table Text Block]", "terseLabel": "Schedule of Maturities of Long-term Debt" } } }, "localname": "ScheduleOfMaturitiesOfLongTermDebtTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfNetBenefitCostsTableTextBlock": { "auth_ref": [ "r458" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.", "label": "Schedule of Net Benefit Costs [Table Text Block]", "terseLabel": "Components of Net Periodic Benefit Costs" } } }, "localname": "ScheduleOfNetBenefitCostsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfNetPeriodicBenefitCostNotYetRecognizedTableTextBlock": { "auth_ref": [ "r467" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation.", "label": "Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]", "terseLabel": "Amounts Not Yet Recognized as Components of Net Periodic Benefit Cost" } } }, "localname": "ScheduleOfNetPeriodicBenefitCostNotYetRecognizedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock": { "auth_ref": [ "r600" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the notional amounts of outstanding derivative positions.", "label": "Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]", "terseLabel": "Gross Notional Amounts of Commodity Forwards, Options, and FTRs" } } }, "localname": "ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FairValueofFinancialAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfPropertyPlantAndEquipmentTable": { "auth_ref": [ "r52", "r292" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.", "label": "Property, Plant and Equipment [Table]", "terseLabel": "Property, Plant and Equipment [Table]" } } }, "localname": "ScheduleOfPropertyPlantAndEquipmentTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock": { "auth_ref": [ "r50", "r863" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of public utility physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, deprecation expense and method used, including composite depreciation, and accumulated deprecation.", "label": "Public Utility Property, Plant, and Equipment [Table Text Block]", "terseLabel": "Public Utility Property, Plant, and Equipment" } } }, "localname": "ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/PropertyPlantandEquipmentTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock": { "auth_ref": [ "r188" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.", "label": "Quarterly Financial Information [Table Text Block]", "terseLabel": "Summarized Quarterly Financial Data (Unaudited)" } } }, "localname": "ScheduleOfQuarterlyFinancialInformationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummarizedQuarterlyFinancialDataUnauditedTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for detailed information about regulatory assets and liabilities, including current and noncurrent assets created when regulatory agencies permit the deferral of costs to the balance sheet that would otherwise be required to appear on the company's income statement and would be charged against current expenses or revenues, as well as current and noncurrent liabilities created when regulatory agencies permit.", "label": "Schedule of Regulatory Assets and Liabilities [Text Block]", "verboseLabel": "Regulatory Assets and Liabilities" } } }, "localname": "ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilities" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRegulatoryAssetsTable": { "auth_ref": [ "r865", "r866", "r879" ], "lang": { "en-us": { "role": { "documentation": "A table of assets that are created when regulatory agencies permit public utilities to defer certain costs that are included in rate-setting to the balance sheet.", "label": "Schedule of Regulatory Assets [Table]", "terseLabel": "Schedule of Regulatory Assets [Table]" } } }, "localname": "ScheduleOfRegulatoryAssetsTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfRegulatoryAssetsTextBlock": { "auth_ref": [ "r865", "r866", "r879" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet.", "label": "Schedule of Regulatory Assets [Table Text Block]", "verboseLabel": "Regulatory Assets" } } }, "localname": "ScheduleOfRegulatoryAssetsTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRegulatoryLiabilitiesTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A table of liabilities that are created when regulatory agencies permit public utilities to defer recognition of certain revenues included in rate-setting.", "label": "Schedule of Regulatory Liabilities [Table]", "terseLabel": "Schedule of Regulatory Liabilities [Table]" } } }, "localname": "ScheduleOfRegulatoryLiabilitiesTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesRegulatoryLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock": { "auth_ref": [ "r871" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.", "label": "Schedule of Regulatory Liabilities [Table Text Block]", "verboseLabel": "Regulatory Liabilities" } } }, "localname": "ScheduleOfRegulatoryLiabilitiesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RegulatoryAssetsandLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": { "auth_ref": [ "r712", "r714" ], "lang": { "en-us": { "role": { "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.", "label": "Schedule of Related Party Transactions, by Related Party [Table]", "terseLabel": "Schedule of Related Party Transactions, by Related Party [Table]" } } }, "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates.", "label": "Schedule of Related Party Transactions [Table Text Block]", "terseLabel": "Related Party Transactions" } } }, "localname": "ScheduleOfRelatedPartyTransactionsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RelatedPartyTransactionsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable": { "auth_ref": [ "r214", "r217", "r223", "r289" ], "lang": { "en-us": { "role": { "documentation": "A table disclosing the profit or loss and total assets for each reportable segment of the entity. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.", "label": "Schedule of Segment Reporting Information, by Segment [Table]", "terseLabel": "Schedule of Segment Reporting Information, by Segment [Table]" } } }, "localname": "ScheduleOfSegmentReportingInformationBySegmentTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock": { "auth_ref": [ "r214", "r217", "r223", "r289" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.", "label": "Schedule of Segment Reporting Information, by Segment [Table Text Block]", "terseLabel": "Results from Operations by Reportable Segment" } } }, "localname": "ScheduleOfSegmentReportingInformationBySegmentTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfShortTermDebtTable": { "auth_ref": [ "r57" ], "lang": { "en-us": { "role": { "documentation": "A table or schedule providing information pertaining to borrowings under which repayment was required in less than twelve months (or normal operating cycle, if longer) after its issuance. It may include: (1) description of the short-term debt arrangement; (2) identification of the lender or type of lender; (3) repayment terms; (4) weighted average interest rate; (5) carrying amount of funds borrowed under the specified short-term debt arrangement as of the balance sheet date and measures of the maximum and average amount outstanding during the period; (6) description of the refinancing of a short-term obligation when that obligation is excluded from current liabilities in the balance sheet; and (7) amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation.", "label": "Schedule of Short-term Debt [Table]", "terseLabel": "Schedule of Short-term Debt [Table]" } } }, "localname": "ScheduleOfShortTermDebtTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShortTermDebtTextBlock": { "auth_ref": [ "r57" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of short-term debt arrangements (having initial terms of repayment within one year or the normal operating cycle, if longer) including: (1) description of the short-term debt arrangement; (2) identification of the lender or type of lender; (3) repayment terms; (4) weighted average interest rate; (5) carrying amount of funds borrowed under the specified short-term debt arrangement as of the balance sheet date; (6) description of the refinancing of a short-term obligation when that obligation is excluded from current liabilities in the balance sheet; and (7) amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation.", "label": "Schedule of Short-term Debt [Table Text Block]", "terseLabel": "Short Term Debt" } } }, "localname": "ScheduleOfShortTermDebtTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BorrowingsandOtherFinancingInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfUtilityInventoryTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of all information related to inventories for utilities.", "label": "Schedule of Utility Inventory [Table Text Block]", "terseLabel": "Schedule of Utility Inventory [Table Text Block]" } } }, "localname": "ScheduleOfUtilityInventoryTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesSummaryofSignificantAccountingPoliciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfVariableInterestEntitiesTable": { "auth_ref": [ "r585", "r586", "r590", "r591", "r592", "r593", "r594", "r595", "r596" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of qualitative and quantitative information related to variable interests the entity holds, whether or not such variable interest entity (VIE) is included in the reporting entity's consolidated financial statements. Includes, but is not limited to, description of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a tabular comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.", "label": "Schedule of Variable Interest Entities [Table]", "terseLabel": "Schedule of Variable Interest Entities [Table]" } } }, "localname": "ScheduleOfVariableInterestEntitiesTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesVariableInterestEntitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SegmentDomain": { "auth_ref": [ "r202", "r205", "r206", "r207", "r208", "r209", "r210", "r211", "r212", "r213", "r214", "r215", "r216", "r219", "r220", "r221", "r222", "r224", "r225", "r226", "r227", "r228", "r230", "r235", "r309", "r310", "r815" ], "lang": { "en-us": { "role": { "documentation": "Components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity.", "label": "Segments [Domain]", "terseLabel": "Segment [Domain]" } } }, "localname": "SegmentDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SegmentReportingAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Segment Reporting [Abstract]", "terseLabel": "Segment Reporting [Abstract]" } } }, "localname": "SegmentReportingAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_SegmentReportingDisclosureTextBlock": { "auth_ref": [ "r202", "r203", "r204", "r214", "r218", "r224", "r228", "r229", "r230", "r231", "r232", "r234", "r235", "r236" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.", "label": "Segment Reporting Disclosure [Text Block]", "verboseLabel": "Segment Information" } } }, "localname": "SegmentReportingDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformation" ], "xbrltype": "textBlockItemType" }, "us-gaap_SegmentReportingInformationLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Segment Reporting Information [Line Items]", "terseLabel": "Segment Reporting Information [Line Items]" } } }, "localname": "SegmentReportingInformationLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortTermBorrowings": { "auth_ref": [ "r26", "r721", "r779", "r802" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 4.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.", "label": "Short-term Debt", "terseLabel": "Short-term Debt", "verboseLabel": "Short-term debt" } } }, "localname": "ShortTermBorrowings", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortTermDebtLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Short-term Debt [Line Items]", "terseLabel": "Short-term Debt [Line Items]" } } }, "localname": "ShortTermDebtLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortTermDebtTypeAxis": { "auth_ref": [ "r57" ], "lang": { "en-us": { "role": { "documentation": "Information by type of short-term debt arrangement.", "label": "Short-term Debt, Type [Axis]", "terseLabel": "Short-term Debt, Type [Axis]" } } }, "localname": "ShortTermDebtTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails", "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortTermDebtTypeDomain": { "auth_ref": [ "r54" ], "lang": { "en-us": { "role": { "documentation": "Type of short-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing.", "label": "Short-term Debt, Type [Domain]", "terseLabel": "Short-term Debt, Type [Domain]" } } }, "localname": "ShortTermDebtTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CreditFacilitiesDetails", "http://www.xcelenergy.com/role/LettersofCreditDetails", "http://www.xcelenergy.com/role/LongTermDebtDetails", "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortTermDebtWeightedAverageInterestRate": { "auth_ref": [ "r55" ], "lang": { "en-us": { "role": { "documentation": "Weighted average interest rate of short-term debt outstanding calculated at point in time.", "label": "Short-term Debt, Weighted Average Interest Rate, at Point in Time", "terseLabel": "Short-term Debt, Weighted Average Interest Rate, at Point in Time" } } }, "localname": "ShortTermDebtWeightedAverageInterestRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShortTermLeaseCost": { "auth_ref": [ "r700", "r705" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of short-term lease cost, excluding expense for lease with term of one month or less.", "label": "Short-term Lease, Cost", "terseLabel": "Short-term Lease, Cost" } } }, "localname": "ShortTermLeaseCost", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShorttermDebtAverageOutstandingAmount": { "auth_ref": [ "r889", "r890" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.", "label": "Short-term Debt, Average Outstanding Amount", "terseLabel": "Short-term Debt, Average Outstanding Amount" } } }, "localname": "ShorttermDebtAverageOutstandingAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShorttermDebtMaximumAmountOutstandingDuringPeriod": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, the maximum amount borrowed at any time during the period.", "label": "Short-term Debt, Maximum Amount Outstanding During Period", "terseLabel": "Short-term Debt, Maximum Amount Outstanding During Period" } } }, "localname": "ShorttermDebtMaximumAmountOutstandingDuringPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ShortTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SignificantAccountingPoliciesTextBlock": { "auth_ref": [ "r139", "r161" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for all significant accounting policies of the reporting entity.", "label": "Significant Accounting Policies [Text Block]", "verboseLabel": "Summary of Significant Accounting Policies" } } }, "localname": "SignificantAccountingPoliciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_StateAndLocalJurisdictionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Designated tax department of a state or local government entitled to levy and collect income taxes from the entity.", "label": "State and Local Jurisdiction [Member]", "terseLabel": "State and Local Jurisdiction" } } }, "localname": "StateAndLocalJurisdictionMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "domainItemType" }, "us-gaap_StatementBusinessSegmentsAxis": { "auth_ref": [ "r6", "r202", "r205", "r206", "r207", "r208", "r209", "r210", "r211", "r212", "r213", "r214", "r215", "r216", "r219", "r220", "r221", "r222", "r224", "r225", "r226", "r227", "r228", "r230", "r235", "r289", "r293", "r309", "r310", "r815" ], "lang": { "en-us": { "role": { "documentation": "Information by business segments.", "label": "Segments [Axis]", "terseLabel": "Segments [Axis]" } } }, "localname": "StatementBusinessSegmentsAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RevenuesRevenuesDetails", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r2", "r66", "r98", "r99", "r100", "r162", "r163", "r164", "r169", "r178", "r180", "r191", "r269", "r388", "r393", "r521", "r522", "r523", "r561", "r562", "r640", "r679", "r680", "r681", "r682", "r683", "r685", "r822", "r823", "r824", "r916" ], "lang": { "en-us": { "role": { "documentation": "Information by component of equity.", "label": "Equity Components [Axis]", "terseLabel": "Equity Components [Axis]" } } }, "localname": "StatementEquityComponentsAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/AccountingPronouncementsRecentlyAdoptedDetails", "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY", "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Statement [Line Items]", "terseLabel": "Statement [Line Items]" } } }, "localname": "StatementLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "stringItemType" }, "us-gaap_StatementOfCashFlowsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Statement of Cash Flows [Abstract]", "terseLabel": "Statement of Cash Flows [Abstract]" } } }, "localname": "StatementOfCashFlowsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfFinancialPositionAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Statement of Financial Position [Abstract]", "terseLabel": "Statement of Financial Position [Abstract]" } } }, "localname": "StatementOfFinancialPositionAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Statement of Comprehensive Income [Abstract]", "terseLabel": "Statement of Comprehensive Income [Abstract]" } } }, "localname": "StatementOfIncomeAndComprehensiveIncomeAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Statement of Stockholders' Equity [Abstract]", "terseLabel": "Statement of Stockholders' Equity [Abstract]" } } }, "localname": "StatementOfStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementTable": { "auth_ref": [ "r162", "r163", "r164", "r191", "r758" ], "lang": { "en-us": { "role": { "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.", "label": "Statement [Table]", "terseLabel": "Statement [Table]" } } }, "localname": "StatementTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r32", "r38", "r39", "r146", "r245", "r265", "r666", "r721" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.", "label": "Stockholders' Equity Attributable to Parent", "periodEndLabel": "Accumulated other comprehensive (loss) income at end of period", "periodStartLabel": "Accumulated other comprehensive loss at Jan. 1", "totalLabel": "Total common stockholder's equity" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS", "http://www.xcelenergy.com/role/OtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest": { "auth_ref": [ "r2", "r3", "r99", "r146", "r162", "r163", "r164", "r169", "r178", "r265", "r269", "r393", "r521", "r522", "r523", "r561", "r562", "r581", "r582", "r597", "r640", "r666", "r679", "r680", "r685", "r823", "r824", "r916" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.", "label": "Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest", "periodEndLabel": "Balance at end of period", "periodStartLabel": "Balance at beginning of period" } } }, "localname": "StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCOMMONSTOCKHOLDERSEQUITY" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityNoteAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Stockholders' Equity Note [Abstract]", "terseLabel": "Stockholders' Equity Note [Abstract]" } } }, "localname": "StockholdersEquityNoteAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventMember": { "auth_ref": [ "r686", "r722" ], "lang": { "en-us": { "role": { "documentation": "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event [Member]", "terseLabel": "Subsequent Event" } } }, "localname": "SubsequentEventMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventTypeAxis": { "auth_ref": [ "r686", "r722" ], "lang": { "en-us": { "role": { "documentation": "Information by event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event Type [Axis]", "terseLabel": "Subsequent Event Type [Axis]" } } }, "localname": "SubsequentEventTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventTypeDomain": { "auth_ref": [ "r686", "r722" ], "lang": { "en-us": { "role": { "documentation": "Event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event Type [Domain]", "terseLabel": "Subsequent Event Type [Domain]" } } }, "localname": "SubsequentEventTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPensionPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsPostretirementBenefitPlanBenefitObligationsCashFlowsandBenefitCostsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsProjectedBenefitPaymentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventsPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for reporting subsequent events.", "label": "Subsequent Events, Policy [Policy Text Block]", "terseLabel": "Subsequent Events" } } }, "localname": "SubsequentEventsPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_SummaryOfIncomeTaxContingenciesTextBlock": { "auth_ref": [ "r538", "r546", "r548" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.", "label": "Summary of Income Tax Contingencies [Table Text Block]", "terseLabel": "Reconciliation of Unrecognized Tax Benefits" } } }, "localname": "SummaryOfIncomeTaxContingenciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_SupplementalCashFlowInformationAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Supplemental Cash Flow Information [Abstract]", "terseLabel": "Supplemental disclosure of cash flow information:" } } }, "localname": "SupplementalCashFlowInformationAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" ], "xbrltype": "stringItemType" }, "us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions": { "auth_ref": [ "r526", "r527" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.", "label": "Tax Adjustments, Settlements, and Unusual Provisions", "terseLabel": "Tax Adjustments, Settlements, and Unusual Provisions" } } }, "localname": "TaxAdjustmentsSettlementsAndUnusualProvisions", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/FederalLossCarryback" ], "xbrltype": "monetaryItemType" }, "us-gaap_TaxCreditCarryforwardAmount": { "auth_ref": [ "r553" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.", "label": "Tax Credit Carryforward, Amount", "terseLabel": "Federal tax credit carryforwards" } } }, "localname": "TaxCreditCarryforwardAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_TaxCreditCarryforwardValuationAllowance": { "auth_ref": [ "r549" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized.", "label": "Tax Credit Carryforward, Valuation Allowance", "negatedTerseLabel": "NOL and tax credit valuation allowances" } } }, "localname": "TaxCreditCarryforwardValuationAllowance", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/OtherIncomeTaxMatters" ], "xbrltype": "monetaryItemType" }, "us-gaap_TaxesOther": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 1.0, "parentTag": "us-gaap_CostsAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of tax expense classified as other.", "label": "Taxes, Other", "terseLabel": "Taxes (other than income taxes)" } } }, "localname": "TaxesOther", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_TaxesPayableCurrent": { "auth_ref": [ "r58" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS": { "order": 10.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Taxes Payable, Current", "terseLabel": "Taxes accrued" } } }, "localname": "TaxesPayableCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDBALANCESHEETS" ], "xbrltype": "monetaryItemType" }, "us-gaap_TradeAndOtherAccountsReceivablePolicy": { "auth_ref": [ "r239", "r240", "r241", "r242", "r244", "r246" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for accounts receivable.", "label": "Accounts Receivable [Policy Text Block]", "terseLabel": "Accounts Receivable and Allowance for Bad Debts" } } }, "localname": "TradeAndOtherAccountsReceivablePolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_TradingSecurities": { "auth_ref": [ "r784" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).", "label": "Debt Securities, Trading, and Equity Securities, FV-NI", "terseLabel": "Mutual funds" } } }, "localname": "TradingSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": { "auth_ref": [ "r259", "r260", "r262", "r263", "r264", "r377", "r387", "r630", "r724", "r725", "r726", "r727", "r728", "r729", "r730", "r731", "r732", "r733", "r734", "r735", "r736", "r738", "r739", "r740", "r741", "r742", "r743", "r744", "r745", "r746", "r747", "r748", "r749", "r750", "r751", "r752", "r753", "r754", "r889", "r890", "r891", "r892", "r893", "r894", "r895" ], "lang": { "en-us": { "role": { "documentation": "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms.", "label": "Financial Instruments [Domain]", "terseLabel": "Financial Instruments [Domain]" } } }, "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPensionPlanAssetsDetails", "http://www.xcelenergy.com/role/BenefitPlansandOtherPostretirementBenefitsFairValueofPostretirementBenefitPlanAssetsDetails", "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails", "http://www.xcelenergy.com/role/RabbiTrustDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UnamortizedDebtIssuanceExpense": { "auth_ref": [ "r53" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.", "label": "Unamortized Debt Issuance Expense", "negatedTerseLabel": "Unamortized debt expense" } } }, "localname": "UnamortizedDebtIssuanceExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain": { "auth_ref": [ "r311", "r312", "r314", "r316" ], "lang": { "en-us": { "role": { "documentation": "General description of the goods or services to be purchased from the counterparty to the unconditional purchase arrangement.", "label": "Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain]", "terseLabel": "Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain]" } } }, "localname": "UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UnrealizedGainOnSecurities": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease), resulting in a gain, in the difference between the fair value and the carrying value, or in the comparative fair values, of securities held at each balance sheet date, that was included in earnings for the period.", "label": "Unrealized Gain on Securities", "terseLabel": "Unrealized Gain on Securities" } } }, "localname": "UnrealizedGainOnSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrealizedLossOnSecurities": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease), resulting in a loss, in the difference between the fair value and the carrying value, or in the comparative fair values, of securities held at each balance sheet date, that was included in earnings for the period.", "label": "Unrealized Loss on Securities", "terseLabel": "Unrealized Loss on Securities" } } }, "localname": "UnrealizedLossOnSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/NuclearDecommissioningFundDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefits": { "auth_ref": [ "r528", "r542" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of unrecognized tax benefits.", "label": "Unrecognized Tax Benefits", "terseLabel": "Total unrecognized tax benefit" } } }, "localname": "UnrecognizedTaxBenefits", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions": { "auth_ref": [ "r544" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.", "label": "Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions", "negatedTerseLabel": "Reductions based on tax positions related to the current year" } } }, "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions": { "auth_ref": [ "r543" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.", "label": "Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions", "negatedTerseLabel": "Reductions for tax positions of prior years" } } }, "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense": { "auth_ref": [ "r537" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of expense for penalties related to a tax position claimed or expected to be claimed in the tax return.", "label": "Unrecognized Tax Benefits, Income Tax Penalties Expense", "terseLabel": "Unrecognized Tax Benefits, Income Tax Penalties Expense" } } }, "localname": "UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions": { "auth_ref": [ "r544" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.", "label": "Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions", "terseLabel": "Additions based on tax positions related to the current year" } } }, "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions": { "auth_ref": [ "r543" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.", "label": "Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions", "terseLabel": "Additions for tax positions of prior years" } } }, "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense": { "auth_ref": [ "r537" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of interest expense for an underpayment of income taxes.", "label": "Unrecognized Tax Benefits, Interest on Income Taxes Expense", "negatedTerseLabel": "Interest expense related to unrecognized tax benefits" } } }, "localname": "UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate": { "auth_ref": [ "r545" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.", "label": "Unrecognized Tax Benefits that Would Impact Effective Tax Rate", "terseLabel": "Unrecognized tax benefit \u2014 Permanent tax positions" } } }, "localname": "UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/UnrecognizedTaxBenefits" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]", "terseLabel": "Fuel Contracts [Abstract]", "verboseLabel": "Estimated Future Payments Under PPAs [Abstract]" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary": { "auth_ref": [ "r312" ], "calculation": { "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails": { "order": 5.0, "parentTag": "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five", "terseLabel": "2026" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary": { "auth_ref": [ "r312" ], "calculation": { "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails": { "order": 1.0, "parentTag": "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Unrecorded Unconditional Purchase Obligation, to be Paid, Year One", "terseLabel": "2022" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary": { "auth_ref": [ "r312" ], "calculation": { "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails": { "order": 4.0, "parentTag": "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four", "terseLabel": "2025" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary": { "auth_ref": [ "r312" ], "calculation": { "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails": { "order": 2.0, "parentTag": "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two", "terseLabel": "2023" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary": { "auth_ref": [ "r312" ], "calculation": { "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails": { "order": 3.0, "parentTag": "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Unrecorded Unconditional Purchase Obligation, to be Paid, Year Three", "terseLabel": "2024" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount": { "auth_ref": [ "r312" ], "calculation": { "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).", "label": "Unrecorded Unconditional Purchase Obligation", "totalLabel": "Total" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis": { "auth_ref": [ "r311", "r312", "r314" ], "lang": { "en-us": { "role": { "documentation": "Pertinent information about unrecorded unconditional purchase arrangements to acquire goods or services, by category of goods or services. arrangements to acquire goods or services, by category of goods or services.", "label": "Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis]", "terseLabel": "Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis]" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesEnvironmentalRequirementsWaterandWasteDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears": { "auth_ref": [ "r312" ], "calculation": { "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails": { "order": 6.0, "parentTag": "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Unrecorded Unconditional Purchase Obligation, to be Paid, after Year Five", "terseLabel": "Thereafter", "verboseLabel": "Thereafter" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails", "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Unrecorded Unconditional Purchase Obligation [Line Items]", "terseLabel": "Unrecorded Unconditional Purchase Obligation [Line Items]" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationTable": { "auth_ref": [ "r311", "r312", "r314" ], "lang": { "en-us": { "role": { "documentation": "Describes each unrecorded unconditional purchase obligation arrangement to purchase goods and services that extend over multiple periods, any assets pledged to secure payment, and the fixed or determinable amount of payments due in each of the next five years and thereafter.", "label": "Unrecorded Unconditional Purchase Obligation [Table]", "terseLabel": "Unrecorded Unconditional Purchase Obligation [Table]" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesFuelContractsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock": { "auth_ref": [ "r315" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of unconditional purchase obligation not recognized as liability.", "label": "Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]", "terseLabel": "Estimated Minimum Purchases Under Fuel Contracts" } } }, "localname": "UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_UnregulatedOperatingRevenue": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 3.0, "parentTag": "us-gaap_RegulatedAndUnregulatedOperatingRevenue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount of unregulated operating revenues recognized during the period.", "label": "Unregulated Operating Revenue", "terseLabel": "Other" } } }, "localname": "UnregulatedOperatingRevenue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UseOfEstimates": { "auth_ref": [ "r192", "r193", "r194", "r195", "r198", "r199", "r200" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.", "label": "Use of Estimates, Policy [Policy Text Block]", "terseLabel": "Use of Estimates" } } }, "localname": "UseOfEstimates", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization": { "auth_ref": [ "r111" ], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 4.0, "parentTag": "us-gaap_CostsAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of operating expense for depreciation and amortization of regulated operation.", "label": "Utilities Operating Expense, Depreciation and Amortization", "terseLabel": "Depreciation and amortization" } } }, "localname": "UtilitiesOperatingExpenseDepreciationAndAmortization", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME", "http://www.xcelenergy.com/role/SegmentsandRelatedInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses": { "auth_ref": [], "calculation": { "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME": { "order": 6.0, "parentTag": "us-gaap_CostsAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of operating expenses for the period that are associated with the utility's normal revenue producing operation; including selling, general, and administrative expenses, costs incurred for routine plant repairs and maintenance, and operations.", "label": "Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses", "terseLabel": "Operating and maintenance expenses" } } }, "localname": "UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" ], "xbrltype": "monetaryItemType" }, "us-gaap_UtilitiesOperatingExpensePurchasedPowerUnderLongTermContracts": { "auth_ref": [ "r111", "r861" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of operating expense for purchased power procured under arrangements extending beyond one year or the normal operating cycle, if longer, by regulated operation.", "label": "Utilities Operating Expense, Purchased Power under Long-term Contracts", "verboseLabel": "Purchased power expense" } } }, "localname": "UtilitiesOperatingExpensePurchasedPowerUnderLongTermContracts", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesPurchasedPowerAgreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UtilityRevenueAndExpenseRecognitionPolicy": { "auth_ref": [ "r860" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policies and anticipated effects of regulatory rulings and on rate-setting regarding revenues and expenses incurred and recovered, including billed and unbilled revenues, revenues collected subject to refund, taxes collected from customers and remitted to governmental authorities, and postretirement benefits.", "label": "Utility, Revenue and Expense Recognition, Policy [Policy Text Block]", "terseLabel": "Regulatory Accounting" } } }, "localname": "UtilityRevenueAndExpenseRecognitionPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ValuationAllowancesAndReservesBalance": { "auth_ref": [ "r153", "r159" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of valuation and qualifying accounts and reserves.", "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount", "periodEndLabel": "Balance at Dec. 31", "periodStartLabel": "Balance at Jan. 1" } } }, "localname": "ValuationAllowancesAndReservesBalance", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense": { "auth_ref": [ "r156" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.", "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense", "terseLabel": "Charged to costs and expenses" } } }, "localname": "ValuationAllowancesAndReservesChargedToCostAndExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts": { "auth_ref": [ "r157" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense.", "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Other Account", "terseLabel": "Charged to other accounts" } } }, "localname": "ValuationAllowancesAndReservesChargedToOtherAccounts", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValuationAllowancesAndReservesDeductions": { "auth_ref": [ "r158" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of decrease in valuation and qualifying accounts and reserves.", "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction", "negatedTerseLabel": "Deductions from reserves" } } }, "localname": "ValuationAllowancesAndReservesDeductions", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValuationAllowancesAndReservesDomain": { "auth_ref": [ "r153", "r154", "r155", "r158", "r159" ], "lang": { "en-us": { "role": { "documentation": "Valuation and qualifying accounts and reserves.", "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]", "terseLabel": "SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]" } } }, "localname": "ValuationAllowancesAndReservesDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ValuationAllowancesAndReservesTypeAxis": { "auth_ref": [ "r153", "r154", "r155", "r158", "r159" ], "lang": { "en-us": { "role": { "documentation": "Information by valuation and qualifying accounts and reserves.", "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]", "terseLabel": "SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]" } } }, "localname": "ValuationAllowancesAndReservesTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/ScheduleIIValuationandQualifyingAccountsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_VariableInterestEntityLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Variable Interest Entity [Line Items]", "terseLabel": "Variable Interest Entity [Line Items]" } } }, "localname": "VariableInterestEntityLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://www.xcelenergy.com/role/CommitmentsandContingenciesVariableInterestEntitiesDetails" ], "xbrltype": "stringItemType" } }, "unitCount": 14 } }, "std_ref": { "r0": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "105", "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695" }, "r1": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "105", "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695" }, "r10": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r100": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124452729-227067" }, "r101": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124507222&loc=d3e1436-108581" }, "r102": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(210.5-03(11))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r103": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(1))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r104": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(10))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r105": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(20))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r106": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(21))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(24))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r108": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(5))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r11": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.1(e))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.2(b))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r112": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.2)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r113": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.8)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r114": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.9)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r115": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "220", "URI": "http://asc.fasb.org/topic&trid=2134417" }, "r116": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585" }, "r117": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585" }, "r118": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585" }, "r12": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r120": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585" }, "r121": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585" }, "r122": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585" }, "r123": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585" }, "r126": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585" }, "r127": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585" }, "r128": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r13": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585" }, "r133": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4273-108586" }, "r134": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4297-108586" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586" }, "r136": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586" }, "r137": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586" }, "r138": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=SL98516268-108586" }, "r139": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18726-107790" }, "r14": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6801-107765" }, "r140": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790" }, "r142": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790" }, "r143": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(c))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(f))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(g)(1)(ii))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r147": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(h)(1)(Note 1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r148": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(h)(2))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r149": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(h))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r15": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6904-107765" }, "r150": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(k)(1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r151": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(n))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r152": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-04(a))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690" }, "r153": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09(Column B))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690" }, "r154": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09(Column C(1)))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09(Column C(2)))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09(Column C)(1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09(Column C)(2))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09(Column D))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09(Column E))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690" }, "r16": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6911-107765" }, "r160": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690" }, "r161": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "235", "URI": "http://asc.fasb.org/topic&trid=2122369" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21914-107793" }, "r163": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21930-107793" }, "r164": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21711-107793" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21728-107793" }, "r166": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(1)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(2)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r169": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(3)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r17": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6935-107765" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(4)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794" }, "r175": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794" }, "r177": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22595-107794" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794" }, "r179": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22658-107794" }, "r18": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e7018-107765" }, "r180": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22663-107794" }, "r181": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 11.M.Q2)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=122038215&loc=d3e31137-122693" }, "r182": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=122038215&loc=SL108384541-122693" }, "r183": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "250", "URI": "http://asc.fasb.org/topic&trid=2122394" }, "r184": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "255", "URI": "http://asc.fasb.org/extlink&oid=125523840&loc=d3e2408-110839" }, "r185": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125512782&loc=d3e3842-109258" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=124437754&loc=d3e543-108305" }, "r188": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=124502072&loc=d3e1280-108306" }, "r189": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=124502072&loc=SL124452896-108306" }, "r19": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766" }, "r190": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "270", "URI": "http://asc.fasb.org/topic&trid=2126967" }, "r191": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=125520817&loc=d3e70191-108054" }, "r192": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r193": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r194": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592" }, "r195": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592" }, "r196": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592" }, "r2": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "105", "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695" }, "r20": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592" }, "r201": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "275", "URI": "http://asc.fasb.org/topic&trid=2134479" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599" }, "r203": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599" }, "r204": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599" }, "r205": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r206": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r209": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r21": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(11))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r210": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r211": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r212": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(j)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r214": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599" }, "r217": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "26", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599" }, "r219": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r22": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(12))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r220": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r221": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "31", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599" }, "r225": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r227": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r228": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r229": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r23": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(13))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r231": { "Name": "Accounting Standards Codification", "Paragraph": "34", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599" }, "r232": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "41", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "41", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599" }, "r235": { "Name": "Accounting Standards Codification", "Paragraph": "42", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599" }, "r236": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "280", "URI": "http://asc.fasb.org/topic&trid=2134510" }, "r237": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522" }, "r238": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522" }, "r239": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=123577603&loc=d3e4975-111524" }, "r24": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(14))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r240": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524" }, "r241": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524" }, "r242": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=123577603&loc=d3e5033-111524" }, "r243": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524" }, "r244": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=123577603&loc=d3e5093-111524" }, "r245": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 4.E)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=122038336&loc=d3e74512-122707" }, "r246": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84159169&loc=d3e10133-111534" }, "r247": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=124402435&loc=SL124402458-218513" }, "r248": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=124402435&loc=SL124402458-218513" }, "r249": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(d)(1)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=124402435&loc=SL124402458-218513" }, "r25": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(19)(a)(5))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r250": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(d)(2)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=124402435&loc=SL124402458-218513" }, "r251": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562" }, "r252": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563" }, "r253": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563" }, "r254": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27198-111563" }, "r255": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27198-111563" }, "r256": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27198-111563" }, "r257": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27198-111563" }, "r258": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27198-111563" }, "r259": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563" }, "r26": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(19)(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r260": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=SL120269820-111563" }, "r261": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "320", "URI": "http://asc.fasb.org/topic&trid=2196928" }, "r262": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "321", "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714" }, "r263": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "321", "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714" }, "r264": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "321", "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714" }, "r265": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "323", "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571" }, "r266": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r267": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r268": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r269": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r27": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(19))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r270": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(1)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r271": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(2)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r272": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(3)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r273": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(4)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r274": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446" }, "r275": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919244-210447" }, "r276": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447" }, "r277": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447" }, "r278": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447" }, "r279": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447" }, "r28": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(2))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r280": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447" }, "r281": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454" }, "r282": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455" }, "r283": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922895-210455" }, "r284": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455" }, "r285": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456" }, "r286": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "330", "URI": "http://asc.fasb.org/extlink&oid=116847112&loc=d3e4492-108314" }, "r287": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "330", "URI": "http://asc.fasb.org/extlink&oid=116847112&loc=d3e4556-108314" }, "r288": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "330", "URI": "http://asc.fasb.org/topic&trid=2126998" }, "r289": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267" }, "r29": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(20))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r290": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r291": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r292": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r293": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r294": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "360", "URI": "http://asc.fasb.org/topic&trid=2155823" }, "r295": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "15", "SubTopic": "30", "Topic": "405", "URI": "http://asc.fasb.org/extlink&oid=99384745&loc=d3e23169-109297" }, "r296": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "35", "SubTopic": "20", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392603&loc=d3e7123-110846" }, "r297": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848" }, "r298": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849" }, "r299": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849" }, "r3": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "105", "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695" }, "r30": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(22))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r300": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(1)", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849" }, "r301": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849" }, "r302": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(3)", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849" }, "r303": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(4)", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849" }, "r304": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849" }, "r305": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859" }, "r306": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6393242&loc=d3e13283-110859" }, "r307": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859" }, "r308": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "410", "URI": "http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859" }, "r309": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r31": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(24))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r310": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.4(d))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747" }, "r311": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r312": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r313": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r314": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r315": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r316": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25383-109308" }, "r317": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "440", "URI": "http://asc.fasb.org/topic&trid=2144648" }, "r318": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349" }, "r319": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349" }, "r32": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(29))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r320": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14394-108349" }, "r321": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349" }, "r322": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349" }, "r323": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14453-108349" }, "r324": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14472-108349" }, "r325": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349" }, "r326": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349" }, "r327": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Subparagraph": "(SAB TOPIC 5.Y.Q2)", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751" }, "r328": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "450", "URI": "http://asc.fasb.org/topic&trid=2127136" }, "r329": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=124440162&loc=d3e12021-110248" }, "r33": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(3)(a)(2))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r330": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=124440162&loc=d3e12053-110248" }, "r331": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248" }, "r332": { "Name": "Accounting Standards Codification", "Paragraph": "12A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=99376301&loc=SL5988623-112600" }, "r333": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601" }, "r334": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123465755&loc=SL6230698-112601" }, "r335": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S65", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359872&loc=SL124427846-239511" }, "r336": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(i))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r337": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(ii))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r338": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii)(A))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r339": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii)(B))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r34": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r340": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r341": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iv))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r342": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(5))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r343": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(i))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r344": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(A)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r345": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(A))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r346": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(B)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r347": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(B))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r348": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(C))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r349": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iv))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r35": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r350": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(5))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r351": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r352": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r353": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r354": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r355": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r356": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(f)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r357": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r358": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r359": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(i)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r36": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r360": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r361": { "Name": "Accounting Standards Codification", "Paragraph": "1C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611" }, "r362": { "Name": "Accounting Standards Codification", "Paragraph": "1C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611" }, "r363": { "Name": "Accounting Standards Codification", "Paragraph": "1C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611" }, "r364": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611" }, "r365": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611" }, "r366": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611" }, "r367": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611" }, "r368": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611" }, "r369": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611" }, "r37": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(4))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r370": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611" }, "r371": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611" }, "r372": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611" }, "r373": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611" }, "r374": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611" }, "r375": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611" }, "r376": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611" }, "r377": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611" }, "r378": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611" }, "r379": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870" }, "r38": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r380": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870" }, "r381": { "Name": "Accounting Standards Codification", "Paragraph": "69B", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612" }, "r382": { "Name": "Accounting Standards Codification", "Paragraph": "69C", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612" }, "r383": { "Name": "Accounting Standards Codification", "Paragraph": "69E", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612" }, "r384": { "Name": "Accounting Standards Codification", "Paragraph": "69F", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612" }, "r385": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "470", "URI": "http://asc.fasb.org/topic&trid=2208564" }, "r386": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r387": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r388": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644" }, "r389": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644" }, "r39": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(31))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r390": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21506-112644" }, "r391": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21521-112644" }, "r392": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21538-112644" }, "r393": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3-04)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770" }, "r394": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045" }, "r395": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045" }, "r396": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045" }, "r397": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045" }, "r398": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045" }, "r399": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045" }, "r4": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "105", "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695" }, "r40": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(32))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r400": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(2)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045" }, "r401": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130558-203045" }, "r402": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045" }, "r403": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045" }, "r404": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130550-203045" }, "r405": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046" }, "r406": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046" }, "r407": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046" }, "r408": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046" }, "r409": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046" }, "r41": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(4)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r410": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046" }, "r411": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046" }, "r412": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)(2)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123338486&loc=SL49131195-203048" }, "r413": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123338486&loc=SL49131195-203048" }, "r414": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(i)(2)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123338486&loc=SL49131195-203048" }, "r415": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(j)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123338486&loc=SL49131195-203048" }, "r416": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "606", "URI": "http://asc.fasb.org/topic&trid=49130388" }, "r417": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "712", "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664" }, "r418": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "712", "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664" }, "r419": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123453770&loc=d3e1703-114919" }, "r42": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(6)(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r420": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123453770&loc=d3e1731-114919" }, "r421": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123453770&loc=SL108413299-114919" }, "r422": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123453770&loc=SL108413299-114919" }, "r423": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r424": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r425": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(10)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r426": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r427": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r428": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r429": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r43": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(6)(a)(5))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r430": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(6)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r431": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(7)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r432": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(8)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r433": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(9)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r434": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(b)(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r435": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r436": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r437": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r438": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r439": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r44": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(6)(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r440": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r441": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(6)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r442": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(7)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r443": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(8)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r444": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r445": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r446": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r447": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r448": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r449": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(01)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r45": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(7))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r450": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r451": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(A)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r452": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(B)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r453": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(C)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r454": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(03)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r455": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r456": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(f)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r457": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r458": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r459": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r46": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(8))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r460": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r461": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r462": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r463": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r464": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(6)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r465": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(7)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r466": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r467": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(j)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r468": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r469": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r47": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.1)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r470": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r471": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r472": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(l)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r473": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(n)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r474": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(o)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r475": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(p)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r476": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(q)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r477": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(r)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r478": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(r)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r479": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r48": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.12)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r480": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2410-114920" }, "r481": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920" }, "r482": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920" }, "r483": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920" }, "r484": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2439-114920" }, "r485": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r486": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r487": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r488": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r489": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.13(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r490": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r491": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(6)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r492": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(7)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r493": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920" }, "r494": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920" }, "r495": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921" }, "r496": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921" }, "r497": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=21916913&loc=d3e273930-122802" }, "r498": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=6412939&loc=d3e15145-114933" }, "r499": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "60", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=66047640&loc=d3e39622-114963" }, "r5": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "105", "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695" }, "r50": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.13(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r500": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "60", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39689-114964" }, "r501": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "60", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964" }, "r502": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "70", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942" }, "r503": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "35", "SubTopic": "80", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946" }, "r504": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947" }, "r505": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947" }, "r506": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947" }, "r507": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947" }, "r508": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=d3e29149-114947" }, "r509": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(d)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.13)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r510": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(f)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947" }, "r511": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947" }, "r512": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947" }, "r513": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947" }, "r514": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947" }, "r515": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "80", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948" }, "r516": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "715", "URI": "http://asc.fasb.org/topic&trid=2235017" }, "r517": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r518": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r519": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.14)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r520": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r521": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r522": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r523": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r524": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r525": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r526": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123452999&loc=d3e28511-109314" }, "r527": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123452999&loc=d3e28446-109314" }, "r528": { "Name": "Accounting Standards Codification", "Paragraph": "10B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318" }, "r529": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e32247-109318" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.17)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r530": { "Name": "Accounting Standards Codification", "Paragraph": "27", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e32262-109318" }, "r531": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e32280-109318" }, "r532": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e31917-109318" }, "r533": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e31931-109318" }, "r534": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32672-109319" }, "r535": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319" }, "r536": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319" }, "r537": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319" }, "r538": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319" }, "r539": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(3)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r540": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319" }, "r541": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319" }, "r542": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319" }, "r543": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319" }, "r544": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319" }, "r545": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319" }, "r546": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319" }, "r547": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319" }, "r548": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32840-109319" }, "r549": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r550": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319" }, "r551": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32847-109319" }, "r552": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319" }, "r553": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319" }, "r554": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319" }, "r555": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319" }, "r556": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319" }, "r557": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319" }, "r558": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319" }, "r559": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(b),22(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r560": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r561": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r562": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(3)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r563": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(1)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r564": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(2)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r565": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(3)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r566": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 6.I.5.Q1)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817" }, "r567": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 6.I.7)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817" }, "r568": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.7)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817" }, "r569": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.Fact.1)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817" }, "r57": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r570": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.Fact.2)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817" }, "r571": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.Fact.4)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817" }, "r572": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 11.C)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817" }, "r573": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123586238&loc=d3e38679-109324" }, "r574": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123586238&loc=d3e38679-109324" }, "r575": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "270", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338" }, "r576": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331" }, "r577": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "740", "URI": "http://asc.fasb.org/topic&trid=2144680" }, "r578": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "50", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=123385561&loc=d3e9135-128495" }, "r579": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "30", "SubTopic": "50", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=123362884&loc=d3e9212-128498" }, "r58": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19,20)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r580": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "30", "SubTopic": "50", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=123362884&loc=d3e9215-128498" }, "r581": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123454820&loc=SL4568447-111683" }, "r582": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123454820&loc=SL4568740-111683" }, "r583": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123454820&loc=SL4569616-111683" }, "r584": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123454820&loc=SL4569643-111683" }, "r585": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988" }, "r586": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988" }, "r587": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684" }, "r588": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r589": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c),(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r59": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.20)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r590": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685" }, "r591": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685" }, "r592": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685" }, "r593": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5728-111685" }, "r594": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=SL6759159-111685" }, "r595": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5747-111685" }, "r596": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=SL6228884-111685" }, "r597": { "Name": "Accounting Standards Codification", "Paragraph": "4I", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=120409616&loc=SL4590271-111686" }, "r598": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958" }, "r599": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5579240-113959" }, "r6": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760" }, "r60": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.21)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r600": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959" }, "r601": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959" }, "r602": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959" }, "r603": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)(ii)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41620-113959" }, "r604": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41620-113959" }, "r605": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "c", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41638-113959" }, "r606": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41638-113959" }, "r607": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959" }, "r608": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959" }, "r609": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959" }, "r61": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r610": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(c)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959" }, "r611": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959" }, "r612": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959" }, "r613": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959" }, "r614": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959" }, "r615": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959" }, "r616": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624177-113959" }, "r617": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624177-113959" }, "r618": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624177-113959" }, "r619": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624177-113959" }, "r62": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r620": { "Name": "Accounting Standards Codification", "Paragraph": "4E", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624181-113959" }, "r621": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5708775-113959" }, "r622": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41641-113959" }, "r623": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41675-113959" }, "r624": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41678-113959" }, "r625": { "Name": "Accounting Standards Codification", "Paragraph": "182", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123421605&loc=SL5629052-113961" }, "r626": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "15", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123589689&loc=d3e48542-113965" }, "r627": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "25", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986" }, "r628": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121558989&loc=d3e80720-113993" }, "r629": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994" }, "r63": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.24)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r630": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(f)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123477628&loc=d3e90205-114008" }, "r631": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(a)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r632": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(a)(2)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r633": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(a)(3)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r634": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(b)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r635": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(b)(2)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r636": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(c)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r637": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(d)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r638": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r639": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(2)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r64": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.25)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r640": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(3)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r641": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(4)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r642": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r643": { "Name": "Accounting Standards Codification", "Paragraph": "54B", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=122636397&loc=SL7495116-110257" }, "r644": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r645": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r646": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r647": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r648": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r649": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r65": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.26(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r650": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r651": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r652": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r653": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19279-110258" }, "r654": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19279-110258" }, "r655": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=SL6742756-110258" }, "r656": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=SL6742756-110258" }, "r657": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "60", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=7493716&loc=d3e21868-110260" }, "r658": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594809&loc=d3e13220-108610" }, "r659": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13279-108611" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29-31)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r660": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611" }, "r661": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611" }, "r662": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13476-108611" }, "r663": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611" }, "r664": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611" }, "r665": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611" }, "r666": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612" }, "r667": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL120254526-165497" }, "r668": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL120254526-165497" }, "r669": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.3(a)(2))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r670": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497" }, "r671": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497" }, "r672": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497" }, "r673": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(1)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497" }, "r674": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(2)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497" }, "r675": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(3)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497" }, "r676": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL122642865-165497" }, "r677": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL122642865-165497" }, "r678": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=123444420&loc=d3e33268-110906" }, "r679": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900" }, "r68": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.3,4)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r680": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r681": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r682": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r683": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r684": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r685": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901" }, "r686": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32618-110901" }, "r687": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391" }, "r688": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391" }, "r689": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=124435984&loc=d3e28541-108399" }, "r69": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.6(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r690": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399" }, "r691": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399" }, "r692": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=124435984&loc=d3e28567-108399" }, "r693": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629" }, "r694": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400" }, "r695": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977" }, "r696": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977" }, "r697": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(3)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980" }, "r698": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980" }, "r699": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r7": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760" }, "r70": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.6(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r700": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r701": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(2)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r702": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(4)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r703": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r704": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980" }, "r705": { "Name": "Accounting Standards Codification", "Paragraph": "53", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971" }, "r706": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "848", "URI": "http://asc.fasb.org/extlink&oid=122150657&loc=SL122150809-237846" }, "r707": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(1)", "Topic": "848", "URI": "http://asc.fasb.org/extlink&oid=122150657&loc=SL122150809-237846" }, "r708": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r709": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r71": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.8)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r710": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r711": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r712": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r713": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864" }, "r714": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864" }, "r715": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864" }, "r716": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "850", "URI": "http://asc.fasb.org/topic&trid=2122745" }, "r717": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124437977&loc=d3e55792-112764" }, "r718": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=d3e56071-112765" }, "r719": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765" }, "r72": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.9)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r720": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765" }, "r721": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766" }, "r722": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662" }, "r723": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314020-165662" }, "r724": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(i)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r725": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(ii)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r726": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r727": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r728": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r729": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312" }, "r730": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r731": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r732": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r733": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r734": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r735": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r736": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r737": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719" }, "r738": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728" }, "r739": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729" }, "r74": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312" }, "r740": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746" }, "r741": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746" }, "r742": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746" }, "r743": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(4)(i)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746" }, "r744": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r745": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r746": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r747": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(4)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r748": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(5)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r749": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(6)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312" }, "r750": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(7)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r751": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(b)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r752": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r753": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r754": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r755": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "910", "URI": "http://asc.fasb.org/extlink&oid=123353855&loc=SL119991595-234733" }, "r756": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "310", "Subparagraph": "(b)", "Topic": "912", "URI": "http://asc.fasb.org/extlink&oid=123371682&loc=d3e55415-109406" }, "r757": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "330", "Topic": "912", "URI": "http://asc.fasb.org/extlink&oid=6471895&loc=d3e55923-109411" }, "r758": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 11.L)", "Topic": "924", "URI": "http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856" }, "r759": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313" }, "r760": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r761": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r762": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(f)(1)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r763": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(f)(2)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r764": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(f)(3)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r765": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61929-109447" }, "r766": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61929-109447" }, "r767": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62059-109447" }, "r768": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62059-109447" }, "r769": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62395-109447" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226049-175313" }, "r770": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62395-109447" }, "r771": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62479-109447" }, "r772": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62479-109447" }, "r773": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=SL6807758-109447" }, "r774": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=SL6807758-109447" }, "r775": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(c)(1)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61872-109447" }, "r776": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(c)(2)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61872-109447" }, "r777": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "20", "Topic": "940", "URI": "http://asc.fasb.org/extlink&oid=123384075&loc=d3e41242-110953" }, "r778": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(11))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r779": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(13))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313" }, "r780": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(16))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r781": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r782": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(6))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r783": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.17)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r784": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.4)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r785": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(15))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r786": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(22))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r787": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r788": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(26))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r789": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.9)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313" }, "r790": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.9-05(b)(2))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884" }, "r791": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(a)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123599081&loc=SL120269850-112803" }, "r792": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123599081&loc=SL120269850-112803" }, "r793": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(c)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123599081&loc=SL120269850-112803" }, "r794": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(d)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123599081&loc=SL120269850-112803" }, "r795": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123599081&loc=SL120269850-112803" }, "r796": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=124429447&loc=SL124453093-239630" }, "r797": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "405", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817" }, "r798": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823" }, "r799": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(16))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r8": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "205", "URI": "http://asc.fasb.org/topic&trid=2122149" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226003-175313" }, "r800": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(1)(b))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r801": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(12))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r802": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(16)(a)(1))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r803": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(16))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r804": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(3))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r805": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r806": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(25))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r807": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r808": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.(a),19)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r809": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.1(f))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580" }, "r810": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(18))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r811": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(19))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r812": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(22))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r813": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r814": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(9))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r815": { "Name": "Accounting Standards Codification", "Paragraph": "4H", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438" }, "r816": { "Name": "Accounting Standards Codification", "Paragraph": "7A", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(d)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124506351&loc=SL117782755-158439" }, "r817": { "Name": "Accounting Standards Codification", "Paragraph": "13H", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117783719-158441" }, "r818": { "Name": "Accounting Standards Codification", "Paragraph": "13H", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Subparagraph": "(c)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117783719-158441" }, "r819": { "Name": "Accounting Standards Codification", "Paragraph": "29F", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117819544-158441" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i),(j),(k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580" }, "r820": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r821": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(b)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r822": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r823": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r824": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r825": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r826": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(i)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r827": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(ii)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r828": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(iii)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r829": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(iv)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i-k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580" }, "r830": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(h)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r831": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(h)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r832": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "505", "Topic": "944", "URI": "http://asc.fasb.org/subtopic&trid=4738323" }, "r833": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "825", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=123600520&loc=SL75241803-196195" }, "r834": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.6-04(12)(b)(3))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996" }, "r835": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.6-07.1(c))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401555&loc=SL114874292-224272" }, "r836": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r837": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r838": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r839": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580" }, "r840": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r841": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r842": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r843": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r844": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r845": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13D(Column B)(Footnote 2))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010" }, "r846": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13D(Column C)(Footnote 2))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010" }, "r847": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column A))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010" }, "r848": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column B))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010" }, "r849": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column C))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010" }, "r85": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580" }, "r850": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column D))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010" }, "r851": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=123364037&loc=d3e3115-115594" }, "r852": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "440", "Subparagraph": "(a)", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629" }, "r853": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Subparagraph": "(d)", "Topic": "958", "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916" }, "r854": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Topic": "958", "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916" }, "r855": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Topic": "958", "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916" }, "r856": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "360", "Subparagraph": "(SX 210.12-28(Footnote 4))", "Topic": "970", "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024" }, "r857": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Subparagraph": "(c)", "Topic": "976", "URI": "http://asc.fasb.org/extlink&oid=6497875&loc=d3e22274-108663" }, "r858": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Subparagraph": "(b)", "Topic": "978", "URI": "http://asc.fasb.org/extlink&oid=123360121&loc=d3e27327-108691" }, "r859": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "05", "SubTopic": "10", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=123345215&loc=d3e39995-110364" }, "r86": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e640-108580" }, "r860": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "05", "SubTopic": "10", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=123345215&loc=d3e40187-110364" }, "r861": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 10.D)", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=122136240&loc=d3e659339-123030" }, "r862": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 10.D)", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=122136240&loc=d3e659339-123030" }, "r863": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=84167750&loc=d3e42232-110370" }, "r864": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "340", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=123417213&loc=d3e43603-110378" }, "r865": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "340", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382" }, "r866": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "340", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382" }, "r867": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "55", "SubTopic": "340", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=123406419&loc=d3e44360-110383" }, "r868": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "360", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6500269&loc=d3e45485-110386" }, "r869": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "360", "Subparagraph": "(SAB TOPIC 10.C)", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=122136288&loc=d3e659983-123033" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e681-108580" }, "r870": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "360", "Subparagraph": "(SAB Topic 10.C)", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=122136288&loc=d3e659983-123033" }, "r871": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "405", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394" }, "r872": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "25", "SubTopic": "410", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6500910&loc=d3e48636-110399" }, "r873": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "410", "Subparagraph": "(SAB Topic 10.F)", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=122136391&loc=d3e660557-123036" }, "r874": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "40", "SubTopic": "470", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6500971&loc=d3e49673-110406" }, "r875": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "605", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=123376971&loc=d3e50159-110409" }, "r876": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "25", "SubTopic": "605", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=123376971&loc=d3e50174-110409" }, "r877": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "25", "SubTopic": "605", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=123376971&loc=d3e50180-110409" }, "r878": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "25", "SubTopic": "605", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=123376971&loc=d3e50187-110409" }, "r879": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "715", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580" }, "r880": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "740", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6501382&loc=d3e54053-110423" }, "r881": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "25", "SubTopic": "740", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6501382&loc=d3e54136-110423" }, "r882": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "835", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6501569&loc=d3e55921-110430" }, "r883": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "835", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6501662&loc=d3e56162-110433" }, "r884": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2" }, "r885": { "Name": "Form 10-K", "Number": "249", "Publisher": "SEC", "Section": "310" }, "r886": { "Name": "Form 20-F", "Number": "249", "Publisher": "SEC", "Section": "220", "Subsection": "f" }, "r887": { "Name": "Form 40-F", "Number": "249", "Publisher": "SEC", "Section": "240", "Subsection": "f" }, "r888": { "Name": "Forms 10-K, 10-Q, 20-F", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-1" }, "r889": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(a)", "Publisher": "SEC", "Section": "1402" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e689-108580" }, "r890": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(1)" }, "r891": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)" }, "r892": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(3)" }, "r893": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(i)" }, "r894": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(ii)" }, "r895": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(iii)" }, "r896": { "Name": "Regulation S-T", "Number": "232", "Publisher": "SEC", "Section": "405" }, "r897": { "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "11", "Subsection": "03" }, "r898": { "Footnote": "4", "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "12", "Subsection": "28" }, "r899": { "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "12", "Subsection": "09" }, "r9": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "17A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL34724391-108580" }, "r900": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(i)", "Subsection": "01" }, "r901": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(i)", "Subsection": "02" }, "r902": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(ii)", "Subsection": "01" }, "r903": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(iii)", "Subsection": "01" }, "r904": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(iii)(A)", "Subsection": "01" }, "r905": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(iii)(A)", "Subsection": "02" }, "r906": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(iii)(B)", "Subsection": "01" }, "r907": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(iii)(B)", "Subsection": "02" }, "r908": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(iii)(C)", "Subsection": "02" }, "r909": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(iv)", "Subsection": "01" }, "r91": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580" }, "r910": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(a)", "Publisher": "SEC", "Section": "13", "Subparagraph": "(4)(iv)", "Subsection": "02" }, "r911": { "Name": "Securities Act", "Number": "230", "Publisher": "SEC", "Section": "405" }, "r912": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "848" }, "r913": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "848" }, "r914": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "848" }, "r915": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)(3)(iii)(01)", "Topic": "848" }, "r916": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)(3)(iii)(03)", "Topic": "848" }, "r917": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "848" }, "r92": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669625-108580" }, "r95": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669625-108580" }, "r96": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e557-108580" }, "r97": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL116659661-227067" }, "r98": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124442407-227067" }, "r99": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067" } }, "version": "2.1" }