{ "instance": { "cccc-20230331.htm": { "axisCustom": 0, "axisStandard": 18, "baseTaxonomies": { "http://fasb.org/us-gaap/2022": 505, "http://xbrl.sec.gov/dei/2022": 30 }, "contextCount": 166, "dts": { "calculationLink": { "local": [ "cccc-20230331_cal.xml" ] }, "definitionLink": { "local": [ "cccc-20230331_def.xml" ] }, "inline": { "local": [ "cccc-20230331.htm" ] }, "labelLink": { "local": [ "cccc-20230331_lab.xml" ] }, "presentationLink": { "local": [ "cccc-20230331_pre.xml" ] }, "schema": { "local": [ "cccc-20230331.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/2022/elts/srt-2022.xsd", "https://xbrl.fasb.org/srt/2022/elts/srt-roles-2022.xsd", "https://xbrl.fasb.org/srt/2022/elts/srt-types-2022.xsd", "https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd", "https://xbrl.fasb.org/us-gaap/2022/elts/us-roles-2022.xsd", "https://xbrl.fasb.org/us-gaap/2022/elts/us-types-2022.xsd", "https://xbrl.sec.gov/country/2022/country-2022.xsd", "https://xbrl.sec.gov/dei/2022/dei-2022.xsd" ] } }, "elementCount": 391, "entityCount": 1, "hidden": { "http://fasb.org/us-gaap/2022": 2, "http://xbrl.sec.gov/dei/2022": 5, "total": 7 }, "keyCustom": 43, "keyStandard": 203, "memberCustom": 22, "memberStandard": 25, "nsprefix": "cccc", "nsuri": "http://c4therapeutics.com/20230331", "report": { "R1": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "true", "longName": "0000001 - Document - Cover", "menuCat": "Cover", "order": "1", "role": "http://c4therapeutics.com/role/Cover", "shortName": "Cover", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R10": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000010 - Disclosure - Marketable securities", "menuCat": "Notes", "order": "10", "role": "http://c4therapeutics.com/role/Marketablesecurities", "shortName": "Marketable securities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000011 - Disclosure - Property and equipment", "menuCat": "Notes", "order": "11", "role": "http://c4therapeutics.com/role/Propertyandequipment", "shortName": "Property and equipment", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeasesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000012 - Disclosure - Leases", "menuCat": "Notes", "order": "12", "role": "http://c4therapeutics.com/role/Leases", "shortName": "Leases", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeasesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000013 - Disclosure - Accrued expenses and other current liabilities", "menuCat": "Notes", "order": "13", "role": "http://c4therapeutics.com/role/Accruedexpensesandothercurrentliabilities", "shortName": "Accrued expenses and other current liabilities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CollaborativeArrangementDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000014 - Disclosure - Collaboration and license agreements", "menuCat": "Notes", "order": "14", "role": "http://c4therapeutics.com/role/Collaborationandlicenseagreements", "shortName": "Collaboration and license agreements", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CollaborativeArrangementDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DebtDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000015 - Disclosure - Long-term debt \u2013 related party", "menuCat": "Notes", "order": "15", "role": "http://c4therapeutics.com/role/Longtermdebtrelatedparty", "shortName": "Long-term debt \u2013 related party", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DebtDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R16": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000016 - Disclosure - Stock-based compensation", "menuCat": "Notes", "order": "16", "role": "http://c4therapeutics.com/role/Stockbasedcompensation", "shortName": "Stock-based compensation", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000017 - Disclosure - Commitment and contingencies", "menuCat": "Notes", "order": "17", "role": "http://c4therapeutics.com/role/Commitmentandcontingencies", "shortName": "Commitment and contingencies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R18": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000018 - Disclosure - Loss per share", "menuCat": "Notes", "order": "18", "role": "http://c4therapeutics.com/role/Losspershare", "shortName": "Loss per share", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000019 - Disclosure - Summary of significant accounting policies (Policies)", "menuCat": "Policies", "order": "19", "role": "http://c4therapeutics.com/role/SummaryofsignificantaccountingpoliciesPolicies", "shortName": "Summary of significant accounting policies (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "0000002 - Statement - Condensed Consolidated Balance Sheets", "menuCat": "Statements", "order": "2", "role": "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets", "shortName": "Condensed Consolidated Balance Sheets", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:AccountsReceivableNetCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R20": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000020 - Disclosure - Fair value measurements (Tables)", "menuCat": "Tables", "order": "20", "role": "http://c4therapeutics.com/role/FairvaluemeasurementsTables", "shortName": "Fair value measurements (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R21": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:MarketableSecuritiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000021 - Disclosure - Marketable securities (Tables)", "menuCat": "Tables", "order": "21", "role": "http://c4therapeutics.com/role/MarketablesecuritiesTables", "shortName": "Marketable securities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:MarketableSecuritiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R22": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000022 - Disclosure - Property and equipment (Tables)", "menuCat": "Tables", "order": "22", "role": "http://c4therapeutics.com/role/PropertyandequipmentTables", "shortName": "Property and equipment (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000023 - Disclosure - Accrued expenses and other current liabilities (Tables)", "menuCat": "Tables", "order": "23", "role": "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesTables", "shortName": "Accrued expenses and other current liabilities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R24": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "cccc:SummaryOfAllocationOfTotalTransactionPriceAndUnsatisfiedTransactionPriceTableTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000024 - Disclosure - Collaboration and license agreements (Tables)", "menuCat": "Tables", "order": "24", "role": "http://c4therapeutics.com/role/CollaborationandlicenseagreementsTables", "shortName": "Collaboration and license agreements (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "cccc:SummaryOfAllocationOfTotalTransactionPriceAndUnsatisfiedTransactionPriceTableTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDebtInstrumentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000025 - Disclosure - Long-term debt \u2013 related party (Tables)", "menuCat": "Tables", "order": "25", "role": "http://c4therapeutics.com/role/LongtermdebtrelatedpartyTables", "shortName": "Long-term debt \u2013 related party (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDebtInstrumentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000026 - Disclosure - Stock-based compensation (Tables)", "menuCat": "Tables", "order": "26", "role": "http://c4therapeutics.com/role/StockbasedcompensationTables", "shortName": "Stock-based compensation (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R27": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000027 - Disclosure - Loss per share (Tables)", "menuCat": "Tables", "order": "27", "role": "http://c4therapeutics.com/role/LosspershareTables", "shortName": "Loss per share (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:ProfitLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000028 - Disclosure - Nature of the business and basis of presentation (Details)", "menuCat": "Details", "order": "28", "role": "http://c4therapeutics.com/role/NatureofthebusinessandbasisofpresentationDetails", "shortName": "Nature of the business and basis of presentation (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-5", "lang": "en-US", "name": "us-gaap:CashCashEquivalentsAndShortTermInvestments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:MarketableSecuritiesTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleExcludingAccruedInterest", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000029 - Disclosure - Fair value measurements (Details)", "menuCat": "Details", "order": "29", "role": "http://c4therapeutics.com/role/FairvaluemeasurementsDetails", "shortName": "Fair value measurements (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i5c362f97658a483e94ec23e61afa0176_I20230331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R3": { "firstAnchor": { "ancestors": [ "us-gaap:PreferredStockParOrStatedValuePerShare", "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:PreferredStockParOrStatedValuePerShare", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "0000003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)", "menuCat": "Statements", "order": "3", "role": "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical", "shortName": "Condensed Consolidated Balance Sheets (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "us-gaap:PreferredStockParOrStatedValuePerShare", "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:PreferredStockParOrStatedValuePerShare", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" } }, "R30": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000030 - Disclosure - Marketable securities - Summary of marketable securities (Details)", "menuCat": "Details", "order": "30", "role": "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails", "shortName": "Marketable securities - Summary of marketable securities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:MarketableSecuritiesTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions", "reportCount": 1, "unique": true, "unitRef": "security", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000031 - Disclosure - Marketable securities - Summary of marketable securities in unrealized loss position (Details)", "menuCat": "Details", "order": "31", "role": "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails", "shortName": "Marketable securities - Summary of marketable securities in unrealized loss position (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions", "reportCount": 1, "unique": true, "unitRef": "security", "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest", "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000032 - Disclosure - Marketable securities - Narrative (Details)", "menuCat": "Details", "order": "32", "role": "http://c4therapeutics.com/role/MarketablesecuritiesNarrativeDetails", "shortName": "Marketable securities - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest", "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:PropertyPlantAndEquipmentTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000033 - Disclosure - Property and equipment (Details)", "menuCat": "Details", "order": "33", "role": "http://c4therapeutics.com/role/PropertyandequipmentDetails", "shortName": "Property and equipment (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:PropertyPlantAndEquipmentTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "cccc:AccruedResearchAndDevelopmentCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000034 - Disclosure - Accrued expenses and other current liabilities (Details)", "menuCat": "Details", "order": "34", "role": "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails", "shortName": "Accrued expenses and other current liabilities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "cccc:AccruedResearchAndDevelopmentCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "cccc:SupplementalFinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:ContractWithCustomerLiabilityRevenueRecognized", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000035 - Disclosure - Collaboration and license agreements - Narrative (Details)", "menuCat": "Details", "order": "35", "role": "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "shortName": "Collaboration and license agreements - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i384bf120148241e6b600751efbded4f5_D20181201-20181231", "decimals": "-5", "lang": "en-US", "name": "cccc:AdditionalUpfrontConsideration", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "cccc:SummaryOfAllocationOfTotalTransactionPriceAndUnsatisfiedTransactionPriceTableTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "cccc:TransactionPriceAllocatedToPerformanceObligation", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000036 - Disclosure - Collaboration and license agreements - Summary of allocation of transaction price (Details)", "menuCat": "Details", "order": "36", "role": "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails", "shortName": "Collaboration and license agreements - Summary of allocation of transaction price (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "cccc:SummaryOfAllocationOfTotalTransactionPriceAndUnsatisfiedTransactionPriceTableTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "lang": "en-US", "name": "cccc:TransactionPriceUnsatisfiedToPerformanceObligation", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000037 - Disclosure - Collaboration and license agreements - Schedule of revenue from collaboration agreements (Details)", "menuCat": "Details", "order": "37", "role": "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails", "shortName": "Collaboration and license agreements - Schedule of revenue from collaboration agreements (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "cccc:RevenueFromCollaborationAgreementsTableTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "ibc5cd366f65b49febe2fa8e1f5fa5354_D20230101-20230331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R38": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "cccc:FinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:ReceivablesNetCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000038 - Disclosure - Collaboration and license agreements - Schedule of financial information related to collaboration and license agreements (Details)", "menuCat": "Details", "order": "38", "role": "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "shortName": "Collaboration and license agreements - Schedule of financial information related to collaboration and license agreements (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "cccc:FinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:ReceivablesNetCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R39": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "cccc:SupplementalFinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:ContractWithCustomerLiabilityRevenueRecognized", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000039 - Disclosure - Collaboration and license agreements - Schedule of supplemental financial information related to collaboration and license agreements (Details)", "menuCat": "Details", "order": "39", "role": "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofsupplementalfinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "shortName": "Collaboration and license agreements - Schedule of supplemental financial information related to collaboration and license agreements (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "cccc:SupplementalFinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "0000004 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Loss", "menuCat": "Statements", "order": "4", "role": "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "shortName": "Condensed Consolidated Statements of Operations and Comprehensive Loss", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:ResearchAndDevelopmentExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R40": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfDebtInstrumentsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:DebtInstrumentCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000040 - Disclosure - Long-term debt \u2013 related party - Schedule of long-term debt (Details)", "menuCat": "Details", "order": "40", "role": "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails", "shortName": "Long-term debt \u2013 related party - Schedule of long-term debt (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfDebtInstrumentsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:DebtInstrumentCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R41": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i892f0db62f724a178ea580293d80c79c_I20200605", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000041 - Disclosure - Long-term debt \u2013 related party - Narrative (Details)", "menuCat": "Details", "order": "41", "role": "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails", "shortName": "Long-term debt \u2013 related party - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i892f0db62f724a178ea580293d80c79c_I20200605", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R42": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000042 - Disclosure - Long-term debt \u2013 related party - Summary of future minimum payments (Details)", "menuCat": "Details", "order": "42", "role": "http://c4therapeutics.com/role/LongtermdebtrelatedpartySummaryoffutureminimumpaymentsDetails", "shortName": "Long-term debt \u2013 related party - Summary of future minimum payments (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "if857d022e2aa4996a806118f21dca69d_I20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:AllocatedShareBasedCompensationExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000043 - Disclosure - Stock-based compensation - Schedule of stock-based compensation expense (Details)", "menuCat": "Details", "order": "43", "role": "http://c4therapeutics.com/role/StockbasedcompensationScheduleofstockbasedcompensationexpenseDetails", "shortName": "Stock-based compensation - Schedule of stock-based compensation expense (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:AllocatedShareBasedCompensationExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R44": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000044 - Disclosure - Stock-based compensation - Narrative (Details)", "menuCat": "Details", "order": "44", "role": "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails", "shortName": "Stock-based compensation - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R45": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "ic3855addc1954f61b5a534b67483cbc8_I20221231", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000045 - Disclosure - Stock-based compensation - Summary of RSU activity (Details)", "menuCat": "Details", "order": "45", "role": "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails", "shortName": "Stock-based compensation - Summary of RSU activity (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "ic3855addc1954f61b5a534b67483cbc8_I20221231", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R46": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "0", "first": true, "lang": "en-US", "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000046 - Disclosure - Loss per share - Schedule of diluted net loss per share attributable to common stockholders (Details)", "menuCat": "Details", "order": "46", "role": "http://c4therapeutics.com/role/LosspershareScheduleofdilutednetlosspershareattributabletocommonstockholdersDetails", "shortName": "Loss per share - Schedule of diluted net loss per share attributable to common stockholders (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "0", "first": true, "lang": "en-US", "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R47": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000047 - Disclosure - Loss per share - Schedule of basic and diluted loss per share (Details)", "menuCat": "Details", "order": "47", "role": "http://c4therapeutics.com/role/LosspershareScheduleofbasicanddilutedlosspershareDetails", "shortName": "Loss per share - Schedule of basic and diluted loss per share (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R5": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i5ad50ec8dba84383b8822092d381f198_I20211231", "decimals": "0", "first": true, "lang": "en-US", "name": "us-gaap:SharesOutstanding", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "0000005 - Statement - Condensed Consolidated Statements of Stockholders\u2019 Equity", "menuCat": "Statements", "order": "5", "role": "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity", "shortName": "Condensed Consolidated Statements of Stockholders\u2019 Equity", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i5ad50ec8dba84383b8822092d381f198_I20211231", "decimals": "0", "first": true, "lang": "en-US", "name": "us-gaap:SharesOutstanding", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R6": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:ProfitLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "0000006 - Statement - Condensed Consolidated Statements of Cash Flows", "menuCat": "Statements", "order": "6", "role": "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows", "shortName": "Condensed Consolidated Statements of Cash Flows", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:ShareBasedCompensation", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R7": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000007 - Disclosure - Nature of the business and basis of presentation", "menuCat": "Notes", "order": "7", "role": "http://c4therapeutics.com/role/Natureofthebusinessandbasisofpresentation", "shortName": "Nature of the business and basis of presentation", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000008 - Disclosure - Summary of significant accounting policies", "menuCat": "Notes", "order": "8", "role": "http://c4therapeutics.com/role/Summaryofsignificantaccountingpolicies", "shortName": "Summary of significant accounting policies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0000009 - Disclosure - Fair value measurements", "menuCat": "Notes", "order": "9", "role": "http://c4therapeutics.com/role/Fairvaluemeasurements", "shortName": "Fair value measurements", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "cccc-20230331.htm", "contextRef": "i61d9c23e62a4409684ed9baa601626ac_D20230101-20230331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } } }, "segmentCount": 51, "tag": { "cccc_AccruedResearchAndDevelopmentCurrent": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails": { "order": 1.0, "parentTag": "us-gaap_AccruedLiabilitiesAndOtherLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Accrued research and development, current.", "label": "Accrued Research And Development Current", "terseLabel": "Accrued research and development" } } }, "localname": "AccruedResearchAndDevelopmentCurrent", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "cccc_AdditionalTransactionPriceAllocatedToPerformanceObligation": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Additional transaction price allocated to performance obligation.", "label": "Additional Transaction Price Allocated To Performance Obligation", "terseLabel": "Additional transaction price allocated to performance obligation" } } }, "localname": "AdditionalTransactionPriceAllocatedToPerformanceObligation", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_AdditionalUpfrontConsideration": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Additional upfront consideration.", "label": "Additional Upfront Consideration", "terseLabel": "Additional upfront consideration received" } } }, "localname": "AdditionalUpfrontConsideration", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_AdjustmentsToAdditionalPaidInCapitalOtherShares": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Adjustments to additional paid in capital other shares.", "label": "Adjustments To Additional Paid In Capital Other Shares", "terseLabel": "Other (in shares)" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalOtherShares", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "sharesItemType" }, "cccc_AmountPayableForExtendResearchTermOption": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount payable for extend research term option.", "label": "Amount Payable For Extend Research Term Option", "terseLabel": "Amount payable for extend research term option" } } }, "localname": "AmountPayableForExtendResearchTermOption", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_AnnualPayments": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Annual payments.", "label": "Annual Payments", "terseLabel": "Annual payments" } } }, "localname": "AnnualPayments", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_AnnualResearchPlanPaymentsPeriods": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Annual research plan payments periods.", "label": "Annual Research Plan Payments Periods", "terseLabel": "Annual research plan payments periods" } } }, "localname": "AnnualResearchPlanPaymentsPeriods", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "cccc_AnnualResearchPlanPaymentsReceivables": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Annual research plan payments receivables.", "label": "Annual Research Plan Payments Receivables", "terseLabel": "Annual research plan payments receivables" } } }, "localname": "AnnualResearchPlanPaymentsReceivables", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_BiogenAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Biogen agreement.", "label": "Biogen Agreement [Member]", "terseLabel": "Biogen Agreement" } } }, "localname": "BiogenAgreementMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails" ], "xbrltype": "domainItemType" }, "cccc_BiogenResearchAndLicenseAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Biogen license agreement", "label": "Biogen Research and License Agreement [Member]", "terseLabel": "Biogen License Agreement" } } }, "localname": "BiogenResearchAndLicenseAgreementMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_CalicoAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Calico agreement.", "label": "Calico Agreement [Member]", "terseLabel": "Calico Agreement" } } }, "localname": "CalicoAgreementMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails" ], "xbrltype": "domainItemType" }, "cccc_CalicoLicenseAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Calico license agreement.", "label": "Calico License Agreement [Member]", "terseLabel": "Calico License Agreement" } } }, "localname": "CalicoLicenseAgreementMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_CashBalanceToBeMaintainedInBankAccountWhileDebtIsOutstanding": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash balance to be maintained in bank account while debt is outstanding.", "label": "Cash Balance To Be Maintained In Bank Account While Debt Is Outstanding", "terseLabel": "Balance to be maintained in bank account while debt is outstanding, minimum" } } }, "localname": "CashBalanceToBeMaintainedInBankAccountWhileDebtIsOutstanding", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_CollaborativeArrangementOptionExerciseFeesThroughPhase1Trials": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Option Exercise Fees, Through Phase 1 Trials", "label": "Collaborative Arrangement, Option Exercise Fees, Through Phase 1 Trials", "terseLabel": "Option exercise fees, through Phase 1 trials" } } }, "localname": "CollaborativeArrangementOptionExerciseFeesThroughPhase1Trials", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_ContractualTerm": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contractual term.", "label": "Contractual Term", "terseLabel": "Contractual term" } } }, "localname": "ContractualTerm", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "cccc_CreditAgreementWithPerceptiveLifeSciencesMasterFundLTDMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Credit agreement with Perceptive Life Sciences Master Fund LTD.", "label": "Credit Agreement With Perceptive Life Sciences Master Fund L T D [Member]", "terseLabel": "Credit Agreement with Perceptive Life Sciences Master Fund LTD" } } }, "localname": "CreditAgreementWithPerceptiveLifeSciencesMasterFundLTDMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_DebtInstrumentFloorInterestRate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Debt Instrument, Floor Interest Rate", "label": "Debt Instrument, Floor Interest Rate", "terseLabel": "Floor interest rate" } } }, "localname": "DebtInstrumentFloorInterestRate", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "percentItemType" }, "cccc_DebtInstrumentPercentageOfPrincipalPaymentUntilMaturity": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Debt instrument. percentage of principal payment until maturity.", "label": "Debt Instrument Percentage Of Principal Payment Until Maturity", "terseLabel": "Percentage of principal payments until maturity" } } }, "localname": "DebtInstrumentPercentageOfPrincipalPaymentUntilMaturity", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "percentItemType" }, "cccc_DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTaxCurrent": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": 1.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossCurrent", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax, Current", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax, Current", "terseLabel": "Gross Unrealized Gains" } } }, "localname": "DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTaxCurrent", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "cccc_DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTaxNoncurrent": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax, Noncurrent", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax, Noncurrent", "terseLabel": "Gross Unrealized Gains" } } }, "localname": "DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTaxNoncurrent", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "cccc_DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedLossBeforeTaxCurrent": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax, Current", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax, Current", "negatedTerseLabel": "Gross Unrealized Losses" } } }, "localname": "DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedLossBeforeTaxCurrent", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "cccc_DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedLossBeforeTaxNoncurrent": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": 3.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax, Noncurrent", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax, Noncurrent", "negatedTerseLabel": "Gross Unrealized Losses" } } }, "localname": "DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedLossBeforeTaxNoncurrent", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "cccc_DebtSecuritiesAvailableForSaleCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Debt Securities, Available-for-sale, Current", "label": "Debt Securities, Available-for-sale, Current [Abstract]", "terseLabel": "Marketable securities, current:" } } }, "localname": "DebtSecuritiesAvailableForSaleCurrentAbstract", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "stringItemType" }, "cccc_DebtSecuritiesAvailableForSaleNoncurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Debt Securities, Available-for-sale, Noncurrent", "label": "Debt Securities, Available-for-sale, Noncurrent [Abstract]", "terseLabel": "Marketable securities, non-current:" } } }, "localname": "DebtSecuritiesAvailableForSaleNoncurrentAbstract", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "stringItemType" }, "cccc_FinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Financial information related to the collaboration and license agreements.", "label": "Financial Information Related To Collaboration And License Agreements Table [Table Text Block]", "terseLabel": "Schedule of financial information related to collaboration and license agreements" } } }, "localname": "FinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsTables" ], "xbrltype": "textBlockItemType" }, "cccc_GoodLaboratoryPracticeGlpToxicologyToxStudyPhaseMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Good laboratory practice (\u201cGLP\u201d) toxicology (\u201cTox\u201d) study phase.", "label": "Good Laboratory Practice Glp Toxicology Tox Study Phase [Member]", "terseLabel": "Good Laboratory Practice (\u201cGLP\u201d) Toxicology (\u201cTox\u201d) Study Phase" } } }, "localname": "GoodLaboratoryPracticeGlpToxicologyToxStudyPhaseMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_InitialContractualTermOnStraightLineBasis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Initial contractual term on straight line basis.", "label": "Initial Contractual Term On Straight Line Basis", "terseLabel": "Initial contractual term on straight line basis" } } }, "localname": "InitialContractualTermOnStraightLineBasis", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "cccc_InterestExpenseAndAmortizationOfLongTermDebtRelatedParty": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_NonoperatingIncomeExpense", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Interest expense and amortization of long term debt related party.", "label": "Interest Expense And Amortization Of Long Term Debt Related Party", "negatedLabel": "Interest expense and amortization of long-term debt \u2212 related party" } } }, "localname": "InterestExpenseAndAmortizationOfLongTermDebtRelatedParty", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "cccc_LaboratoryEquipmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Laboratory equipment.", "label": "Laboratory Equipment [Member]", "terseLabel": "Laboratory equipment" } } }, "localname": "LaboratoryEquipmentMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "domainItemType" }, "cccc_LeadSeriesIdentificationAchievementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Lead series identification achievement.", "label": "Lead Series Identification Achievement [Member]", "terseLabel": "Lead Series Identification Achievement" } } }, "localname": "LeadSeriesIdentificationAchievementMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_LongTermDebtAndWarrantLiabilityLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long-term debt and warrant liability line items.", "label": "Long Term Debt And Warrant Liability [Line Items]", "terseLabel": "Long Term Debt And Warrant Liability [Line Items]" } } }, "localname": "LongTermDebtAndWarrantLiabilityLineItems", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "stringItemType" }, "cccc_LongTermDebtAndWarrantLiabilityTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long-term debt and warrant liability table.", "label": "Long Term Debt And Warrant Liability [Table]", "terseLabel": "Long Term Debt And Warrant Liability [Table]" } } }, "localname": "LongTermDebtAndWarrantLiabilityTable", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "stringItemType" }, "cccc_LongTermDebtGrossCurrentMaturities": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails": { "order": 2.0, "parentTag": "us-gaap_DebtInstrumentCarryingAmount", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Long-Term Debt, Gross, Current Maturities", "label": "Long-Term Debt, Gross, Current Maturities", "terseLabel": "Less: Long-term debt \u2014 related party, current" } } }, "localname": "LongTermDebtGrossCurrentMaturities", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails" ], "xbrltype": "monetaryItemType" }, "cccc_LongTermDebtGrossExcludingCurrentMaturities": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails": { "order": 1.0, "parentTag": "us-gaap_LongTermDebtNoncurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Long-Term Debt, Gross, Excluding Current Maturities", "label": "Long-Term Debt, Gross, Excluding Current Maturities", "terseLabel": "Long-term debt \u2014 related party, net of current" } } }, "localname": "LongTermDebtGrossExcludingCurrentMaturities", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails" ], "xbrltype": "monetaryItemType" }, "cccc_NonRefundableUpfrontPayment": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Non refundable upfront payment.", "label": "Non Refundable Upfront Payment", "terseLabel": "Nonrefundable upfront payment" } } }, "localname": "NonRefundableUpfrontPayment", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_NoticePeriodForTerminationOfAgreement": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Notice period for termination of agreement.", "label": "Notice Period For Termination Of Agreement", "terseLabel": "Written notice period for termination of agreement" } } }, "localname": "NoticePeriodForTerminationOfAgreement", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "cccc_NumberOfAdditionalTargets": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of additional targets.", "label": "Number Of Additional Targets", "terseLabel": "Number of additional targets" } } }, "localname": "NumberOfAdditionalTargets", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "cccc_NumberOfPerformanceObligation": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of performance obligation.", "label": "Number Of Performance Obligation", "terseLabel": "Number of performance obligation" } } }, "localname": "NumberOfPerformanceObligation", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "cccc_NumberOfPotentialTargets": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of potential targets.", "label": "Number Of Potential Targets", "terseLabel": "Number of potential targets" } } }, "localname": "NumberOfPotentialTargets", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "cccc_NumberOfTargetProteins": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of target proteins.", "label": "Number Of Target Proteins", "terseLabel": "Number of target proteins" } } }, "localname": "NumberOfTargetProteins", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "cccc_NumberOfTargetedProteinDegradation": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of targeted protein degradation.", "label": "Number Of Targeted Protein Degradation", "terseLabel": "Number of targeted protein degradation" } } }, "localname": "NumberOfTargetedProteinDegradation", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "cccc_NumberOfTargets": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of targets.", "label": "Number Of Targets", "terseLabel": "Number of targets" } } }, "localname": "NumberOfTargets", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "cccc_OneTimeSalesBasedPaymentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "One-time sales-based payments.", "label": "One Time Sales Based Payments [Member]", "terseLabel": "One-time sales-based payments" } } }, "localname": "OneTimeSalesBasedPaymentsMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_OptionExerciseFee": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Option exercise fee.", "label": "Option Exercise Fee", "terseLabel": "Option exercise fees" } } }, "localname": "OptionExerciseFee", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_OptionRightsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Option rights.", "label": "Option Rights [Member]", "terseLabel": "Option rights" } } }, "localname": "OptionRightsMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails" ], "xbrltype": "domainItemType" }, "cccc_OptionsToPurchaseCommonStockMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Options to purchase common stock.", "label": "Options To Purchase Common Stock [Member]", "terseLabel": "Options to purchase common stock" } } }, "localname": "OptionsToPurchaseCommonStockMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LosspershareScheduleofdilutednetlosspershareattributabletocommonstockholdersDetails" ], "xbrltype": "domainItemType" }, "cccc_PotentialResearchDevelopmentAndCommercialMilestonePaymentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Potential research, development and commercial milestone payments.", "label": "Potential Research Development And Commercial Milestone Payments [Member]", "terseLabel": "Potential research, development and commercial milestone payments" } } }, "localname": "PotentialResearchDevelopmentAndCommercialMilestonePaymentsMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_ResearchAndDevelopmentAgreementPeriod": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Research and development agreement period.", "label": "Research And Development Agreement Period", "terseLabel": "Research agreement, period" } } }, "localname": "ResearchAndDevelopmentAgreementPeriod", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "cccc_ResearchAndDevelopmentMilestonesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Research and development milestones.", "label": "Research And Development Milestones [Member]", "terseLabel": "Research and development milestones" } } }, "localname": "ResearchAndDevelopmentMilestonesMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_ResearchAndDevelopmentServicesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Research and development services.", "label": "Research And Development Services [Member]", "terseLabel": "Research and development services" } } }, "localname": "ResearchAndDevelopmentServicesMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_ResearchAndDevelopmentTargetsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Research and development targets.", "label": "Research And Development Targets [Member]", "terseLabel": "Research and development targets" } } }, "localname": "ResearchAndDevelopmentTargetsMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails" ], "xbrltype": "domainItemType" }, "cccc_ResearchDevelopmentAndCommercialMilestonePaymentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Research, development and commercial milestone payments.", "label": "Research Development And Commercial Milestone Payments [Member]", "terseLabel": "Research, development and commercial milestones" } } }, "localname": "ResearchDevelopmentAndCommercialMilestonePaymentsMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_ResearchExtendedTerm": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Research extended term.", "label": "Research Extended Term", "terseLabel": "Research extend term" } } }, "localname": "ResearchExtendedTerm", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "cccc_ResearchTerm": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Research term.", "label": "Research Term", "terseLabel": "Research term" } } }, "localname": "ResearchTerm", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "cccc_RestatedRocheAgreementAndBiogenLicenseAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Restated Roche Agreement And Biogen License Agreement", "label": "Restated Roche Agreement And Biogen License Agreement [Member]", "terseLabel": "Restated Roche Agreement And Biogen License Agreement" } } }, "localname": "RestatedRocheAgreementAndBiogenLicenseAgreementMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_RestatedRocheAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Restated Roche agreement.", "label": "Restated Roche Agreement [Member]", "terseLabel": "Restated Roche Agreement" } } }, "localname": "RestatedRocheAgreementMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_RevenueFromCollaborationAgreementsTableTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Revenue from collaboration agreements.", "label": "Revenue From Collaboration Agreements Table [Table Text Block]", "terseLabel": "Schedule of revenue from collaboration agreements" } } }, "localname": "RevenueFromCollaborationAgreementsTableTableTextBlock", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsTables" ], "xbrltype": "textBlockItemType" }, "cccc_RocheAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Roche agreement.", "label": "Roche Agreement [Member]", "terseLabel": "Roche Agreement" } } }, "localname": "RocheAgreementMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails" ], "xbrltype": "domainItemType" }, "cccc_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfCommonStockIssuablePerRSUVested": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share-based compensation arrangement by share-based payment award, number of common stock issuable per RSU vested.", "label": "Share Based Compensation Arrangement By Share Based Payment Award Number Of Common Stock Issuable Per R S U Vested", "terseLabel": "Share-based compensation, number of common stock issuable per RSU vested (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfCommonStockIssuablePerRSUVested", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "cccc_SummaryOfAllocationOfTotalTransactionPriceAndUnsatisfiedTransactionPriceTableTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Summary of allocation of total transaction price and unsatisfied transaction price.", "label": "Summary Of Allocation Of Total Transaction Price And Unsatisfied Transaction Price Table [Table Text Block]", "terseLabel": "Summary of allocation of transaction price" } } }, "localname": "SummaryOfAllocationOfTotalTransactionPriceAndUnsatisfiedTransactionPriceTableTableTextBlock", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsTables" ], "xbrltype": "textBlockItemType" }, "cccc_SupplementalFinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Supplemental financial information related to collaboration and license agreements.", "label": "Supplemental Financial Information Related To Collaboration And License Agreements Table [Table Text Block]", "terseLabel": "Schedule of supplemental financial information related to collaboration and license agreements" } } }, "localname": "SupplementalFinancialInformationRelatedToCollaborationAndLicenseAgreementsTableTableTextBlock", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsTables" ], "xbrltype": "textBlockItemType" }, "cccc_TermLoanMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Term loan.", "label": "Term Loan [Member]", "terseLabel": "Term Loan" } } }, "localname": "TermLoanMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_TrancheOneMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tranche one.", "label": "Tranche One [Member]", "terseLabel": "Tranche one" } } }, "localname": "TrancheOneMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_TrancheTwoMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tranche two.", "label": "Tranche Two [Member]", "terseLabel": "Tranche two" } } }, "localname": "TrancheTwoMember", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "cccc_TransactionPriceAllocatedToPerformanceObligation": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Transaction price allocated to performance obligation.", "label": "Transaction Price Allocated To Performance Obligation", "terseLabel": "Transaction price allocated to performance obligation", "verboseLabel": "Transaction Price Allocated" } } }, "localname": "TransactionPriceAllocatedToPerformanceObligation", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails" ], "xbrltype": "monetaryItemType" }, "cccc_TransactionPriceUnsatisfiedToPerformanceObligation": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Transaction price unsatisfied to performance obligation.", "label": "Transaction Price Unsatisfied To Performance Obligation", "verboseLabel": "Transaction Price Unsatisfied" } } }, "localname": "TransactionPriceUnsatisfiedToPerformanceObligation", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails" ], "xbrltype": "monetaryItemType" }, "cccc_UnauditedInterimFinancialInformationPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Unaudited interim financial information.", "label": "Unaudited Interim Financial Information Policy [Policy Text Block]", "terseLabel": "Unaudited interim financial information" } } }, "localname": "UnauditedInterimFinancialInformationPolicyPolicyTextBlock", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/SummaryofsignificantaccountingpoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "cccc_UpfrontFees": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Upfront fees.", "label": "Upfront Fees", "terseLabel": "Upfront fees" } } }, "localname": "UpfrontFees", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "cccc_UpfrontPayment": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Upfront payment.", "label": "Upfront Payment", "terseLabel": "Upfront payment" } } }, "localname": "UpfrontPayment", "nsuri": "http://c4therapeutics.com/20230331", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "booleanItemType" }, "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "gMonthDayItemType" }, "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", "verboseLabel": "Document Fiscal Period Focus" } } }, "localname": "DocumentFiscalPeriodFocus", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "dateItemType" }, "dei_DocumentQuarterlyReport": { "auth_ref": [ "r463" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true only for a form used as an quarterly report.", "label": "Document Quarterly Report", "terseLabel": "Document Quarterly Report" } } }, "localname": "DocumentQuarterlyReport", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_DocumentTransitionReport": { "auth_ref": [ "r464" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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", "verboseLabel": "Document Type" } } }, "localname": "DocumentType", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressAddressLine2": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Address Line 2 such as Street or Suite number", "label": "Entity Address, Address Line Two", "terseLabel": "Entity Address, Address Line Two" } } }, "localname": "EntityAddressAddressLine2", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "stateOrProvinceItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r461" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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", "verboseLabel": "Entity Common Stock, Shares Outstanding" } } }, "localname": "EntityCommonStockSharesOutstanding", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "yesNoItemType" }, "dei_EntityEmergingGrowthCompany": { "auth_ref": [ "r461" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "fileNumberItemType" }, "dei_EntityFilerCategory": { "auth_ref": [ "r461" ], "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", "verboseLabel": "Entity Filer Category" } } }, "localname": "EntityFilerCategory", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "edgarStateCountryItemType" }, "dei_EntityInteractiveDataCurrent": { "auth_ref": [ "r465" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "yesNoItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r461" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityShellCompany": { "auth_ref": [ "r461" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_EntitySmallBusiness": { "auth_ref": [ "r461" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_EntityTaxIdentificationNumber": { "auth_ref": [ "r461" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "employerIdItemType" }, "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/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_Security12bTitle": { "auth_ref": [ "r460" ], "lang": { "en-us": { "role": { "documentation": "Title of a 12(b) registered security.", "label": "Title of 12(b) Security", "terseLabel": "Title of 12(b) Security" } } }, "localname": "Security12bTitle", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "securityTitleItemType" }, "dei_SecurityExchangeName": { "auth_ref": [ "r462" ], "lang": { "en-us": { "role": { "documentation": "Name of the Exchange on which a security is registered.", "label": "Security Exchange Name", "terseLabel": "Security Exchange Name" } } }, "localname": "SecurityExchangeName", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "edgarExchangeCodeItemType" }, "dei_TradingSymbol": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Trading symbol of an instrument as listed on an exchange.", "label": "Trading Symbol", "terseLabel": "Trading Symbol" } } }, "localname": "TradingSymbol", "nsuri": "http://xbrl.sec.gov/dei/2022", "presentation": [ "http://c4therapeutics.com/role/Cover" ], "xbrltype": "tradingSymbolItemType" }, "srt_MaximumMember": { "auth_ref": [ "r227", "r228", "r229", "r230", "r287", "r395", "r404", "r431", "r432", "r447", "r452", "r459", "r494", "r503", "r504", "r505", "r506", "r507", "r508" ], "lang": { "en-us": { "role": { "label": "Maximum [Member]", "terseLabel": "Maximum" } } }, "localname": "MaximumMember", "nsuri": "http://fasb.org/srt/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_MinimumMember": { "auth_ref": [ "r227", "r228", "r229", "r230", "r287", "r395", "r404", "r431", "r432", "r447", "r452", "r459", "r494", "r503", "r504", "r505", "r506", "r507", "r508" ], "lang": { "en-us": { "role": { "label": "Minimum [Member]", "terseLabel": "Minimum" } } }, "localname": "MinimumMember", "nsuri": "http://fasb.org/srt/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_ProductOrServiceAxis": { "auth_ref": [ "r196", "r396", "r448", "r458", "r489", "r490", "r495", "r511" ], "lang": { "en-us": { "role": { "label": "Product and Service [Axis]", "terseLabel": "Product and Service" } } }, "localname": "ProductOrServiceAxis", "nsuri": "http://fasb.org/srt/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_ProductsAndServicesDomain": { "auth_ref": [ "r196", "r396", "r448", "r458", "r489", "r490", "r495", "r511" ], "lang": { "en-us": { "role": { "label": "Product and Service [Domain]", "terseLabel": "Product and Service" } } }, "localname": "ProductsAndServicesDomain", "nsuri": "http://fasb.org/srt/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_RangeAxis": { "auth_ref": [ "r227", "r228", "r229", "r230", "r280", "r287", "r314", "r315", "r316", "r371", "r395", "r404", "r431", "r432", "r447", "r452", "r459", "r488", "r494", "r504", "r505", "r506", "r507", "r508" ], "lang": { "en-us": { "role": { "label": "Statistical Measurement [Axis]", "terseLabel": "Statistical Measurement" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/srt/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_RangeMember": { "auth_ref": [ "r227", "r228", "r229", "r230", "r280", "r287", "r314", "r315", "r316", "r371", "r395", "r404", "r431", "r432", "r447", "r452", "r459", "r488", "r494", "r504", "r505", "r506", "r507", "r508" ], "lang": { "en-us": { "role": { "label": "Statistical Measurement [Domain]", "terseLabel": "Statistical Measurement" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/srt/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "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/2022", "xbrltype": "stringItemType" }, "us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for accounts payable, accrued expenses, and other liabilities that are classified as current at the end of the reporting period.", "label": "Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]", "terseLabel": "Accrued expenses and other current liabilities" } } }, "localname": "AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Accruedexpensesandothercurrentliabilities" ], "xbrltype": "textBlockItemType" }, "us-gaap_AccountsPayableCurrent": { "auth_ref": [ "r11", "r457" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "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 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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccountsReceivableNetCurrent": { "auth_ref": [ "r199", "r200" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "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" } } }, "localname": "AccountsReceivableNetCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments": { "auth_ref": [ "r42" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.", "label": "Accretion (Amortization) of Discounts and Premiums, Investments", "negatedLabel": "(Amortization) accretion of (premium) discount on marketable securities" } } }, "localname": "AccretionAmortizationOfDiscountsAndPremiumsInvestments", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedEmployeeBenefitsCurrent": { "auth_ref": [ "r15" ], "calculation": { "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails": { "order": 4.0, "parentTag": "us-gaap_AccruedLiabilitiesAndOtherLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Accrued Employee Benefits, Current", "terseLabel": "Accrued compensation and benefits" } } }, "localname": "AccruedEmployeeBenefitsCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedLiabilitiesAndOtherLiabilities": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.", "label": "Accrued Liabilities and Other Liabilities", "terseLabel": "Accrued expenses and other current liabilities", "totalLabel": "Total accrued expenses and other current liabilities" } } }, "localname": "AccruedLiabilitiesAndOtherLiabilities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails", "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Accrued Liabilities and Other Liabilities [Abstract]", "terseLabel": "Accrued expenses and other current liabilities:" } } }, "localname": "AccruedLiabilitiesAndOtherLiabilitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccruedProfessionalFeesCurrent": { "auth_ref": [ "r15" ], "calculation": { "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails": { "order": 3.0, "parentTag": "us-gaap_AccruedLiabilitiesAndOtherLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Accrued Professional Fees, Current", "terseLabel": "Accrued professional fees" } } }, "localname": "AccruedProfessionalFeesCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": { "auth_ref": [ "r66", "r130" ], "calculation": { "http://c4therapeutics.com/role/PropertyandequipmentDetails": { "order": 2.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentNet", "weight": -1.0 } }, "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", "negatedLabel": "Less: accumulated depreciation" } } }, "localname": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r22", "r23", "r24", "r135", "r401", "r409", "r410" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [ "r21", "r24", "r90", "r364", "r405", "r406", "r467", "r468", "r469", "r477", "r478", "r479" ], "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": "Accumulated Other Comprehensive Loss" } } }, "localname": "AccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "domainItemType" }, "us-gaap_AdditionalPaidInCapitalCommonStock": { "auth_ref": [ "r6" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdditionalPaidInCapitalMember": { "auth_ref": [ "r323", "r324", "r325", "r477", "r478", "r479", "r498" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "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": "Other" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalOther", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": { "auth_ref": [ "r84", "r85", "r289" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.", "label": "APIC, Share-Based Payment Arrangement, Increase for Cost Recognition", "terseLabel": "Stock-based compensation" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "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 loss to cash used in operating activities:" } } }, "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_AllocatedShareBasedCompensationExpense": { "auth_ref": [ "r318" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.", "label": "Share-Based Payment Arrangement, Expense", "verboseLabel": "Total stock-based compensation expense" } } }, "localname": "AllocatedShareBasedCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationScheduleofstockbasedcompensationexpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AmortizationOfDebtDiscountPremium": { "auth_ref": [ "r31", "r41", "r94", "r262" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.", "label": "Amortization of Debt Discount (Premium)", "terseLabel": "Amortization of debt discount \u2212 related party" } } }, "localname": "AmortizationOfDebtDiscountPremium", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": { "auth_ref": [ "r175" ], "lang": { "en-us": { "role": { "documentation": "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.", "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount", "terseLabel": "Total anti-dilutive common stock equivalents (in shares)" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareScheduleofdilutednetlosspershareattributabletocommonstockholdersDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis": { "auth_ref": [ "r49" ], "lang": { "en-us": { "role": { "documentation": "Information by type of antidilutive security.", "label": "Antidilutive Securities [Axis]", "terseLabel": "Antidilutive Securities" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareScheduleofdilutednetlosspershareattributabletocommonstockholdersDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems": { "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": "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]", "terseLabel": "Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareScheduleofdilutednetlosspershareattributabletocommonstockholdersDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesNameDomain": { "auth_ref": [ "r49" ], "lang": { "en-us": { "role": { "documentation": "Incremental common shares attributable to securities that were not included in diluted earnings per share (EPS) because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.", "label": "Antidilutive Securities, Name [Domain]", "terseLabel": "Antidilutive Securities, Name" } } }, "localname": "AntidilutiveSecuritiesNameDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareScheduleofdilutednetlosspershareattributabletocommonstockholdersDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ArrangementsAndNonarrangementTransactionsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.", "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Domain]", "terseLabel": "Collaborative Arrangement and Arrangement Other than Collaborative" } } }, "localname": "ArrangementsAndNonarrangementTransactionsMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Assets": { "auth_ref": [ "r100", "r111", "r132", "r153", "r187", "r190", "r194", "r208", "r231", "r232", "r233", "r234", "r235", "r236", "r237", "r238", "r239", "r333", "r337", "r350", "r457", "r492", "r493", "r501" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets [Abstract]", "terseLabel": "Assets" } } }, "localname": "AssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsCurrent": { "auth_ref": [ "r126", "r136", "r153", "r208", "r231", "r232", "r233", "r234", "r235", "r236", "r237", "r238", "r239", "r333", "r337", "r350", "r457", "r492", "r493", "r501" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "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 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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets, Current [Abstract]", "terseLabel": "Current assets:" } } }, "localname": "AssetsCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsFairValueDisclosure": { "auth_ref": [ "r92" ], "calculation": { "http://c4therapeutics.com/role/FairvaluemeasurementsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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", "totalLabel": "Total cash equivalents and marketable securities" } } }, "localname": "AssetsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": { "auth_ref": [ "r55" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails_1": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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, Accumulated Gross Unrealized Gain, before Tax", "totalLabel": "Gross Unrealized Gains" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": { "auth_ref": [ "r56" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails_1": { "order": 1.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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, Accumulated Gross Unrealized Loss, before Tax", "negatedTotalLabel": "Gross Unrealized Losses" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]", "terseLabel": "Gross Unrealized Losses" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AvailableForsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]", "terseLabel": "Number of Securities" } } }, "localname": "AvailableForsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AwardTypeAxis": { "auth_ref": [ "r292", "r293", "r294", "r295", "r296", "r297", "r298", "r299", "r300", "r301", "r302", "r303", "r304", "r305", "r306", "r307", "r308", "r309", "r310", "r311", "r312", "r313", "r314", "r315", "r316", "r317" ], "lang": { "en-us": { "role": { "documentation": "Information by type of award under share-based payment arrangement.", "label": "Award Type [Axis]", "terseLabel": "Award Type" } } }, "localname": "AwardTypeAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails", "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BasisOfAccountingPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).", "label": "Basis of Accounting, Policy [Policy Text Block]", "terseLabel": "Basis of presentation" } } }, "localname": "BasisOfAccountingPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/SummaryofsignificantaccountingpoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CapitalExpendituresIncurredButNotYetPaid": { "auth_ref": [ "r44", "r45", "r46" ], "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": "Capital expenditures in accounts payable and accrued expenses" } } }, "localname": "CapitalExpendituresIncurredButNotYetPaid", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsAtCarryingValue": { "auth_ref": [ "r43", "r128", "r434" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 }, "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "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", "verboseLabel": "Cash and cash equivalents at end of the period" } } }, "localname": "CashAndCashEquivalentsAtCarryingValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets", "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsAxis": { "auth_ref": [ "r128" ], "lang": { "en-us": { "role": { "documentation": "Information by type of cash and cash equivalent balance.", "label": "Cash and Cash Equivalents [Axis]", "terseLabel": "Cash and Cash Equivalents [Axis]" } } }, "localname": "CashAndCashEquivalentsAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CashAndCashEquivalentsFairValueDisclosure": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/FairvaluemeasurementsDetails": { "order": 2.0, "parentTag": "us-gaap_AssetsFairValueDisclosure", "weight": 1.0 } }, "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/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsAndShortTermInvestments": { "auth_ref": [ "r466" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.", "label": "Cash, Cash Equivalents, and Short-Term Investments", "terseLabel": "Cash, cash equivalents and marketable securities" } } }, "localname": "CashCashEquivalentsAndShortTermInvestments", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/NatureofthebusinessandbasisofpresentationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": { "auth_ref": [ "r37", "r43", "r47" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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", "totalLabel": "Cash, cash equivalents and restricted cash at end of period" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]", "terseLabel": "Reconciliation of cash, cash equivalents and restricted cash:" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": { "auth_ref": [ "r37", "r93" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CollaborativeArrangementDisclosureTextBlock": { "auth_ref": [ "r329", "r330", "r331" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for collaborative arrangements in which the entity is a participant, including a) information about the nature and purpose of such arrangements; b) its rights and obligations thereunder; c) the accounting policy for collaborative arrangements; and d) the income statement classification and amounts attributable to transactions arising from the collaborative arrangement between participants.", "label": "Collaborative Arrangement Disclosure [Text Block]", "terseLabel": "Collaboration and license agreements" } } }, "localname": "CollaborativeArrangementDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Collaborationandlicenseagreements" ], "xbrltype": "textBlockItemType" }, "us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems": { "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": "Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]", "terseLabel": "Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]" } } }, "localname": "CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r19", "r104", "r118" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "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 (see Note 11)" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Commitments and Contingencies Disclosure [Abstract]" } } }, "localname": "CommitmentsAndContingenciesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r69", "r225", "r226", "r427", "r491" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/Commitmentandcontingencies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [ "r477", "r478", "r498" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r5" ], "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 value per share (in dollars per share)" } } }, "localname": "CommonStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r5" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesIssued": { "auth_ref": [ "r5" ], "lang": { "en-us": { "role": { "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.", "label": "Common Stock, Shares, Issued", "terseLabel": "Common stock, shares issued" } } }, "localname": "CommonStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r5", "r73" ], "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", "terseLabel": "Common stock, shares outstanding" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r5", "r457" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "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", "terseLabel": "Common stock, par value of $0.0001 per share; 150,000,000 shares authorized, and 49,052,509 and 48,966,216 shares issued and outstanding as of March\u00a031, 2023 and December\u00a031, 2022, respectively" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNetOfTax": { "auth_ref": [ "r25", "r138", "r140", "r144", "r397", "r402" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "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": "Comprehensive loss" } } }, "localname": "ComprehensiveIncomeNetOfTax", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComputerEquipmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Long lived, depreciable assets that are used in the creation, maintenance and utilization of information systems.", "label": "Computer Equipment [Member]", "terseLabel": "Computer equipment" } } }, "localname": "ComputerEquipmentMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ConsolidationPolicyTextBlock": { "auth_ref": [ "r89", "r436" ], "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": "Consolidation" } } }, "localname": "ConsolidationPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.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": "Construction in progress" } } }, "localname": "ConstructionInProgressMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ContractWithCustomerLiability": { "auth_ref": [ "r273", "r274", "r278" ], "calculation": { "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.", "label": "Contract with Customer, Liability", "totalLabel": "Deferred revenue, total" } } }, "localname": "ContractWithCustomerLiability", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerLiabilityCurrent": { "auth_ref": [ "r273", "r274", "r278" ], "calculation": { "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails": { "order": 1.0, "parentTag": "us-gaap_ContractWithCustomerLiability", "weight": 1.0 }, "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.", "label": "Contract with Customer, Liability, Current", "terseLabel": "Deferred revenue, current" } } }, "localname": "ContractWithCustomerLiabilityCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerLiabilityNoncurrent": { "auth_ref": [ "r273", "r274", "r278" ], "calculation": { "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails": { "order": 2.0, "parentTag": "us-gaap_ContractWithCustomerLiability", "weight": 1.0 }, "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.", "label": "Contract with Customer, Liability, Noncurrent", "terseLabel": "Deferred revenue, net of current" } } }, "localname": "ContractWithCustomerLiabilityNoncurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerLiabilityRevenueRecognized": { "auth_ref": [ "r279" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.", "label": "Contract with Customer, Liability, Revenue Recognized", "terseLabel": "Revenue recognized that was included in the contract liability at the beginning of the period" } } }, "localname": "ContractWithCustomerLiabilityRevenueRecognized", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofsupplementalfinancialinformationrelatedtocollaborationandlicenseagreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod": { "auth_ref": [ "r275" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price.", "label": "Contract with Customer, Performance Obligation Satisfied in Previous Period", "terseLabel": "Revenue recognized from performance obligations fully or partially satisfied in previous periods" } } }, "localname": "ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofsupplementalfinancialinformationrelatedtocollaborationandlicenseagreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractsReceivableClaimsAndUncertainAmounts": { "auth_ref": [ "r123", "r134" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of billed or unbilled claims or other similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts.", "label": "Contracts Receivable, Claims and Uncertain Amounts", "terseLabel": "Amount eligible to receive" } } }, "localname": "ContractsReceivableClaimsAndUncertainAmounts", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CorporateDebtSecuritiesMember": { "auth_ref": [ "r449", "r451", "r512" ], "lang": { "en-us": { "role": { "documentation": "Debt securities issued by domestic or foreign corporate business, banks and other entities with a promise of repayment.", "label": "Corporate Debt Securities [Member]", "terseLabel": "Corporate debt securities" } } }, "localname": "CorporateDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "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" } } }, "localname": "CreditFacilityAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "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" } } }, "localname": "CreditFacilityDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "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/2022", "xbrltype": "stringItemType" }, "us-gaap_DebtDisclosureTextBlock": { "auth_ref": [ "r72", "r152", "r245", "r246", "r247", "r248", "r249", "r250", "r251", "r256", "r263", "r264", "r266" ], "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": "Long-term debt \u2013 related party" } } }, "localname": "DebtDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Longtermdebtrelatedparty" ], "xbrltype": "textBlockItemType" }, "us-gaap_DebtInstrumentAxis": { "auth_ref": [ "r1", "r2", "r3", "r101", "r102", "r110", "r154", "r240", "r241", "r242", "r243", "r244", "r246", "r252", "r253", "r254", "r255", "r257", "r258", "r259", "r260", "r261", "r262", "r357", "r442", "r443", "r444", "r445", "r446", "r474" ], "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" } } }, "localname": "DebtInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentBasisSpreadOnVariableRate1": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage points added to the reference rate to compute the variable rate on the debt instrument.", "label": "Debt Instrument, Basis Spread on Variable Rate", "terseLabel": "Applicable margin rate" } } }, "localname": "DebtInstrumentBasisSpreadOnVariableRate1", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentCarryingAmount": { "auth_ref": [ "r3", "r102", "r110", "r267" ], "calculation": { "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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", "totalLabel": "Outstanding principal amount of long-term debt \u2014 related party" } } }, "localname": "DebtInstrumentCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentInterestRateDuringPeriod": { "auth_ref": [ "r17", "r95", "r259" ], "lang": { "en-us": { "role": { "documentation": "The average effective interest rate during the reporting period.", "label": "Debt Instrument, Interest Rate During Period", "terseLabel": "Interest at variable rate" } } }, "localname": "DebtInstrumentInterestRateDuringPeriod", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentNameDomain": { "auth_ref": [ "r18", "r154", "r240", "r241", "r242", "r243", "r244", "r246", "r252", "r253", "r254", "r255", "r257", "r258", "r259", "r260", "r261", "r262", "r357", "r442", "r443", "r444", "r445", "r446", "r474" ], "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" } } }, "localname": "DebtInstrumentNameDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet": { "auth_ref": [ "r96", "r252", "r268", "r443", "r444" ], "calculation": { "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails": { "order": 2.0, "parentTag": "us-gaap_LongTermDebtNoncurrent", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of unamortized debt discount (premium) and debt issuance costs.", "label": "Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net", "negatedTerseLabel": "Less: Unamortized debt issuance costs and debt discount, net of current" } } }, "localname": "DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest": { "auth_ref": [ "r215" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount excluding accrued interest, of allowance for credit loss on 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, Allowance for Credit Loss, Excluding Accrued Interest", "terseLabel": "Allowance for credit loss" } } }, "localname": "DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss": { "auth_ref": [ "r485" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails_1": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amortized cost excluding accrued interest, after allowance for credit loss, 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, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss", "totalLabel": "Amortized Cost" } } }, "localname": "DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossCurrent": { "auth_ref": [ "r485" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": 1.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.", "label": "Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss, Current", "totalLabel": "Amortized Cost" } } }, "localname": "DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent": { "auth_ref": [ "r485" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent.", "label": "Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss, Noncurrent", "totalLabel": "Amortized Cost" } } }, "localname": "DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger": { "auth_ref": [ "r207", "r220", "r441" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": 1.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "weight": 1.0 } }, "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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer", "terseLabel": "Marketable securities in continuous unrealized loss position for greater than 12 months" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [ "r207", "r220" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": 1.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss", "negatedLabel": "Marketable securities in continuous unrealized loss position for greater than 12 months" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions": { "auth_ref": [ "r486" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions", "terseLabel": "Marketable securities in continuous unrealized loss position for greater than 12 months, number of securities" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "integerItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months": { "auth_ref": [ "r207", "r220", "r441" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "weight": 1.0 } }, "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), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months", "terseLabel": "Marketable securities in continuous unrealized loss position for less than 12 months" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [ "r207", "r220" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss", "negatedLabel": "Marketable securities in continuous unrealized loss position for less than 12 months" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions": { "auth_ref": [ "r486" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": 1.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without an allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions", "terseLabel": "Marketable securities in continuous unrealized loss position for less than 12 months, number of securities" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "integerItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest": { "auth_ref": [ "r485" ], "calculation": { "http://c4therapeutics.com/role/FairvaluemeasurementsDetails": { "order": 1.0, "parentTag": "us-gaap_AssetsFairValueDisclosure", "weight": 1.0 }, "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails_1": { "order": 3.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount excluding accrued interest, 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, Excluding Accrued Interest", "terseLabel": "Marketable securities", "totalLabel": "Fair Value" } } }, "localname": "DebtSecuritiesAvailableForSaleExcludingAccruedInterest", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent": { "auth_ref": [ "r485" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 }, "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": 3.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.", "label": "Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current", "terseLabel": "Marketable securities, current", "verboseLabel": "Fair Value" } } }, "localname": "DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestNoncurrent": { "auth_ref": [ "r485" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent.", "label": "Debt Securities, Available-for-Sale, Excluding Accrued Interest, Noncurrent", "terseLabel": "Fair Value", "verboseLabel": "Marketable securities, non-current" } } }, "localname": "DebtSecuritiesAvailableForSaleExcludingAccruedInterestNoncurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition": { "auth_ref": [ "r204", "r216", "r441" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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), in unrealized loss position without allowance for credit loss.", "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position", "totalLabel": "Total marketable securities in unrealized loss position" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss": { "auth_ref": [ "r205", "r217" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss", "negatedTotalLabel": "Total marketable securities in unrealized loss position" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock": { "auth_ref": [ "r203", "r441", "r487" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]", "terseLabel": "Summary of marketable securities in unrealized loss position" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions": { "auth_ref": [ "r206", "r218" ], "calculation": { "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-us": { "role": { "documentation": "Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions", "totalLabel": "Total marketable securities in unrealized loss position, number of securities" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "integerItemType" }, "us-gaap_DebtSecuritiesAvailableforSaleUnrealizedLossPositionAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position [Abstract]", "terseLabel": "Fair Value" } } }, "localname": "DebtSecuritiesAvailableforSaleUnrealizedLossPositionAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "stringItemType" }, "us-gaap_Depreciation": { "auth_ref": [ "r41", "r64" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.", "label": "Depreciation", "terseLabel": "Depreciation and amortization expense" } } }, "localname": "Depreciation", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows", "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": { "auth_ref": [ "r291", "r319", "r320", "r322", "r326", "r453" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for share-based payment arrangement.", "label": "Share-Based Payment Arrangement [Text Block]", "terseLabel": "Stock-based compensation" } } }, "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Stockbasedcompensation" ], "xbrltype": "textBlockItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Share-Based Payment Arrangement [Abstract]", "terseLabel": "Share-based Payment Arrangement [Abstract]" } } }, "localname": "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Earnings Per Share [Abstract]", "terseLabel": "Earnings Per Share [Abstract]" } } }, "localname": "EarningsPerShareAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasic": { "auth_ref": [ "r145", "r160", "r161", "r162", "r163", "r164", "r168", "r170", "r172", "r173", "r174", "r178", "r341", "r342", "r398", "r403", "r438" ], "lang": { "en-us": { "role": { "documentation": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.", "label": "Earnings Per Share, Basic", "terseLabel": "Net loss per share \u2212 basic (in dollars per share)" } } }, "localname": "EarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "http://c4therapeutics.com/role/LosspershareScheduleofbasicanddilutedlosspershareDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDiluted": { "auth_ref": [ "r145", "r160", "r161", "r162", "r163", "r164", "r170", "r172", "r173", "r174", "r178", "r341", "r342", "r398", "r403", "r438" ], "lang": { "en-us": { "role": { "documentation": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.", "label": "Earnings Per Share, Diluted", "terseLabel": "Net loss per share \u2212 diluted (in dollars per share)" } } }, "localname": "EarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "http://c4therapeutics.com/role/LosspershareScheduleofbasicanddilutedlosspershareDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareTextBlock": { "auth_ref": [ "r175", "r176", "r177", "r179" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for earnings per share.", "label": "Earnings Per Share [Text Block]", "terseLabel": "Loss per share" } } }, "localname": "EarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Losspershare" ], "xbrltype": "textBlockItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems": { "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": "Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]", "terseLabel": "Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]" } } }, "localname": "EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationScheduleofstockbasedcompensationexpenseDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized": { "auth_ref": [ "r321" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cost not yet recognized for nonvested award under share-based payment arrangement.", "label": "Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount", "terseLabel": "Unrecognized compensation costs" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1": { "auth_ref": [ "r321" ], "lang": { "en-us": { "role": { "documentation": "Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition", "terseLabel": "Expected to be recognized over a weighted average period" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_EmployeeStockOptionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share-based payment arrangement granting right, subject to vesting and other restrictions, to purchase or sell certain number of shares at predetermined price for specified period of time.", "label": "Share-Based Payment Arrangement, Option [Member]", "terseLabel": "Stock Options" } } }, "localname": "EmployeeStockOptionMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r73", "r124", "r141", "r142", "r143", "r155", "r156", "r157", "r159", "r165", "r167", "r180", "r209", "r272", "r323", "r324", "r325", "r327", "r328", "r340", "r351", "r352", "r353", "r354", "r355", "r356", "r364", "r405", "r406", "r407" ], "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" } } }, "localname": "EquityComponentDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r343", "r344", "r348" ], "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 Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r254", "r281", "r282", "r283", "r284", "r285", "r286", "r344", "r368", "r369", "r370", "r443", "r444", "r449", "r450", "r451" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementFrequencyAxis": { "auth_ref": [ "r343", "r344", "r345", "r346", "r349" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "stringItemType" }, "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/2022", "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r347" ], "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 measurements" } } }, "localname": "FairValueDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Fairvaluemeasurements" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r254", "r281", "r286", "r344", "r368", "r449", "r450", "r451" ], "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 1" } } }, "localname": "FairValueInputsLevel1Member", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel2Member": { "auth_ref": [ "r254", "r281", "r286", "r344", "r369", "r443", "r444", "r449", "r450", "r451" ], "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 2" } } }, "localname": "FairValueInputsLevel2Member", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel3Member": { "auth_ref": [ "r254", "r281", "r282", "r283", "r284", "r285", "r286", "r344", "r370", "r443", "r444", "r449", "r450", "r451" ], "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 3" } } }, "localname": "FairValueInputsLevel3Member", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": { "auth_ref": [ "r254", "r281", "r282", "r283", "r284", "r285", "r286", "r368", "r369", "r370", "r443", "r444", "r449", "r450", "r451" ], "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]" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsRecurringMember": { "auth_ref": [ "r347", "r349" ], "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": "Recurring" } } }, "localname": "FairValueMeasurementsRecurringMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancialInstrumentAxis": { "auth_ref": [ "r201", "r202", "r210", "r211", "r212", "r213", "r214", "r219", "r221", "r222", "r265", "r271", "r339", "r365", "r366", "r367", "r368", "r369", "r370", "r371", "r372", "r373", "r374", "r375", "r376", "r377", "r378", "r379", "r380", "r381", "r382", "r383", "r384", "r385", "r386", "r387", "r388", "r389", "r390", "r391", "r392", "r393", "r394", "r441", "r481", "r482", "r483", "r513", "r514", "r515", "r516", "r517", "r518", "r519" ], "lang": { "en-us": { "role": { "documentation": "Information by type of financial instrument.", "label": "Financial Instrument [Axis]", "terseLabel": "Financial Instrument" } } }, "localname": "FinancialInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FurnitureAndFixturesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.", "label": "Furniture and Fixtures [Member]", "terseLabel": "Furniture and fixtures" } } }, "localname": "FurnitureAndFixturesMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_GeneralAndAdministrativeExpense": { "auth_ref": [ "r29" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_OperatingExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.", "label": "General and Administrative Expense", "terseLabel": "General and administrative" } } }, "localname": "GeneralAndAdministrativeExpense", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_GeneralAndAdministrativeExpenseMember": { "auth_ref": [ "r27" ], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption encompassing general and administrative expense.", "label": "General and Administrative Expense [Member]", "terseLabel": "General and administrative" } } }, "localname": "GeneralAndAdministrativeExpenseMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationScheduleofstockbasedcompensationexpenseDetails" ], "xbrltype": "domainItemType" }, "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/2022", "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementLocationAxis": { "auth_ref": [ "r223", "r224" ], "lang": { "en-us": { "role": { "documentation": "Information by location in the income statement.", "label": "Income Statement Location [Axis]", "terseLabel": "Income Statement Location" } } }, "localname": "IncomeStatementLocationAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationScheduleofstockbasedcompensationexpenseDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementLocationDomain": { "auth_ref": [ "r224" ], "lang": { "en-us": { "role": { "documentation": "Location in the income statement.", "label": "Income Statement Location [Domain]", "terseLabel": "Income Statement Location" } } }, "localname": "IncomeStatementLocationDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationScheduleofstockbasedcompensationexpenseDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncreaseDecreaseInAccountsPayable": { "auth_ref": [ "r40" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 9.0, "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", "terseLabel": "Accounts payable" } } }, "localname": "IncreaseDecreaseInAccountsPayable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccountsReceivable": { "auth_ref": [ "r40" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.", "label": "Increase (Decrease) in Accounts Receivable", "negatedLabel": "Accounts receivable" } } }, "localname": "IncreaseDecreaseInAccountsReceivable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities": { "auth_ref": [ "r472" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in accrued expenses, and obligations classified as other.", "label": "Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities", "terseLabel": "Accrued expenses and other current liabilities" } } }, "localname": "IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInDeferredRevenue": { "auth_ref": [ "r435" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 12.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.", "label": "Increase (Decrease) in Deferred Revenue", "terseLabel": "Deferred revenue" } } }, "localname": "IncreaseDecreaseInDeferredRevenue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInOperatingLeaseLiability": { "auth_ref": [ "r472", "r500" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 11.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in obligation for operating lease.", "label": "Increase (Decrease) in Operating Lease Liability", "terseLabel": "Operating lease liability" } } }, "localname": "IncreaseDecreaseInOperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets": { "auth_ref": [ "r40" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in prepaid expenses, and assets classified as other.", "label": "Increase (Decrease) in Prepaid Expense and Other Assets", "negatedLabel": "Prepaid expenses and other current and long-term assets" } } }, "localname": "IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "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 Stockholders' Equity [Roll Forward]" } } }, "localname": "IncreaseDecreaseInStockholdersEquityRollForward", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "stringItemType" }, "us-gaap_InterestAndOtherIncome": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_NonoperatingIncomeExpense", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).", "label": "Interest and Other Income", "terseLabel": "Interest and other income, net" } } }, "localname": "InterestAndOtherIncome", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestPaidNet": { "auth_ref": [ "r146", "r149", "r150" ], "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", "terseLabel": "Cash paid for interest \u2212 related party" } } }, "localname": "InterestPaidNet", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentTypeAxis": { "auth_ref": [ "r411", "r412", "r413", "r414", "r415", "r416", "r417", "r418", "r419", "r420", "r421", "r422", "r423", "r424", "r425" ], "lang": { "en-us": { "role": { "documentation": "Information by type of investments.", "label": "Investment Type [Axis]", "terseLabel": "Investment Type" } } }, "localname": "InvestmentTypeAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentTypeCategorizationMember": { "auth_ref": [ "r411", "r412", "r413", "r414", "r415", "r416", "r417", "r418", "r419", "r420", "r421", "r422", "r423", "r424", "r425" ], "lang": { "en-us": { "role": { "documentation": "Asset obtained to generate income or appreciate in value.", "label": "Investments [Domain]", "terseLabel": "Investments" } } }, "localname": "InvestmentTypeCategorizationMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock": { "auth_ref": [ "r63", "r98", "r108", "r121", "r433" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for investments in certain debt and equity securities.", "label": "Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]", "terseLabel": "Marketable securities" } } }, "localname": "InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Marketablesecurities" ], "xbrltype": "textBlockItemType" }, "us-gaap_LeaseholdsAndLeaseholdImprovementsMember": { "auth_ref": [ "r65" ], "lang": { "en-us": { "role": { "documentation": "Asset held by lessee under finance lease and addition or improvement to asset held under lease arrangement.", "label": "Leaseholds and Leasehold Improvements [Member]", "terseLabel": "Leasehold improvements" } } }, "localname": "LeaseholdsAndLeaseholdImprovementsMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LeasesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Leases [Abstract]", "terseLabel": "Leases [Abstract]" } } }, "localname": "LeasesAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "xbrltype": "stringItemType" }, "us-gaap_LesseeOperatingLeasesTextBlock": { "auth_ref": [ "r363" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability.", "label": "Lessee, Operating Leases [Text Block]", "terseLabel": "Leases" } } }, "localname": "LesseeOperatingLeasesTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Leases" ], "xbrltype": "textBlockItemType" }, "us-gaap_Liabilities": { "auth_ref": [ "r14", "r153", "r208", "r231", "r232", "r233", "r234", "r235", "r236", "r237", "r238", "r239", "r334", "r337", "r338", "r350", "r439", "r492", "r501", "r502" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.", "label": "Liabilities", "totalLabel": "Total liabilities" } } }, "localname": "Liabilities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r10", "r103", "r115", "r457", "r475", "r484", "r499" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "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 stockholders\u2019 equity" } } }, "localname": "LiabilitiesAndStockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities and Equity [Abstract]", "terseLabel": "Liabilities and Stockholders\u2019 Equity" } } }, "localname": "LiabilitiesAndStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesCurrent": { "auth_ref": [ "r16", "r127", "r153", "r208", "r231", "r232", "r233", "r234", "r235", "r236", "r237", "r238", "r239", "r334", "r337", "r338", "r350", "r457", "r492", "r501", "r502" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Liabilities", "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities, Current [Abstract]", "terseLabel": "Current liabilities:" } } }, "localname": "LiabilitiesCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCredit": { "auth_ref": [ "r3", "r102", "r110" ], "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": "Amount withdrawn" } } }, "localname": "LineOfCredit", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": { "auth_ref": [ "r12" ], "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": "Aggregate principal borrowing amount" } } }, "localname": "LineOfCreditFacilityMaximumBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LondonInterbankOfferedRateLIBORMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Interest rate at which a bank borrows funds from other banks in the London interbank market.", "label": "London Interbank Offered Rate (LIBOR) [Member]", "terseLabel": "LIBOR" } } }, "localname": "LondonInterbankOfferedRateLIBORMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LongTermDebt": { "auth_ref": [ "r3", "r102", "r112", "r253", "r269", "r443", "r444" ], "calculation": { "http://c4therapeutics.com/role/LongtermdebtrelatedpartySummaryoffutureminimumpaymentsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.", "label": "Long-Term Debt", "totalLabel": "Total undiscounted, minimum long-term debt payments" } } }, "localname": "LongTermDebt", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartySummaryoffutureminimumpaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtByMaturityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Long-Term Debt, Fiscal Year Maturity [Abstract]", "terseLabel": "Long-term Debt, Fiscal Year Maturity [Abstract]" } } }, "localname": "LongTermDebtByMaturityAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartySummaryoffutureminimumpaymentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongTermDebtCurrent": { "auth_ref": [ "r13" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "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 \u2212 related party, current and net of discount" } } }, "localname": "LongTermDebtCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths": { "auth_ref": [ "r70", "r154", "r258" ], "calculation": { "http://c4therapeutics.com/role/LongtermdebtrelatedpartySummaryoffutureminimumpaymentsDetails": { "order": 2.0, "parentTag": "us-gaap_LongTermDebt", "weight": 1.0 } }, "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": "Less: Long-term debt \u2014 related party, current" } } }, "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartySummaryoffutureminimumpaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear": { "auth_ref": [ "r476" ], "calculation": { "http://c4therapeutics.com/role/LongtermdebtrelatedpartySummaryoffutureminimumpaymentsDetails": { "order": 1.0, "parentTag": "us-gaap_LongTermDebt", "weight": 1.0 } }, "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 remainder of current fiscal year.", "label": "Long-Term Debt, Maturity, Remainder of Fiscal Year", "terseLabel": "2023 (nine months ending December 31)" } } }, "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartySummaryoffutureminimumpaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtNoncurrent": { "auth_ref": [ "r133" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 }, "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.", "label": "Long-Term Debt, Excluding Current Maturities", "terseLabel": "Long-term debt \u2212 related party, net of current and discount", "totalLabel": "Long-term debt \u2212 related party, net of current and discount" } } }, "localname": "LongTermDebtNoncurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets", "http://c4therapeutics.com/role/LongtermdebtrelatedpartyScheduleoflongtermdebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongtermDebtTypeAxis": { "auth_ref": [ "r18" ], "lang": { "en-us": { "role": { "documentation": "Information by type of long-term debt.", "label": "Long-Term Debt, Type [Axis]", "terseLabel": "Long-term Debt, Type" } } }, "localname": "LongtermDebtTypeAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongtermDebtTypeDomain": { "auth_ref": [ "r18", "r71" ], "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" } } }, "localname": "LongtermDebtTypeDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MarketableSecuritiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Marketable Securities [Abstract]", "terseLabel": "Marketable securities:" } } }, "localname": "MarketableSecuritiesAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "xbrltype": "stringItemType" }, "us-gaap_MarketableSecuritiesTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.", "label": "Marketable Securities [Table Text Block]", "terseLabel": "Summary of marketable securities" } } }, "localname": "MarketableSecuritiesTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_MarketableSecuritiesUnrealizedGainLoss": { "auth_ref": [ "r28" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of unrealized gain (loss) on investment in marketable security.", "label": "Marketable Securities, Unrealized Gain (Loss)", "terseLabel": "Unrealized gain (loss) on marketable securities", "verboseLabel": "Change in unrealized loss, net on marketable securities" } } }, "localname": "MarketableSecuritiesUnrealizedGainLoss", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_MoneyMarketFundsMember": { "auth_ref": [ "r496" ], "lang": { "en-us": { "role": { "documentation": "Fund that invests in short-term money-market instruments, for example, but not limited to, commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and other highly liquid securities.", "label": "Money Market Funds [Member]", "terseLabel": "Money market funds" } } }, "localname": "MoneyMarketFundsMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r148" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 3.0, "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 (used in) provided by financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]", "terseLabel": "Cash flows (used in) provided by financing activities:" } } }, "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r148" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "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 provided by (used in) investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]", "terseLabel": "Cash flows provided by (used in) investing activities:" } } }, "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r37", "r39", "r42" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "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 used in operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Cash flows used in operating activities:" } } }, "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r26", "r42", "r105", "r119", "r125", "r137", "r139", "r143", "r153", "r158", "r160", "r161", "r162", "r163", "r166", "r167", "r171", "r187", "r189", "r193", "r195", "r208", "r231", "r232", "r233", "r234", "r235", "r236", "r237", "r238", "r239", "r342", "r350", "r440", "r492" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 } }, "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 loss", "totalLabel": "Net loss" } } }, "localname": "NetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity", "http://c4therapeutics.com/role/LosspershareScheduleofbasicanddilutedlosspershareDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Income (Loss) Available to Common Stockholders, Basic [Abstract]", "terseLabel": "Numerator:" } } }, "localname": "NetIncomeLossAvailableToCommonStockholdersBasicAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareScheduleofbasicanddilutedlosspershareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NoncashInvestingAndFinancingItemsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Noncash Investing and Financing Items [Abstract]", "terseLabel": "Supplemental disclosures of non-cash investing and financing activities:" } } }, "localname": "NoncashInvestingAndFinancingItemsAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NonoperatingIncomeExpense": { "auth_ref": [ "r30" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).", "label": "Nonoperating Income (Expense)", "totalLabel": "Total other income (expense), net" } } }, "localname": "NonoperatingIncomeExpense", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_NonoperatingIncomeExpenseAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Nonoperating Income (Expense) [Abstract]", "terseLabel": "Other income (expense), net:" } } }, "localname": "NonoperatingIncomeExpenseAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "stringItemType" }, "us-gaap_OfficeEquipmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tangible personal property used in an office setting. Examples include, but are not limited to, computers, copiers and fax machine.", "label": "Office Equipment [Member]", "terseLabel": "Office equipment" } } }, "localname": "OfficeEquipmentMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OperatingExpenses": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_OperatingIncomeLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.", "label": "Operating Expenses", "totalLabel": "Total operating expenses" } } }, "localname": "OperatingExpenses", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingExpensesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Operating Expenses [Abstract]", "terseLabel": "Operating expenses:" } } }, "localname": "OperatingExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "stringItemType" }, "us-gaap_OperatingIncomeLoss": { "auth_ref": [ "r187", "r189", "r193", "r195", "r440" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLoss", "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)", "totalLabel": "Loss from operations" } } }, "localname": "OperatingIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiabilityCurrent": { "auth_ref": [ "r359" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "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", "terseLabel": "Operating lease liability, current" } } }, "localname": "OperatingLeaseLiabilityCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiabilityNoncurrent": { "auth_ref": [ "r359" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Liabilities", "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 liability, net of current" } } }, "localname": "OperatingLeaseLiabilityNoncurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasePayments": { "auth_ref": [ "r360", "r361" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.", "label": "Operating Lease, Payments", "terseLabel": "Cash paid for leases" } } }, "localname": "OperatingLeasePayments", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseRightOfUseAsset": { "auth_ref": [ "r358" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Assets", "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": "Right-of-use asset" } } }, "localname": "OperatingLeaseRightOfUseAsset", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense": { "auth_ref": [ "r473" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of amortization expense for right-of-use asset from operating lease.", "label": "Operating Lease, Right-of-Use Asset, Amortization Expense", "terseLabel": "Reduction in carrying amount of right-of-use asset" } } }, "localname": "OperatingLeaseRightOfUseAssetAmortizationExpense", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Organization, Consolidation and Presentation of Financial Statements [Abstract]", "terseLabel": "Organization, Consolidation and Presentation of Financial Statements [Abstract]" } } }, "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "xbrltype": "stringItemType" }, "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock": { "auth_ref": [ "r0", "r91" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.", "label": "Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]", "terseLabel": "Nature of the business and basis of presentation" } } }, "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Natureofthebusinessandbasisofpresentation" ], "xbrltype": "textBlockItemType" }, "us-gaap_OtherAssetsNoncurrent": { "auth_ref": [ "r131" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 6.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of noncurrent assets classified as other.", "label": "Other Assets, Noncurrent", "terseLabel": "Other assets" } } }, "localname": "OtherAssetsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Other Comprehensive Income (Loss), Net of Tax [Abstract]", "terseLabel": "Other comprehensive income (loss)" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "stringItemType" }, "us-gaap_OtherLiabilitiesCurrent": { "auth_ref": [ "r15", "r457" ], "calculation": { "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails": { "order": 2.0, "parentTag": "us-gaap_AccruedLiabilitiesAndOtherLiabilities", "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", "terseLabel": "Other" } } }, "localname": "OtherLiabilitiesCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherOperatingActivitiesCashFlowStatement": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 13.0, "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" } } }, "localname": "OtherOperatingActivitiesCashFlowStatement", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PayablesAndAccrualsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Payables and Accruals [Abstract]", "terseLabel": "Payables and Accruals [Abstract]" } } }, "localname": "PayablesAndAccrualsAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "xbrltype": "stringItemType" }, "us-gaap_PaymentsForRepurchaseOfCommonStock": { "auth_ref": [ "r34" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow to reacquire common stock during the period.", "label": "Payments for Repurchase of Common Stock", "negatedTerseLabel": "Payments for repurchase of common stock for tax withholding" } } }, "localname": "PaymentsForRepurchaseOfCommonStock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDebtExtinguishmentCosts": { "auth_ref": [ "r36" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.", "label": "Payment for Debt Extinguishment or Debt Prepayment Cost", "terseLabel": "Prepayment fee" } } }, "localname": "PaymentsOfDebtExtinguishmentCosts", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireMarketableSecurities": { "auth_ref": [ "r54" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash outflow for purchase of marketable security.", "label": "Payments to Acquire Marketable Securities", "negatedLabel": "Purchases of marketable securities" } } }, "localname": "PaymentsToAcquireMarketableSecurities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": { "auth_ref": [ "r32" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.", "label": "Payments to Acquire Property, Plant, and Equipment", "negatedLabel": "Purchases of property and equipment" } } }, "localname": "PaymentsToAcquirePropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PerformanceSharesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share-based payment arrangement awarded for meeting performance target.", "label": "Performance Shares [Member]", "terseLabel": "Performance-based RSUs" } } }, "localname": "PerformanceSharesMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PreferredStockParOrStatedValuePerShare": { "auth_ref": [ "r4", "r270" ], "lang": { "en-us": { "role": { "documentation": "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.", "label": "Preferred Stock, Par or Stated Value Per Share", "terseLabel": "Preferred stock, par value per share (in dollars per share)" } } }, "localname": "PreferredStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockSharesAuthorized": { "auth_ref": [ "r4" ], "lang": { "en-us": { "role": { "documentation": "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.", "label": "Preferred Stock, Shares Authorized", "terseLabel": "Preferred stock, shares authorized" } } }, "localname": "PreferredStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesIssued": { "auth_ref": [ "r4", "r270" ], "lang": { "en-us": { "role": { "documentation": "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.", "label": "Preferred Stock, Shares Issued", "terseLabel": "Preferred stock, shares issued" } } }, "localname": "PreferredStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesOutstanding": { "auth_ref": [ "r4" ], "lang": { "en-us": { "role": { "documentation": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.", "label": "Preferred Stock, Shares Outstanding", "terseLabel": "Preferred stock, shares outstanding" } } }, "localname": "PreferredStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockValue": { "auth_ref": [ "r4", "r457" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Preferred Stock, Value, Issued", "terseLabel": "Preferred stock, par value of $0.0001 per share; 10,000,000 shares authorized, and no shares issued or outstanding as of March\u00a031, 2023 and December\u00a031, 2022, respectively" } } }, "localname": "PreferredStockValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrepaidExpenseAndOtherAssetsCurrent": { "auth_ref": [ "r466" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "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": "Prepaid expenses and other current assets" } } }, "localname": "PrepaidExpenseAndOtherAssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromCollaborators": { "auth_ref": [ "r38" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash received from collaborators during the current period.", "label": "Proceeds from Collaborators", "terseLabel": "Payment received" } } }, "localname": "ProceedsFromCollaborators", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromPaymentsForOtherFinancingActivities": { "auth_ref": [ "r470", "r471" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "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" } } }, "localname": "ProceedsFromPaymentsForOtherFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities": { "auth_ref": [], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.", "label": "Proceeds from Sale and Maturity of Marketable Securities", "terseLabel": "Proceeds from maturities of marketable securities" } } }, "localname": "ProceedsFromSaleAndMaturityOfMarketableSecurities", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromStockOptionsExercised": { "auth_ref": [ "r33", "r82" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow from exercise of option under share-based payment arrangement.", "label": "Proceeds from Stock Options Exercised", "terseLabel": "Proceeds from exercise of stock options" } } }, "localname": "ProceedsFromStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProfitLoss": { "auth_ref": [ "r125", "r137", "r139", "r147", "r153", "r158", "r166", "r167", "r187", "r189", "r193", "r195", "r208", "r231", "r232", "r233", "r234", "r235", "r236", "r237", "r238", "r239", "r332", "r335", "r336", "r342", "r350", "r399", "r440", "r454", "r455", "r469", "r492" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.", "label": "Net Income (Loss), Including Portion Attributable to Noncontrolling Interest", "negatedLabel": "Net loss", "terseLabel": "Net loss" } } }, "localname": "ProfitLoss", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows", "http://c4therapeutics.com/role/NatureofthebusinessandbasisofpresentationDetails" ], "xbrltype": "monetaryItemType" }, "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/2022", "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentByTypeAxis": { "auth_ref": [ "r67" ], "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": "Long-Lived Tangible Asset" } } }, "localname": "PropertyPlantAndEquipmentByTypeAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock": { "auth_ref": [ "r68", "r428", "r429", "r430" ], "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 and equipment" } } }, "localname": "PropertyPlantAndEquipmentDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Propertyandequipment" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentGross": { "auth_ref": [ "r65", "r129" ], "calculation": { "http://c4therapeutics.com/role/PropertyandequipmentDetails": { "order": 1.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentNet", "weight": 1.0 } }, "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 and equipment" } } }, "localname": "PropertyPlantAndEquipmentGross", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentNet": { "auth_ref": [ "r67", "r117", "r400", "r457" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://c4therapeutics.com/role/PropertyandequipmentDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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 and equipment, net", "totalLabel": "Total property and equipment, net" } } }, "localname": "PropertyPlantAndEquipmentNet", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets", "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentTextBlock": { "auth_ref": [ "r67" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of 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 Text Block]", "terseLabel": "Summary of property and equipment" } } }, "localname": "PropertyPlantAndEquipmentTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentTypeDomain": { "auth_ref": [ "r65" ], "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": "Long-Lived Tangible Asset" } } }, "localname": "PropertyPlantAndEquipmentTypeDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ReceivablesNetCurrent": { "auth_ref": [ "r116", "r120", "r457" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.", "label": "Receivables, Net, Current", "verboseLabel": "Accounts Receivable" } } }, "localname": "ReceivablesNetCurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RepaymentsOfRelatedPartyDebt": { "auth_ref": [ "r35" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow for the payment of a long-term borrowing made from a related party 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. Alternate caption: Payments for Advances from Affiliates.", "label": "Repayments of Related Party Debt", "negatedTerseLabel": "Payment of long-term debt \u2212 related party" } } }, "localname": "RepaymentsOfRelatedPartyDebt", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis": { "auth_ref": [ "r87", "r88" ], "lang": { "en-us": { "role": { "documentation": "Information by form of arrangement related to research and development.", "label": "Research and Development Arrangement, Contract to Perform for Others, Type [Axis]", "terseLabel": "Research and Development Arrangement, Contract to Perform for Others, Type" } } }, "localname": "ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersTypeDomain": { "auth_ref": [ "r87", "r88" ], "lang": { "en-us": { "role": { "documentation": "Listing of significant agreements under research and development arrangements accounted for as a contract to perform research and development for others.", "label": "Research and Development Arrangement, Contract to Perform for Others, Type [Domain]", "terseLabel": "Research and Development Arrangement, Contract to Perform for Others, Type" } } }, "localname": "ResearchAndDevelopmentArrangementContractToPerformForOthersTypeDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ResearchAndDevelopmentExpense": { "auth_ref": [ "r86", "r122", "r509" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_OperatingExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.", "label": "Research and Development Expense", "terseLabel": "Research and development" } } }, "localname": "ResearchAndDevelopmentExpense", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_ResearchAndDevelopmentExpenseMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption in which the reported facts about research and development expense have been included.", "label": "Research and Development Expense [Member]", "terseLabel": "Research and development" } } }, "localname": "ResearchAndDevelopmentExpenseMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationScheduleofstockbasedcompensationexpenseDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestrictedCashAndCashEquivalents": { "auth_ref": [ "r43", "r47", "r99", "r113", "r128" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash and cash equivalents restricted as to withdrawal or usage. 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": "Restricted Cash and Cash Equivalents", "negatedLabel": "Less: restricted cash" } } }, "localname": "RestrictedCashAndCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember": { "auth_ref": [ "r128" ], "lang": { "en-us": { "role": { "documentation": "Type of cash and cash equivalent. Cash is 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 [Domain]", "terseLabel": "Cash and Cash Equivalents [Domain]" } } }, "localname": "RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestrictedCashAndCashEquivalentsNoncurrent": { "auth_ref": [ "r43", "r47", "r426" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. 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": "Restricted Cash and Cash Equivalents, Noncurrent", "terseLabel": "Restricted cash" } } }, "localname": "RestrictedCashAndCashEquivalentsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestrictedStockUnitsRSUMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.", "label": "Restricted Stock Units (RSUs) [Member]", "terseLabel": "Time-based RSUs" } } }, "localname": "RestrictedStockUnitsRSUMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails", "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r7", "r78", "r114", "r408", "r410", "r457" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "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)", "negatedTerseLabel": "Accumulated deficit", "terseLabel": "Accumulated deficit" } } }, "localname": "RetainedEarningsAccumulatedDeficit", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets", "http://c4therapeutics.com/role/NatureofthebusinessandbasisofpresentationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsMember": { "auth_ref": [ "r124", "r155", "r156", "r157", "r159", "r165", "r167", "r209", "r323", "r324", "r325", "r327", "r328", "r340", "r405", "r407" ], "lang": { "en-us": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings [Member]", "terseLabel": "Accumulated Deficit" } } }, "localname": "RetainedEarningsMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "domainItemType" }, "us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax": { "auth_ref": [ "r185", "r186", "r188", "r191", "r192", "r196", "r197", "r198", "r276", "r277", "r396" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_OperatingIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, excluding 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, Excluding Assessed Tax", "terseLabel": "Revenue from collaboration agreements" } } }, "localname": "RevenueFromContractWithCustomerExcludingAssessedTax", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails", "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenueFromContractWithCustomerProductAndServiceExtensibleList": { "auth_ref": [ "r448" ], "lang": { "en-us": { "role": { "documentation": "Indicates product and service for revenue from satisfaction of performance obligation by transferring promised product and service to customer.", "label": "Revenue from Contract with Customer, Product and Service [Extensible Enumeration]", "terseLabel": "Revenue from Contract with Customer, Product and Service [Extensible Enumeration]" } } }, "localname": "RevenueFromContractWithCustomerProductAndServiceExtensibleList", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "enumerationSetItemType" }, "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": { "auth_ref": [ "r362", "r456" ], "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 liabilities arising from obtaining right-of-use assets" } } }, "localname": "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of accrued liabilities.", "label": "Schedule of Accrued Liabilities [Table Text Block]", "terseLabel": "Summary of accrued liabilities" } } }, "localname": "ScheduleOfAccruedLiabilitiesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/AccruedexpensesandothercurrentliabilitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable": { "auth_ref": [ "r49" ], "lang": { "en-us": { "role": { "documentation": "Schedule for securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by Antidilutive Securities.", "label": "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]", "terseLabel": "Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]" } } }, "localname": "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareScheduleofdilutednetlosspershareattributabletocommonstockholdersDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock": { "auth_ref": [ "r49" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.", "label": "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]", "terseLabel": "Schedule of diluted net loss per share attributable to common stockholders" } } }, "localname": "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems": { "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 Securities, Available-for-Sale [Line Items]", "terseLabel": "Schedule Of Available For Sale Securities [Line Items]" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesLineItems", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesTable": { "auth_ref": [ "r57", "r58", "r59", "r60", "r61", "r62", "r106", "r107" ], "lang": { "en-us": { "role": { "documentation": "Schedule of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.", "label": "Schedule of Available-for-Sale Securities [Table]", "terseLabel": "Schedule Of Available For Sale Securities [Table]" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesTable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable": { "auth_ref": [ "r497" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.", "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Table]", "terseLabel": "Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table]" } } }, "localname": "ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsSummaryofallocationoftransactionpriceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfDebtInstrumentsTextBlock": { "auth_ref": [ "r18", "r74", "r75", "r76", "r77", "r94", "r95", "r97", "r109", "r443", "r445", "r476" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": { "auth_ref": [ "r480" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.", "label": "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]", "terseLabel": "Schedule of basic and diluted loss per share" } } }, "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable": { "auth_ref": [ "r81", "r83" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about amount recognized for award under share-based payment arrangement. Includes, but is not limited to, amount expensed in statement of income or comprehensive income, amount capitalized in statement of financial position, and corresponding reporting line item in financial statements.", "label": "Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]", "terseLabel": "Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table]" } } }, "localname": "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationScheduleofstockbasedcompensationexpenseDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock": { "auth_ref": [ "r81" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.", "label": "Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]", "terseLabel": "Schedule of stock-based compensation expense" } } }, "localname": "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": { "auth_ref": [ "r343", "r344" ], "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": "Schedule of financial assets measured at fair value on a recurring basis" } } }, "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock": { "auth_ref": [ "r70" ], "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": "Summary of future minimum payments" } } }, "localname": "ScheduleOfMaturitiesOfLongTermDebtTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfPropertyPlantAndEquipmentTable": { "auth_ref": [ "r67" ], "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": "Schedule Of Property Plant And Equipment [Table]" } } }, "localname": "ScheduleOfPropertyPlantAndEquipmentTable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/PropertyandequipmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": { "auth_ref": [ "r288", "r290", "r292", "r293", "r294", "r295", "r296", "r297", "r298", "r299", "r300", "r301", "r302", "r303", "r304", "r305", "r306", "r307", "r308", "r309", "r310", "r311", "r312", "r313", "r314", "r315", "r316", "r317" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about share-based payment arrangement.", "label": "Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]", "terseLabel": "Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]" } } }, "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails", "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock": { "auth_ref": [ "r79" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.", "label": "Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]", "terseLabel": "Summary of RSU activity" } } }, "localname": "ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ShareBasedCompensation": { "auth_ref": [ "r40" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of noncash expense for share-based payment arrangement.", "label": "Share-Based Payment Arrangement, Noncash Expense", "terseLabel": "Stock-based compensation expense" } } }, "localname": "ShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod": { "auth_ref": [ "r308" ], "lang": { "en-us": { "role": { "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period", "negatedTerseLabel": "Forfeited (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue": { "auth_ref": [ "r308" ], "lang": { "en-us": { "role": { "documentation": "Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value", "terseLabel": "Forfeited (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": { "auth_ref": [ "r306" ], "lang": { "en-us": { "role": { "documentation": "The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period", "terseLabel": "Granted (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r306" ], "lang": { "en-us": { "role": { "documentation": "The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value", "terseLabel": "Granted (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": { "auth_ref": [ "r303", "r304" ], "lang": { "en-us": { "role": { "documentation": "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number", "periodEndLabel": "Outstanding, ending balance (in shares)", "periodStartLabel": "Outstanding, beginning balance (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward": { "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": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]", "terseLabel": "Shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue": { "auth_ref": [ "r303", "r304" ], "lang": { "en-us": { "role": { "documentation": "Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value", "periodEndLabel": "Outstanding, ending balance (in dollars per share)", "periodStartLabel": "Outstanding, beginning balance (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]", "terseLabel": "Weighted-Average Grant Date Fair Value" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": { "auth_ref": [ "r307" ], "lang": { "en-us": { "role": { "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period", "negatedTerseLabel": "Vested (in shares)", "terseLabel": "Units vested (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails", "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r307" ], "lang": { "en-us": { "role": { "documentation": "The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value", "terseLabel": "Vested (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": { "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": "Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]", "terseLabel": "Share Based Compensation Arrangement By Share Based Payment Award [Line Items]" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails", "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross": { "auth_ref": [ "r299" ], "lang": { "en-us": { "role": { "documentation": "Gross number of share options (or share units) granted during the period.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross", "verboseLabel": "Stock options granted (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r309" ], "lang": { "en-us": { "role": { "documentation": "The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value", "terseLabel": "Stock options granted, weighted average grant date fair value (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": { "auth_ref": [ "r292", "r293", "r294", "r295", "r296", "r297", "r298", "r299", "r300", "r301", "r302", "r303", "r304", "r305", "r306", "r307", "r308", "r309", "r310", "r311", "r312", "r313", "r314", "r315", "r316", "r317" ], "lang": { "en-us": { "role": { "documentation": "Award under share-based payment arrangement.", "label": "Award Type [Domain]", "terseLabel": "Award Type" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails", "http://c4therapeutics.com/role/StockbasedcompensationSummaryofRSUactivityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice": { "auth_ref": [ "r299" ], "lang": { "en-us": { "role": { "documentation": "Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.", "label": "Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price", "verboseLabel": "Stock options granted, weighted average exercise price (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_SharesOutstanding": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of shares issued which are neither cancelled nor held in the treasury.", "label": "Shares, Outstanding", "periodEndLabel": "Ending balance (in shares)", "periodStartLabel": "Beginning balance (in shares)" } } }, "localname": "SharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "sharesItemType" }, "us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.", "label": "Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation", "terseLabel": "Number of shares retained to cover statutory minimum withholding taxes" } } }, "localname": "SharesPaidForTaxWithholdingForShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/StockbasedcompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_SignificantAccountingPoliciesTextBlock": { "auth_ref": [ "r48", "r151" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for all significant accounting policies of the reporting entity.", "label": "Significant Accounting Policies [Text Block]", "terseLabel": "Summary of significant accounting policies" } } }, "localname": "SignificantAccountingPoliciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/Summaryofsignificantaccountingpolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r20", "r73", "r124", "r141", "r142", "r143", "r155", "r156", "r157", "r159", "r165", "r167", "r180", "r209", "r272", "r323", "r324", "r325", "r327", "r328", "r340", "r351", "r352", "r353", "r354", "r355", "r356", "r364", "r405", "r406", "r407" ], "lang": { "en-us": { "role": { "documentation": "Information by component of equity.", "label": "Equity Components [Axis]", "terseLabel": "Equity Components" } } }, "localname": "StatementEquityComponentsAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "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/2022", "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/2022", "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/2022", "xbrltype": "stringItemType" }, "us-gaap_StatementTable": { "auth_ref": [ "r155", "r156", "r157", "r180", "r396" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "stringItemType" }, "us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans": { "auth_ref": [ "r4", "r5", "r73", "r78" ], "lang": { "en-us": { "role": { "documentation": "Number of shares issued during the period as a result of an employee stock purchase plan.", "label": "Stock Issued During Period, Shares, Employee Stock Purchase Plans", "terseLabel": "Issuances of common stock under 2020 ESPP (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation": { "auth_ref": [ "r4", "r5", "r73", "r78" ], "lang": { "en-us": { "role": { "documentation": "Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).", "label": "Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture", "terseLabel": "Issuance of common stock upon vesting of restricted stock units, net of shares repurchased for tax withholding (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised": { "auth_ref": [ "r4", "r5", "r73", "r78", "r300" ], "lang": { "en-us": { "role": { "documentation": "Number of share options (or share units) exercised during the current period.", "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period", "terseLabel": "Issuance of common stock upon exercise of stock options (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan": { "auth_ref": [ "r4", "r5", "r73", "r78" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.", "label": "Stock Issued During Period, Value, Employee Stock Purchase Plan", "terseLabel": "Issuance of common stock under 2020 ESPP" } } }, "localname": "StockIssuedDuringPeriodValueEmployeeStockPurchasePlan", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation": { "auth_ref": [ "r4", "r5", "r78", "r80" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).", "label": "Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture", "terseLabel": "Issuance of common stock upon vesting of restricted stock units, net of shares repurchased for tax withholding" } } }, "localname": "StockIssuedDuringPeriodValueShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised": { "auth_ref": [ "r20", "r73", "r78" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Value of stock issued as a result of the exercise of stock options.", "label": "Stock Issued During Period, Value, Stock Options Exercised", "terseLabel": "Issuance of common stock upon exercise of stock options" } } }, "localname": "StockIssuedDuringPeriodValueStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r5", "r8", "r9", "r53", "r457", "r475", "r484", "r499" ], "calculation": { "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets": { "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": "Ending balance", "periodStartLabel": "Beginning balance", "totalLabel": "Total stockholders\u2019 equity" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets", "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Stockholders' Equity Attributable to Parent [Abstract]", "terseLabel": "Stockholders\u2019 equity:" } } }, "localname": "StockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_SupplementalCashFlowInformationAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Supplemental Cash Flow Information [Abstract]", "terseLabel": "Supplemental disclosures of cash flow information:" } } }, "localname": "SupplementalCashFlowInformationAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": { "auth_ref": [ "r201", "r202", "r265", "r271", "r339", "r365", "r366", "r367", "r368", "r369", "r370", "r371", "r372", "r373", "r374", "r375", "r376", "r377", "r378", "r379", "r380", "r381", "r382", "r383", "r384", "r385", "r386", "r387", "r388", "r389", "r390", "r391", "r392", "r393", "r394", "r481", "r482", "r483", "r513", "r514", "r515", "r516", "r517", "r518", "r519" ], "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" } } }, "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TypeOfArrangementAxis": { "auth_ref": [ "r497" ], "lang": { "en-us": { "role": { "documentation": "Information by collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.", "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Axis]", "terseLabel": "Collaborative Arrangement and Arrangement Other than Collaborative" } } }, "localname": "TypeOfArrangementAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CollaborationandlicenseagreementsNarrativeDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleoffinancialinformationrelatedtocollaborationandlicenseagreementsDetails", "http://c4therapeutics.com/role/CollaborationandlicenseagreementsScheduleofrevenuefromcollaborationagreementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_USGovernmentAgenciesDebtSecuritiesMember": { "auth_ref": [ "r437", "r449", "r510" ], "lang": { "en-us": { "role": { "documentation": "Debentures, notes, and other debt securities issued by US government agencies, for example, but not limited to, Government National Mortgage Association (GNMA or Ginnie Mae). Excludes US treasury securities and debt issued by government-sponsored Enterprises (GSEs), for example, but is not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB).", "label": "US Government Agencies Debt Securities [Member]", "terseLabel": "U.S. government debt securities" } } }, "localname": "USGovernmentAgenciesDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USTreasurySecuritiesMember": { "auth_ref": [ "r437", "r449", "r451", "r510" ], "lang": { "en-us": { "role": { "documentation": "This category includes information about debt securities issued by the United States Department of the Treasury and backed by the United States government. Such securities primarily consist of treasury bills (short-term maturities - one year or less), treasury notes (intermediate term maturities - two to ten years), and treasury bonds (long-term maturities - ten to thirty years).", "label": "US Treasury Securities [Member]", "terseLabel": "U.S. Treasury securities" } } }, "localname": "USTreasurySecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/FairvaluemeasurementsDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesDetails", "http://c4therapeutics.com/role/MarketablesecuritiesSummaryofmarketablesecuritiesinunrealizedlosspositionDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UseOfEstimates": { "auth_ref": [ "r50", "r51", "r52", "r181", "r182", "r183", "r184" ], "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/2022", "presentation": [ "http://c4therapeutics.com/role/SummaryofsignificantaccountingpoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_VariableRateAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by type of variable rate.", "label": "Variable Rate [Axis]", "terseLabel": "Variable Rate [Axis]" } } }, "localname": "VariableRateAxis", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_VariableRateDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.", "label": "Variable Rate [Domain]", "terseLabel": "Variable Rate [Domain]" } } }, "localname": "VariableRateDomain", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LongtermdebtrelatedpartyNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": { "auth_ref": [ "r169", "r174" ], "lang": { "en-us": { "role": { "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.", "label": "Weighted Average Number of Shares Outstanding, Diluted", "terseLabel": "Weighted-average number of shares used in computed net loss per share \u2212 diluted" } } }, "localname": "WeightedAverageNumberOfDilutedSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "http://c4therapeutics.com/role/LosspershareScheduleofbasicanddilutedlosspershareDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Weighted Average Number of Shares Outstanding, Diluted [Abstract]", "terseLabel": "Denominator:" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingAbstract", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/LosspershareScheduleofbasicanddilutedlosspershareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": { "auth_ref": [ "r168", "r174" ], "lang": { "en-us": { "role": { "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.", "label": "Weighted Average Number of Shares Outstanding, Basic", "terseLabel": "Weighted-average number of shares used in computed net loss per share \u2212 basic" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasic", "nsuri": "http://fasb.org/us-gaap/2022", "presentation": [ "http://c4therapeutics.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "http://c4therapeutics.com/role/LosspershareScheduleofbasicanddilutedlosspershareDetails" ], "xbrltype": "sharesItemType" } }, "unitCount": 9 } }, "std_ref": { "r0": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "205", "URI": "https://asc.fasb.org/topic&trid=2122149", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r1": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(19))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r10": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(32))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r100": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(11))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r101": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(13))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r102": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(16))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r103": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(23))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r104": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.17)", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r105": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(22))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r106": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126980459&loc=d3e62557-112803", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126980459&loc=d3e62586-112803", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r108": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "320", "Topic": "942", "URI": "https://asc.fasb.org/subtopic&trid=2209399", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r11": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(a))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(16))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(12))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r112": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(16))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r113": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(2))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r114": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r115": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(25))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r116": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(5))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r117": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(8))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r118": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.(a),19)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(18))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r12": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(b),22(b))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r120": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.6-06(3))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=120401414&loc=d3e604059-122996", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r121": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "320", "Topic": "946", "URI": "https://asc.fasb.org/subtopic&trid=2324412", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r122": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "985", "URI": "https://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r123": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "910", "URI": "https://asc.fasb.org/extlink&oid=126937589&loc=SL119991585-234733", "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "105", "URI": "https://asc.fasb.org/extlink&oid=126987489&loc=SL124442142-165695", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "https://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r126": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r127": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=124098289&loc=d3e6904-107765", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r128": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(1))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(13))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r13": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19,20)", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(14))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(17))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(18))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r133": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(22))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r134": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(3)(c)(3))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(4))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r136": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(9))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r137": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=SL7669619-108580", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r138": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=SL7669619-108580", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r139": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=SL7669625-108580", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r14": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19-26)", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r140": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=SL7669625-108580", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=124431353&loc=SL124442407-227067", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r142": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r143": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=124431353&loc=SL124452729-227067", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(24))", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(25))", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3367-108585", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r147": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3000-108585", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r148": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3521-108585", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r149": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3536-108585", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r15": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.20)", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r150": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126999549&loc=d3e4297-108586", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r151": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=126899994&loc=d3e18726-107790", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r152": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(c))", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r153": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(g)(1)(ii))", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r154": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-04(a))", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124436220&loc=d3e21914-107793", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124436220&loc=d3e21930-107793", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124436220&loc=d3e21711-107793", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(2)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(3)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r16": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.21)", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r160": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r161": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r163": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22595-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r164": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r166": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22658-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124431687&loc=d3e22663-107794", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=126958026&loc=d3e1448-109256", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r169": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=126958026&loc=d3e1505-109256", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r17": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22(a)(1))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=126958026&loc=d3e1252-109256", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=126958026&loc=SL5780133-109256", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=126958026&loc=SL5780133-109256", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=126958026&loc=d3e1337-109256", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r175": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r177": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=128363288&loc=d3e3842-109258", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r179": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "260", "URI": "https://asc.fasb.org/topic&trid=2144383", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r18": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22)", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r180": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "272", "URI": "https://asc.fasb.org/extlink&oid=125520817&loc=d3e70191-108054", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r181": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "275", "URI": "https://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r182": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "275", "URI": "https://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r183": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "https://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r184": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "https://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r185": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r188": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r189": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r19": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.25)", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r190": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r191": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r192": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r193": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r194": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r195": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r196": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "41", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "42", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r2": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(20))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r20": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29-31)", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "https://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r201": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=SL120269820-111563", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r203": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r204": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r205": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r206": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(3)", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "323", "URI": "https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r209": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r21": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r210": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124255953&loc=SL82919244-210447", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r211": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r212": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r214": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(1)", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r217": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(2)", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(3)", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r219": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r22": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r220": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r221": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922895-210455", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "360", "URI": "https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "420", "URI": "https://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r225": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "440", "URI": "https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "440", "URI": "https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r227": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "450", "URI": "https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r228": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "450", "URI": "https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r229": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Subparagraph": "(SAB Topic 5.Y.Q2)", "Topic": "450", "URI": "https://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r23": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=d3e681-108580", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Subparagraph": "(SAB Topic 5.Y.Q4)", "Topic": "450", "URI": "https://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r231": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(i))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r232": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii)(A))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iv))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(5))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r235": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(i))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r236": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(A))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r237": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(B))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r238": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iv))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r239": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(5))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r24": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r240": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r241": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r242": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r243": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r244": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(f)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r245": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r246": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r247": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(i)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r248": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r249": { "Name": "Accounting Standards Codification", "Paragraph": "1C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r25": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126968391&loc=d3e557-108580", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r250": { "Name": "Accounting Standards Codification", "Paragraph": "1C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r251": { "Name": "Accounting Standards Codification", "Paragraph": "1C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r252": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r253": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r254": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r255": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r256": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r257": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r258": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r259": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r26": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(20))", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r260": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r261": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r262": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r263": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r264": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r265": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r266": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r267": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r268": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r269": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r27": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(4))", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r270": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r271": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r272": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3-04)", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r273": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r274": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r275": { "Name": "Accounting Standards Codification", "Paragraph": "12A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126920106&loc=SL108322424-203045", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r276": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r277": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r278": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r279": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r28": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(7)(c))", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r280": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(i)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r281": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(01)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r282": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r283": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(A)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r284": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(B)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r285": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(C)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r286": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(03)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r287": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(d)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r288": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=126961718&loc=SL116886442-113899", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r289": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=126961718&loc=d3e4534-113899", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r29": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.4)", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r290": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=126961718&loc=d3e4549-113899", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r291": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r292": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r293": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r294": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(3)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r295": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(i)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r296": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(ii)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r297": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iii)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r298": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r299": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(01)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r3": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(22))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r30": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7)", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r300": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(02)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r301": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(03)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r302": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(04)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r303": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(i)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r304": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(ii)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r305": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r306": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(01)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r307": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(02)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r308": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(03)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r309": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(1)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r31": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.8)", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r310": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r311": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)(1)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r312": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)(2)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r313": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(i)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r314": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(ii)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r315": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(iii)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r316": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(iv)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r317": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(v)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r318": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)(i)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r319": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(2)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r32": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r320": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(2)(i)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r321": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r322": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(l)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r323": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128097895&loc=SL121327923-165333", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r324": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)(1)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128097895&loc=SL121327923-165333", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r325": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128097895&loc=SL121327923-165333", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r326": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "718", "URI": "https://asc.fasb.org/topic&trid=2228938", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r327": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "740", "URI": "https://asc.fasb.org/extlink&oid=126983759&loc=SL121830611-158277", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r328": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(3)", "Topic": "740", "URI": "https://asc.fasb.org/extlink&oid=126983759&loc=SL121830611-158277", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r329": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "808", "URI": "https://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r33": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r330": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "808", "URI": "https://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r331": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "808", "URI": "https://asc.fasb.org/topic&trid=5833765", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r332": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=126929396&loc=SL4569616-111683", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r333": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r334": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r335": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r336": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r337": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r338": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r339": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(f)", "Topic": "815", "URI": "https://asc.fasb.org/extlink&oid=126731327&loc=d3e90205-114008", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r34": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r340": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(3)", "Topic": "815", "URI": "https://asc.fasb.org/extlink&oid=126732423&loc=SL123482106-238011", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r341": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(4)", "Topic": "815", "URI": "https://asc.fasb.org/extlink&oid=126732423&loc=SL123482106-238011", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r342": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)", "Topic": "815", "URI": "https://asc.fasb.org/extlink&oid=126732423&loc=SL123482106-238011", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r343": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r344": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r345": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(1)", "Topic": "820", "URI": "https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r346": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(2)", "Topic": "820", "URI": "https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r347": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r348": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r349": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r35": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r350": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "825", "URI": "https://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r351": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "830", "URI": "https://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r352": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "830", "URI": "https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r353": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "830", "URI": "https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r354": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "830", "URI": "https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r355": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "830", "URI": "https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r356": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "830", "URI": "https://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r357": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "835", "URI": "https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r358": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "842", "URI": "https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r359": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r36": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r360": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "842", "URI": "https://asc.fasb.org/extlink&oid=123391704&loc=SL77918643-209977", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r361": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(1)", "Topic": "842", "URI": "https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r362": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(2)", "Topic": "842", "URI": "https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r363": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "20", "Topic": "842", "URI": "https://asc.fasb.org/subtopic&trid=77888251", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r364": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)(3)(iii)(03)", "Topic": "848", "URI": "https://asc.fasb.org/extlink&oid=125980421&loc=SL125981372-237846", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r365": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(i)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r366": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(ii)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r367": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r368": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(1)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r369": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(2)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r37": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3521-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r370": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r371": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(1)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r372": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r373": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r374": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r375": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r376": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r377": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r378": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r379": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r38": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3536-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r380": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r381": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r382": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r383": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(4)(i)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r384": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r385": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r386": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r387": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(4)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r388": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(5)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r389": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(6)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r39": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3536-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r390": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(7)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r391": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(b)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r392": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(1)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r393": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(2)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r394": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=128311188&loc=d3e122739-111746", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r395": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "910", "URI": "https://asc.fasb.org/extlink&oid=126937589&loc=SL119991595-234733", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r396": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 11.L)", "Topic": "924", "URI": "https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r397": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(26))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r398": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(27))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r399": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.9-05(b)(2))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r4": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(28))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r40": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r400": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=124429447&loc=SL124453093-239630", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r401": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(3))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r402": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(22))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r403": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(23))", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r404": { "Name": "Accounting Standards Codification", "Paragraph": "7A", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(d)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=124506351&loc=SL117782755-158439", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r405": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r406": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(1)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r407": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(2)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r408": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(i)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r409": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(ii)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r41": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r410": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(h)(2)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r411": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 1))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r412": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 6))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r413": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 7))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r414": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 1))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r415": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 6))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r416": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 7))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r417": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 1))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r418": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 6))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r419": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 7))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r42": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r420": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13D(Column B)(Footnote 2))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r421": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13D(Column C)(Footnote 2))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r422": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column A))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r423": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column B))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r424": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column C))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r425": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column D))", "Topic": "946", "URI": "https://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r426": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "210", "Topic": "954", "URI": "https://asc.fasb.org/extlink&oid=120413173&loc=SL116631458-115580", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r427": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "440", "Subparagraph": "(a)", "Topic": "954", "URI": "https://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r428": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Subparagraph": "(d)", "Topic": "958", "URI": "https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r429": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Topic": "958", "URI": "https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r43": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3044-108585", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r430": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Topic": "958", "URI": "https://asc.fasb.org/extlink&oid=126982197&loc=SL120174063-112916", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r431": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Subparagraph": "(c)", "Topic": "976", "URI": "https://asc.fasb.org/extlink&oid=6497875&loc=d3e22274-108663", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r432": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Subparagraph": "(b)", "Topic": "978", "URI": "https://asc.fasb.org/extlink&oid=126945304&loc=d3e27327-108691", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r433": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1403", "role": "http://www.xbrl.org/2003/role/disclosureRef" }, "r434": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r435": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r436": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=126899994&loc=d3e18823-107790", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r437": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(m)(1)(ii)(A))", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r438": { "Name": "Accounting Standards Codification", "Paragraph": "52", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=128363288&loc=d3e4984-109258", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r439": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r44": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r440": { "Name": "Accounting Standards Codification", "Paragraph": "31", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "https://asc.fasb.org/extlink&oid=126901519&loc=d3e8924-108599", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r441": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r442": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r443": { "Name": "Accounting Standards Codification", "Paragraph": "69B", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r444": { "Name": "Accounting Standards Codification", "Paragraph": "69C", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r445": { "Name": "Accounting Standards Codification", "Paragraph": "69E", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r446": { "Name": "Accounting Standards Codification", "Paragraph": "69F", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r447": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r448": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126920602&loc=SL49130690-203046-203046", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r449": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r45": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r450": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(01)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r451": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r452": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "80", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r453": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r454": { "Name": "Accounting Standards Codification", "Paragraph": "4J", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=120409616&loc=SL4591551-111686", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r455": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=120409616&loc=SL4591552-111686", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r456": { "Name": "Accounting Standards Codification", "Paragraph": "53", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "842", "URI": "https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r457": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "852", "URI": "https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r458": { "Name": "Accounting Standards Codification", "Paragraph": "13H", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126561865&loc=SL117783719-158441", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r459": { "Name": "Accounting Standards Codification", "Paragraph": "29F", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=126561865&loc=SL117819544-158441", "role": "http://www.xbrl.org/2003/role/exampleRef" }, "r46": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r460": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b", "role": "http://www.xbrl.org/2003/role/presentationRef" }, "r461": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2", "role": "http://www.xbrl.org/2003/role/presentationRef" }, "r462": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "d1-1", "role": "http://www.xbrl.org/2003/role/presentationRef" }, "r463": { "Name": "Form 10-Q", "Number": "240", "Publisher": "SEC", "Section": "308", "Subsection": "a", "role": "http://www.xbrl.org/2003/role/presentationRef" }, "r464": { "Name": "Forms 10-K, 10-Q, 20-F", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-1", "role": "http://www.xbrl.org/2003/role/presentationRef" }, "r465": { "Name": "Regulation S-T", "Number": "232", "Publisher": "SEC", "Section": "405", "role": "http://www.xbrl.org/2003/role/presentationRef" }, "r466": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(9))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r467": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=124431353&loc=SL124442407-227067", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r468": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r469": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "https://asc.fasb.org/extlink&oid=124431353&loc=SL124452729-227067", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r47": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126999549&loc=SL98516268-108586", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r470": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r471": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r472": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r473": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r474": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(f))", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r475": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(g)(1)(ii))", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r476": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-04(a))", "Topic": "235", "URI": "https://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r477": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124436220&loc=d3e21914-107793", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r478": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124436220&loc=d3e21930-107793", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r479": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "https://asc.fasb.org/extlink&oid=124436220&loc=d3e21711-107793", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r48": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "235", "URI": "https://asc.fasb.org/topic&trid=2122369", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r480": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r481": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "321", "URI": "https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r482": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "321", "URI": "https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r483": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "321", "URI": "https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r484": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "323", "URI": "https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r485": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r486": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(3)", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r487": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r488": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "410", "URI": "https://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r489": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "450", "URI": "https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r490": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Subparagraph": "(SAB Topic 5.Y.Q2)", "Topic": "450", "URI": "https://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r491": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "450", "URI": "https://asc.fasb.org/topic&trid=2127136", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r492": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(ii))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r493": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii))", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r494": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r495": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r496": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r497": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "808", "URI": "https://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r498": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(3)", "Topic": "815", "URI": "https://asc.fasb.org/extlink&oid=126732423&loc=SL123482106-238011", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r499": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "825", "URI": "https://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r5": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(29))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r50": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "https://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r500": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(1)", "Topic": "842", "URI": "https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r501": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "852", "URI": "https://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r502": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "852", "URI": "https://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r503": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(1)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r504": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r505": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r506": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r507": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r508": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r509": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "730", "Topic": "912", "URI": "https://asc.fasb.org/extlink&oid=6472174&loc=d3e58812-109433", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "https://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r510": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126980459&loc=d3e62557-112803", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r511": { "Name": "Accounting Standards Codification", "Paragraph": "4H", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r512": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(e)", "Topic": "944", "URI": "https://asc.fasb.org/extlink&oid=124508989&loc=d3e19393-158473", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r513": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(a)", "Publisher": "SEC", "Section": "1402", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r514": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(1)", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r515": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r516": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(3)", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r517": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(i)", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r518": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(ii)", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r519": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(iii)", "role": "http://www.xbrl.org/2009/role/commonPracticeRef" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "https://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 4.E)", "Topic": "310", "URI": "https://asc.fasb.org/extlink&oid=122038336&loc=d3e74512-122707", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r57": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r58": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r59": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r6": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(1))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r60": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r61": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27340-111563", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r62": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)-(d)", "Topic": "320", "URI": "https://asc.fasb.org/extlink&oid=126970911&loc=d3e27357-111563", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r63": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "320", "URI": "https://asc.fasb.org/topic&trid=2196928", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r64": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "360", "URI": "https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r65": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "360", "URI": "https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "360", "URI": "https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r68": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "360", "URI": "https://asc.fasb.org/topic&trid=2155823", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r69": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "440", "URI": "https://asc.fasb.org/topic&trid=2144648", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r7": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(3))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r70": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r71": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "https://asc.fasb.org/extlink&oid=123465755&loc=SL6230698-112601", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r72": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "470", "URI": "https://asc.fasb.org/topic&trid=2208564", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r74": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=126973232&loc=d3e21506-112644", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=126973232&loc=d3e21521-112644", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=126973232&loc=d3e21538-112644", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3-04)", "Topic": "505", "URI": "https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r8": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(1)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "2A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=128089324&loc=SL79508275-113901", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 14.F)", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=126964447&loc=d3e11149-113907", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r85": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "https://asc.fasb.org/extlink&oid=126964447&loc=d3e11178-113907", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r86": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "730", "URI": "https://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "730", "URI": "https://asc.fasb.org/extlink&oid=6420387&loc=d3e23199-108380", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "730", "URI": "https://asc.fasb.org/extlink&oid=6420387&loc=d3e23221-108380", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r9": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(31))", "Topic": "210", "URI": "https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c),(3)", "Topic": "810", "URI": "https://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r91": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "810", "URI": "https://asc.fasb.org/topic&trid=2197479", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r92": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Topic": "830", "URI": "https://asc.fasb.org/extlink&oid=123444420&loc=d3e33268-110906", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "https://asc.fasb.org/extlink&oid=124435984&loc=d3e28541-108399", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r95": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r96": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "https://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r97": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "835", "URI": "https://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r98": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "320", "Topic": "940", "URI": "https://asc.fasb.org/subtopic&trid=2176304", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" }, "r99": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(1)(a))", "Topic": "942", "URI": "https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878", "role": "http://fasb.org/us-gaap/role/ref/legacyRef" } }, "version": "2.2" }