{ "instance": { "d276747d497.htm": { "axisCustom": 0, "axisStandard": 2, "contextCount": 7, "dts": { "calculationLink": { "local": [ "nifi-20210528_cal.xml" ] }, "definitionLink": { "local": [ "nifi-20210528_def.xml" ] }, "inline": { "local": [ "d276747d497.htm" ] }, "labelLink": { "local": [ "nifi-20210528_lab.xml" ], "remote": [ "https://xbrl.sec.gov/dei/2020/dei-doc-2020-01-31.xml", "https://xbrl.sec.gov/rr/2018/rr-doc-2018-01-31.xml" ] }, "presentationLink": { "local": [ "nifi-20210528_pre.xml" ] }, "referenceLink": { "remote": [ "https://xbrl.sec.gov/dei/2020/dei-ref-2020-01-31.xml", "https://xbrl.sec.gov/rr/2018/rr-ref-2018-01-31.xml" ] }, "schema": { "local": [ "nifi-20210528.xsd" ], "remote": [ "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", "https://xbrl.sec.gov/rr/2018/rr-2018-01-31.xsd", "http://www.xbrl.org/2005/xbrldt-2005.xsd", "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd", "http://www.xbrl.org/2006/xbrldi-2006.xsd", "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd", "http://www.xbrl.org/2006/ref-2006-02-27.xsd", "https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd", "http://www.xbrl.org/dtr/type/numeric-2009-12-16.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/deprecated-2009-12-16.xsd" ] } }, "elementCount": 57, "entityCount": 1, "hidden": { "http://xbrl.sec.gov/dei/2020-01-31": 7, "total": 7 }, "keyCustom": 0, "keyStandard": 120, "memberCustom": 6, "memberStandard": 0, "nsprefix": "nifi", "nsuri": "http://www.nuveen.com/20210528", "report": { "R1": { "firstAnchor": { "ancestors": [ "div", "div", "rr:SupplementToProspectusTextBlock", "rr:SupplementToProspectusTextBlock", "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentCreationDate", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "false", "longName": "0001 - Document - Document and Entity Information {Elements}", "role": "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "shortName": "Document and Entity Information", "subGroupType": "", "uniqueAnchor": null }, "R2": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021", "decimals": null, "first": true, "lang": "en-US", "name": "rr:SupplementToProspectusTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "false", "longName": "0002 - Document - Risk/Return Summary {Unlabeled} - Nuveen Real Estate Securities Fund", "role": "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund", "shortName": "Risk/Return Summary- Nuveen Real Estate Securities Fund", "subGroupType": "", "uniqueAnchor": null }, "R3": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021", "decimals": null, "first": true, "lang": "en-US", "name": "rr:SupplementToProspectusTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "0003 - Disclosure - Risk/Return Detail Data {Elements} - Nuveen Real Estate Securities Fund", "role": "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "shortName": "Risk/Return Detail Data- Nuveen Real Estate Securities Fund", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "rr:SupplementToProspectusTextBlock", "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021_S000005563MemberdeiLegalEntityAxis", "decimals": null, "lang": "en-US", "name": "rr:SupplementToProspectusTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "div", "div", "rr:SupplementToProspectusTextBlock", "rr:SupplementToProspectusTextBlock", "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021", "decimals": null, "first": true, "lang": "en-US", "name": "rr:ProspectusDate", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "040000 - Disclosure - Risk/Return Detail Data {Elements}", "role": "http://xbrl.sec.gov/rr/role/RiskReturnDetailData", "shortName": "Risk/Return Detail Data", "subGroupType": "", "uniqueAnchor": null }, "S1": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021", "decimals": null, "lang": "en-US", "name": "rr:SupplementToProspectusTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "RR_Summaries", "isDefault": "true", "longName": "000000102 - Disclosure - Document and Entity Information", "section": 0, "shortName": "Document and Entity Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021", "decimals": null, "lang": "en-US", "name": "rr:SupplementToProspectusTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" } }, "S2": { "firstAnchor": { "ancestors": [ "rr:SupplementToProspectusTextBlock", "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021_S000005563MemberdeiLegalEntityAxis", "decimals": null, "lang": "en-US", "name": "rr:SupplementToProspectusTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "RR_Summaries", "isDefault": "false", "longName": "000000103 - Disclosure - Nuveen Real Estate Securities Fund", "section": 1, "shortName": "Nuveen Real Estate Securities Fund", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "rr:SupplementToProspectusTextBlock", "div", "div", "div", "body", "html" ], "baseRef": "d276747d497.htm", "contextRef": "P04_30_2021To04_30_2021_S000005563MemberdeiLegalEntityAxis", "decimals": null, "lang": "en-US", "name": "rr:SupplementToProspectusTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" } } }, "segmentCount": 6, "tag": { "dei_AmendmentFlag": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.", "label": "Amendment Flag" } } }, "localname": "AmendmentFlag", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements" ], "xbrltype": "booleanItemType" }, "dei_DocumentCreationDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The date the document was made available and submitted, in YYYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.", "label": "Document Creation Date" } } }, "localname": "DocumentCreationDate", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://xbrl.sec.gov/rr/role/RiskReturnDetailData" ], "xbrltype": "dateItemType" }, "dei_DocumentDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Type of the document as assigned by the filer, corresponding to SEC document naming convention standards.", "label": "Prospectus" } } }, "localname": "DocumentDomain", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "dei_DocumentEffectiveDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The date when a document, upon receipt and acceptance, becomes officially effective, in YYYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.", "label": "Document Effective Date" } } }, "localname": "DocumentEffectiveDate", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements" ], "xbrltype": "dateItemType" }, "dei_DocumentInformationDocumentAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.", "label": "Document [Axis]" } } }, "localname": "DocumentInformationDocumentAxis", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "dei_DocumentPeriodEndDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.", "label": "Document Period End Date" } } }, "localname": "DocumentPeriodEndDate", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements" ], "xbrltype": "dateItemType" }, "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" } } }, "localname": "DocumentType", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements" ], "xbrltype": "submissionTypeItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r18" ], "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" } } }, "localname": "EntityCentralIndexKey", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements" ], "xbrltype": "centralIndexKeyItemType" }, "dei_EntityDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains.", "label": "Series" } } }, "localname": "EntityDomain", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "dei_EntityInvCompanyType": { "auth_ref": [ "r19" ], "lang": { "en-us": { "role": { "documentation": "One of: N-1A (Mutual Fund), N-1 (Open-End Separate Account with No Variable Annuities), N-2 (Closed-End Investment Company), N-3 (Separate Account Registered as Open-End Management Investment Company), N-4 (Variable Annuity UIT Separate Account), N-5 (Small Business Investment Company), N-6 (Variable Life UIT Separate Account), S-1 or S-3 (Face Amount Certificate Company), S-6 (UIT, Non-Insurance Product).", "label": "Entity Inv Company Type" } } }, "localname": "EntityInvCompanyType", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements" ], "xbrltype": "invCompanyType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r18" ], "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": "Registrant Name" } } }, "localname": "EntityRegistrantName", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://xbrl.sec.gov/rr/role/RiskReturnDetailData" ], "xbrltype": "normalizedStringItemType" }, "dei_LegalEntityAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The set of legal entities associated with a report.", "label": "Series [Axis]" } } }, "localname": "LegalEntityAxis", "nsuri": "http://xbrl.sec.gov/dei/2020-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "nifi_C000015147Member": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "C000015147 [Member]", "terseLabel": "Class A" } } }, "localname": "C000015147Member", "nsuri": "http://www.nuveen.com/20210528", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "nifi_C000015149Member": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "C000015149 [Member]", "terseLabel": "Class C" } } }, "localname": "C000015149Member", "nsuri": "http://www.nuveen.com/20210528", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "nifi_C000015150Member": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "C000015150 [Member]", "terseLabel": "Class R3" } } }, "localname": "C000015150Member", "nsuri": "http://www.nuveen.com/20210528", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "nifi_C000015151Member": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "C000015151 [Member]", "terseLabel": "Class I" } } }, "localname": "C000015151Member", "nsuri": "http://www.nuveen.com/20210528", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "nifi_C000126484Member": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "C000126484 [Member]", "terseLabel": "Class R6" } } }, "localname": "C000126484Member", "nsuri": "http://www.nuveen.com/20210528", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "nifi_S000005563Member": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "S000005563 [Member]", "terseLabel": "Nuveen Real Estate Securities Fund" } } }, "localname": "S000005563Member", "nsuri": "http://www.nuveen.com/20210528", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "rr_AfterTaxesOnDistributionsAndSalesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Calculate the taxes due on any distributions by the Fund by applying the tax rates specified in Instruction 4 to each component of the distributions on the reinvestment date (e.g., ordinary income, short-term capital gain, long-term capital gain). The taxable amount and tax character of each distribution should be as specified by the Fund on the dividend declaration date, but may be adjusted to reflect subsequent recharacterizations of distributions. Distributions should be adjusted to reflect the federal tax impact the distribution would have on an individual taxpayer on the reinvestment date. For example, assume no taxes are due on the portion of any distribution that would not result in federal income tax on an individual, e.g., tax-exempt interest or non-taxable returns of capital. The effect of applicable tax credits, such as the foreign tax credit, should be taken into account in accordance with federal tax law.", "label": "After Taxes on Distributions and Sales" } } }, "localname": "AfterTaxesOnDistributionsAndSalesMember", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "rr_AfterTaxesOnDistributionsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Calculate the taxes due on any distributions by the Fund by applying the tax rates specified in Instruction 4 to each component of the distributions on the reinvestment date (e.g., ordinary income, short-term capital gain, long-term capital gain). The taxable amount and tax character of each distribution should be as specified by the Fund on the dividend declaration date, but may be adjusted to reflect subsequent recharacterizations of distributions. Distributions should be adjusted to reflect the federal tax impact the distribution would have on an individual taxpayer on the reinvestment date. For example, assume no taxes are due on the portion of any distribution that would not result in federal income tax on an individual, e.g., tax-exempt interest or non-taxable returns of capital. The effect of applicable tax credits, such as the foreign tax credit, should be taken into account in accordance with federal tax law.", "label": "After Taxes on Distributions" } } }, "localname": "AfterTaxesOnDistributionsMember", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "rr_AnnualFundOperatingExpensesTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.", "label": "Annual Fund Operating Expenses [Table]" } } }, "localname": "AnnualFundOperatingExpensesTableTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" }, "rr_BarChartTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contains a command for the SEC Viewer for the role corresponding to BarChartData.", "label": "Bar Chart [Table]" } } }, "localname": "BarChartTableTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" }, "rr_CoregistrantAxis": { "auth_ref": [ "r1" ], "lang": { "en-us": { "role": { "documentation": "The Coregistrant Axis may be used to distinguish disclosures that belong to registrants having different Central Index Key (CIK) values that nevertheless all present in the same filing.", "label": "Coregistrant [Axis]" } } }, "localname": "CoregistrantAxis", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_CoregistrantDomain": { "auth_ref": [ "r2" ], "lang": { "en-us": { "role": { "documentation": "The default member of the Coregistrant axis. It represents any disclosure that applies to the registrant whose Central Index Key (CIK) is that of the default context.", "label": "Coregistrant [Domain]" } } }, "localname": "CoregistrantDomain", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "rr_DistributionAndService12b1FeesOverAssets": { "auth_ref": [ "r17" ], "lang": { "en-us": { "role": { "documentation": "Distribution [and/or Service] (12b-1) Fees\" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of \"Other Expenses,\" disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.", "label": "Distribution and Service (12b-1) Fees", "terseLabel": "Distribution and/or Service (12b-1) Fees" } } }, "localname": "DistributionAndService12b1FeesOverAssets", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativePure4Type" }, "rr_ExpenseExampleHeading": { "auth_ref": [ "r13" ], "lang": { "en-us": { "role": { "documentation": "Heading for Expense Example.", "label": "Expense Example [Heading]" } } }, "localname": "ExpenseExampleHeading", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_ExpenseExampleNarrativeTextBlock": { "auth_ref": [ "r4" ], "lang": { "en-us": { "role": { "documentation": "The Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.", "label": "Expense Example Narrative [Text Block]" } } }, "localname": "ExpenseExampleNarrativeTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" }, "rr_ExpenseExampleNoRedemptionTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.", "label": "Expense Example, No Redemption [Table]" } } }, "localname": "ExpenseExampleNoRedemptionTableTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" }, "rr_ExpenseExampleNoRedemptionYear01": { "auth_ref": [ "r6" ], "lang": { "en-us": { "role": { "documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.", "label": "Expense Example, No Redemption, 1 Year", "terseLabel": "1 Year" } } }, "localname": "ExpenseExampleNoRedemptionYear01", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativeMonetaryType" }, "rr_ExpenseExampleNoRedemptionYear03": { "auth_ref": [ "r6" ], "lang": { "en-us": { "role": { "documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.", "label": "Expense Example, No Redemption, 3 Years", "terseLabel": "3 Years" } } }, "localname": "ExpenseExampleNoRedemptionYear03", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativeMonetaryType" }, "rr_ExpenseExampleNoRedemptionYear05": { "auth_ref": [ "r14" ], "lang": { "en-us": { "role": { "documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.", "label": "Expense Example, No Redemption, 5 Years", "terseLabel": "5 Years" } } }, "localname": "ExpenseExampleNoRedemptionYear05", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativeMonetaryType" }, "rr_ExpenseExampleNoRedemptionYear10": { "auth_ref": [ "r14" ], "lang": { "en-us": { "role": { "documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.", "label": "Expense Example, No Redemption, 10 Years", "terseLabel": "10 Years" } } }, "localname": "ExpenseExampleNoRedemptionYear10", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativeMonetaryType" }, "rr_ExpenseExampleWithRedemptionTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contains a command for the SEC Viewer for the role corresponding to ExpenseExample.", "label": "Expense Example, With Redemption [Table]" } } }, "localname": "ExpenseExampleWithRedemptionTableTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" }, "rr_ExpenseExampleYear01": { "auth_ref": [ "r13" ], "lang": { "en-us": { "role": { "documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.", "label": "Expense Example, with Redemption, 1 Year", "terseLabel": "1 Year" } } }, "localname": "ExpenseExampleYear01", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativeMonetaryType" }, "rr_ExpenseExampleYear03": { "auth_ref": [ "r5" ], "lang": { "en-us": { "role": { "documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.", "label": "Expense Example, with Redemption, 3 Years", "terseLabel": "3 Years" } } }, "localname": "ExpenseExampleYear03", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativeMonetaryType" }, "rr_ExpenseExampleYear05": { "auth_ref": [ "r5" ], "lang": { "en-us": { "role": { "documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.", "label": "Expense Example, with Redemption, 5 Years", "terseLabel": "5 Years" } } }, "localname": "ExpenseExampleYear05", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativeMonetaryType" }, "rr_ExpenseExampleYear10": { "auth_ref": [ "r5" ], "lang": { "en-us": { "role": { "documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.", "label": "Expense Example, with Redemption, 10 Years", "terseLabel": "10 Years" } } }, "localname": "ExpenseExampleYear10", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativeMonetaryType" }, "rr_ExpensesDeferredChargesTextBlock": { "auth_ref": [ "r7" ], "lang": { "en-us": { "role": { "documentation": "A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter).", "label": "Expenses Deferred Charges [Text Block]" } } }, "localname": "ExpensesDeferredChargesTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" }, "rr_ExpensesOverAssets": { "auth_ref": [ "r10" ], "lang": { "en-us": { "role": { "documentation": "Total Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of \"Annual Fund Operating Expenses\" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining \"Annual Fund Operating Expenses.\"", "label": "Expenses (as a percentage of Assets)", "terseLabel": "Total Annual Fund Operating Expenses" } } }, "localname": "ExpensesOverAssets", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativePure4Type" }, "rr_ExpensesRestatedToReflectCurrent": { "auth_ref": [ "r11" ], "lang": { "en-us": { "role": { "documentation": "In a footnote to the table, disclose that the expense information in the table has been restated to reflect current fees.", "label": "Expenses Restated to Reflect Current [Text]" } } }, "localname": "ExpensesRestatedToReflectCurrent", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_FeeWaiverOrReimbursementOverAssets": { "auth_ref": [ "r15" ], "lang": { "en-us": { "role": { "documentation": "Total Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the \"Total Annual Fund Operating Expenses\" caption of the table and should use appropriate descriptive captions, such as \"Fee Waiver [and/or Expense Reimbursement]\" and \"Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement],\" respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.", "label": "Fee Waiver or Reimbursement", "terseLabel": "Fee Waivers and/or Expense Reimbursements" } } }, "localname": "FeeWaiverOrReimbursementOverAssets", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonPositivePure4Type" }, "rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination": { "auth_ref": [ "r12" ], "lang": { "en-us": { "role": { "documentation": "This element represents the date of expected termination of any expense reimbursement or fee waiver arrangements that reduce any Fund operating expenses (SEC Form N-1A 2006-09-14 A.3.table.1.11 Total Annual Fund Operating Expenses A.3.instructions.3.e).", "label": "Fee Waiver or Reimbursement over Assets, Date of Termination" } } }, "localname": "FeeWaiverOrReimbursementOverAssetsDateOfTermination", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_ManagementFeesOverAssets": { "auth_ref": [ "r8" ], "lang": { "en-us": { "role": { "documentation": "Management Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as \"Other Expenses.\"", "label": "Management Fees (as a percentage of Assets)", "terseLabel": "Management Fees" } } }, "localname": "ManagementFeesOverAssets", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativePure4Type" }, "rr_NetExpensesOverAssets": { "auth_ref": [ "r15" ], "lang": { "en-us": { "role": { "documentation": "Total Annual Fund Operating Expenses.", "label": "Net Expenses (as a percentage of Assets)", "terseLabel": "Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements" } } }, "localname": "NetExpensesOverAssets", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativePure4Type" }, "rr_OperatingExpensesCaption": { "auth_ref": [ "r16" ], "lang": { "en-us": { "role": { "documentation": "Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)", "label": "Operating Expenses Caption [Text]" } } }, "localname": "OperatingExpensesCaption", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_OtherExpensesOverAssets": { "auth_ref": [ "r9" ], "lang": { "en-us": { "role": { "documentation": "\"Other Expenses\" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). \"Other Expenses\" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's \"Other Expenses,\" disclose in a footnote to the table what \"Other Expenses\" would have been had the extraordinary expenses been included.", "label": "Other Expenses (as a percentage of Assets):", "terseLabel": "Other Expenses" } } }, "localname": "OtherExpensesOverAssets", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund" ], "xbrltype": "NonNegativePure4Type" }, "rr_PerformanceMeasureAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The Performance Measure Axis has members that distinguish different returns according to whether they are Before Taxes (the default), After Taxes on Distributions, After Taxes on Distributions and Sales, or are a pre-tax measure of returns based on a broadly available market index.", "label": "Performance Measure [Axis]" } } }, "localname": "PerformanceMeasureAxis", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_PerformanceMeasureDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The default member of the Performance Measure axis. It represents any return that is measured before taxes.", "label": "Before Taxes" } } }, "localname": "PerformanceMeasureDomain", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "rr_PerformanceTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contains a command for the SEC Viewer for the role corresponding to PerformanceTableData.", "label": "Performance [Table]" } } }, "localname": "PerformanceTableTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" }, "rr_ProspectusDate": { "auth_ref": [ "r3" ], "lang": { "en-us": { "role": { "documentation": "The date of the prospectus.", "label": "Prospectus Date" } } }, "localname": "ProspectusDate", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://xbrl.sec.gov/rr/role/RiskReturnDetailData" ], "xbrltype": "dateItemType" }, "rr_ProspectusLineItems": { "auth_ref": [ "r1" ], "lang": { "en-us": { "role": { "label": "Prospectus [Line Items]" } } }, "localname": "ProspectusLineItems", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_ProspectusShareClassAxis": { "auth_ref": [ "r1" ], "lang": { "en-us": { "role": { "documentation": "Prospectus Share Class Axis.", "label": "Share Class [Axis]" } } }, "localname": "ProspectusShareClassAxis", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_ProspectusTable": { "auth_ref": [ "r1" ], "lang": { "en-us": { "role": { "documentation": "Prospectus Table.", "label": "Prospectus:" } } }, "localname": "ProspectusTable", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "xbrltype": "stringItemType" }, "rr_RiskReturnAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Risk/Return:" } } }, "localname": "RiskReturnAbstract", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "stringItemType" }, "rr_ShareClassDomain": { "auth_ref": [ "r2" ], "lang": { "en-us": { "role": { "documentation": "All members of this domain must be elements with name starting with \"C\" and consisting of a 9-digit Fund share class CIK.", "label": "Share Classes" } } }, "localname": "ShareClassDomain", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/DocumentAndEntityInformationElements", "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "domainItemType" }, "rr_ShareholderFeesTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.", "label": "Shareholder Fees [Table]" } } }, "localname": "ShareholderFeesTableTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" }, "rr_SupplementToProspectusTextBlock": { "auth_ref": [ "r0" ], "lang": { "en-us": { "role": { "documentation": "This element contains the text of a prospectus supplement (submission type 497) not already contained in an element containing amended text or other data from a previous submission.", "label": "Supplement to Prospectus [Text Block]" } } }, "localname": "SupplementToProspectusTextBlock", "nsuri": "http://xbrl.sec.gov/rr/2018-01-31", "presentation": [ "http://www.nuveen.com/role/RiskReturnDetailDataElementsNuveenRealEstateSecuritiesFund", "http://www.nuveen.com/role/RiskReturnSummaryUnlabeledNuveenRealEstateSecuritiesFund" ], "xbrltype": "textBlockItemType" } }, "unitCount": 2 } }, "std_ref": { "r0": { "Name": "Form", "Number": "N-1A", "Publisher": "SEC" }, "r1": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Publisher": "SEC" }, "r10": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "3", "Publisher": "SEC", "Section": "3", "Subparagraph": "d", "Subsection": "instructions" }, "r11": { "Chapter": "A", "Clause": "ii", "Exhibit": "B", "Name": "Form", "Number": "N-1A", "Paragraph": "3", "Publisher": "SEC", "Section": "3", "Subparagraph": "d", "Subsection": "instructions" }, "r12": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "3", "Publisher": "SEC", "Section": "3", "Subparagraph": "e", "Subsection": "instructions" }, "r13": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "4", "Publisher": "SEC", "Section": "3", "Subsection": "instructions" }, "r14": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "4", "Publisher": "SEC", "Section": "3", "Subparagraph": "f", "Subsection": "instructions" }, "r15": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "1", "Publisher": "SEC", "Section": "3", "Subparagraph": "11", "Subsection": "table" }, "r16": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "1", "Publisher": "SEC", "Section": "3", "Subparagraph": "7", "Subsection": "table" }, "r17": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "1", "Publisher": "SEC", "Section": "3", "Subparagraph": "9", "Subsection": "table" }, "r18": { "Name": "Regulation 12B", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2" }, "r19": { "Name": "Regulation S-T", "Number": "232", "Publisher": "SEC", "Section": "313" }, "r2": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "1", "Publisher": "SEC", "Section": "1", "Subsection": "a" }, "r3": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "3", "Publisher": "SEC", "Section": "1", "Subsection": "a" }, "r4": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "1", "Publisher": "SEC", "Section": "3", "Subparagraph": "1", "Subsection": "example" }, "r5": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "1", "Publisher": "SEC", "Section": "3", "Subparagraph": "2", "Subsection": "example" }, "r6": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "2", "Publisher": "SEC", "Section": "3", "Subparagraph": "1", "Subsection": "example" }, "r7": { "Chapter": "A", "Clause": "i", "Name": "Form", "Number": "N-1A", "Paragraph": "2", "Publisher": "SEC", "Section": "3", "Subparagraph": "a", "Subsection": "instructions" }, "r8": { "Chapter": "A", "Name": "Form", "Number": "N-1A", "Paragraph": "3", "Publisher": "SEC", "Section": "3", "Subparagraph": "a", "Subsection": "instructions" }, "r9": { "Chapter": "A", "Clause": "i", "Name": "Form", "Number": "N-1A", "Paragraph": "3", "Publisher": "SEC", "Section": "3", "Subparagraph": "c", "Subsection": "instructions" } }, "version": "2.1" }