Name:	amp_NetInvestmentIncomeAndGainLossOnInvestments
Namespace Prefix:	amp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Net amount, after discount, accretion, premium amortization and other items, of interest income and dividend income classified as other.

No definition available.

Name:	amp_OtherInterestAndDividendIncomeNet
Namespace Prefix:	amp_
Data Type:	xbrli:monetaryItemType
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Amount of investment income (loss) of qualified affordable housing project investments accounted for using the equity method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 740
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=116633289&loc=SL49122993-202985

Name:	us-gaap_IncomeLossFromAffordableHousingProjectsEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of interest income, amortization of premium and accretion of discount, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading); classified as operating.

No definition available.

Name:	us-gaap_InterestIncomeDebtSecuritiesOperating
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of realized gain (loss) on investment.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.3(a))
-URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Name:	us-gaap_RealizedInvestmentGainsLosses
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Data Type:	xbrli:monetaryItemType
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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.

No definition available.