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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Footnotes) (Details 5) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 31, 2011
Dec. 31, 2014
Dec. 31, 2013
Ameriprise Financial, Inc:      
Proceeds from sale of business $ 150us-gaap_ProceedsFromDivestitureOfBusinesses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Debt      
Repurchase agreements, debt   50us-gaap_SecuredDebtRepurchaseAgreements
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Short-term borrowings   150us-gaap_ShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
450us-gaap_ShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Guarantees, Commitments and Contingencies      
Secured Demand Notes   200us-gaap_SecuredDemandNotes
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Ameriprise Certificate Company [Member]      
Guarantees, Commitments and Contingencies      
Maximum commitment under Capital Support Agreement   $ 50amp_MaximumCommitmentUnderCapitalSupportAgreement
/ dei_LegalEntityAxis
= amp_InvestmentCompanySubsidiariesMember
$ 115amp_MaximumCommitmentUnderCapitalSupportAgreement
/ dei_LegalEntityAxis
= amp_InvestmentCompanySubsidiariesMember