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Variable Interest Entities (Debt of Consolidated Investment Entities) (Details 5) (Consolidated investment entities [Member], USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Debt and stated interest rates    
Long-term debt $ 6,867us-gaap_LongTermDebt $ 5,736us-gaap_LongTermDebt
CLO [Member]    
Debt and stated interest rates    
Long-term debt 6,030us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
/ amp_VariableInterestEntityTypeAxis
= amp_CLOMember
4,804us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
/ amp_VariableInterestEntityTypeAxis
= amp_CLOMember
Weighted Average Interest Rate (as a percent) 1.30%us-gaap_LongtermDebtWeightedAverageInterestRate
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
/ amp_VariableInterestEntityTypeAxis
= amp_CLOMember
1.00%us-gaap_LongtermDebtWeightedAverageInterestRate
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
/ amp_VariableInterestEntityTypeAxis
= amp_CLOMember
Property Fund [Member]    
Debt and stated interest rates    
Long-term debt $ 837us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
/ amp_VariableInterestEntityTypeAxis
= amp_PropertyFundMember
$ 932us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
/ amp_VariableInterestEntityTypeAxis
= amp_PropertyFundMember
Weighted Average Interest Rate (as a percent) 2.70%us-gaap_LongtermDebtWeightedAverageInterestRate
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
/ amp_VariableInterestEntityTypeAxis
= amp_PropertyFundMember
3.20%us-gaap_LongtermDebtWeightedAverageInterestRate
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
/ amp_VariableInterestEntityTypeAxis
= amp_PropertyFundMember