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Share-Based Compensation (Share-Based Compensation Expense) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense $ 160us-gaap_AllocatedShareBasedCompensationExpense $ 174us-gaap_AllocatedShareBasedCompensationExpense $ 148us-gaap_AllocatedShareBasedCompensationExpense
Tax benefit related to share-based compensation expense 55us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 60us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 51us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Total unrecognized compensation cost related to non-vested awards 94us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized    
Weighted-average period to recognize compensation cost 2 years 5 months    
Stock option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense 37us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_StockOptionMember
36us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_StockOptionMember
40us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_StockOptionMember
Restricted stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense 26us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
[1] 46us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
[1] 40us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
[1]
Restricted stock [Member] | Equity Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense 3us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= amp_EquityIncentivePlanMember
10us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= amp_EquityIncentivePlanMember
11us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= amp_EquityIncentivePlanMember
Restricted stock units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense 67us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
61us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
54us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
Liability awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense $ 30us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= amp_LiabilityAwardsMember
$ 31us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= amp_LiabilityAwardsMember
$ 14us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= amp_LiabilityAwardsMember
[1] Includes $3 million, $10 million and $11 million of expense related to EIP for the years ended December 31, 2014, 2013 and 2012, respectively.