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Fair Values of Assets and Liabilities (Details 4) (Ameriprise Financial, USD $)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Available-for-Sale Securities
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation        
Net Investment Income $ 1 $ 25 $ 21 $ 23
Residential mortgage backed securities
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation        
Net Investment Income   20 17 15
Commercial mortgage backed securities
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation        
Net Investment Income   1   1
Asset backed securities
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation        
Net Investment Income 1 4 4 7
Trading securities
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation        
Net Investment Income   2   2
GMWB and GMAB embedded derivatives
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation        
Benefits, claims, losses and settlement expenses $ (90) $ (852) $ 166 $ (719)