Fair Values of Assets and Liabilities - Significant Unobservable inputs (Details) - RiverSource Life $ in Millions	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Significant unobservable inputs used in fair value measurements
Total Available-for-Sale securities	$ 15,104	$ 16,239
Corporate debt securities
Significant unobservable inputs used in fair value measurements
Total Available-for-Sale securities	8,409	9,638
Asset backed securities
Significant unobservable inputs used in fair value measurements
Total Available-for-Sale securities	482	537
Level 3 | Corporate debt securities
Significant unobservable inputs used in fair value measurements
Total Available-for-Sale securities	458	496
Level 3 | Asset backed securities
Significant unobservable inputs used in fair value measurements
Total Available-for-Sale securities	236	291
Level 3 | Fixed deferred indexed annuities ceded embedded derivatives
Significant unobservable inputs used in fair value measurements
Receivables: embedded derivatives	49	59
Level 3 | IUL embedded derivatives
Significant unobservable inputs used in fair value measurements
Embedded derivatives liability	719	905
Level 3 | Fixed deferred indexed annuity embedded derivatives
Significant unobservable inputs used in fair value measurements
Embedded derivatives liability	45	$ 56
Level 3 | GMWB and GMAB embedded derivatives
Significant unobservable inputs used in fair value measurements
Embedded derivatives liability	1,006
Embedded derivative liability, measurement input		1,486
Level 3 | Structured variable annuity embedded derivatives
Significant unobservable inputs used in fair value measurements
Embedded derivatives liability	$ 362	$ 406
Level 3 | Discounted cash flow | Corporate debt securities | Minimum | Yield/spread to U.S. Treasuries
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.010	0.008
Level 3 | Discounted cash flow | Corporate debt securities | Maximum | Yield/spread to U.S. Treasuries
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.037	0.024
Level 3 | Discounted cash flow | Corporate debt securities | Weighted average | Yield/spread to U.S. Treasuries
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.015	0.011
Level 3 | Discounted cash flow | Asset backed securities | Annual default rate
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.066	0.058
Level 3 | Discounted cash flow | Asset backed securities | Loss severity
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.250	0.250
Level 3 | Discounted cash flow | Asset backed securities | Minimum | Yield/spread to swap rates
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.0325	0.0175
Level 3 | Discounted cash flow | Asset backed securities | Maximum | Yield/spread to swap rates
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.0450	0.0275
Level 3 | Discounted cash flow | Asset backed securities | Weighted average | Annual default rate
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.066	0.058
Level 3 | Discounted cash flow | Asset backed securities | Weighted average | Loss severity
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.250	0.250
Level 3 | Discounted cash flow | Asset backed securities | Weighted average | Yield/spread to swap rates
Significant unobservable inputs used in fair value measurements
Fixed maturities, measurement inputs	0.0336	0.0182
Level 3 | Discounted cash flow | Fixed deferred indexed annuities ceded embedded derivatives | Minimum | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative asset, measurement input	0.000	0.000
Level 3 | Discounted cash flow | Fixed deferred indexed annuities ceded embedded derivatives | Maximum | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative asset, measurement input	0.668	0.668
Level 3 | Discounted cash flow | Fixed deferred indexed annuities ceded embedded derivatives | Weighted average | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative asset, measurement input	0.014	0.014
Level 3 | Discounted cash flow | IUL embedded derivatives | Nonperformance risk
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.0120	0.0065
Level 3 | Discounted cash flow | IUL embedded derivatives | Weighted average | Nonperformance risk
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.0120	0.0065
Level 3 | Discounted cash flow | Fixed deferred indexed annuity embedded derivatives | Nonperformance risk
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.0120	0.0065
Level 3 | Discounted cash flow | Fixed deferred indexed annuity embedded derivatives | Minimum | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.000	0.000
Level 3 | Discounted cash flow | Fixed deferred indexed annuity embedded derivatives | Maximum | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.668	0.668
Level 3 | Discounted cash flow | Fixed deferred indexed annuity embedded derivatives | Weighted average | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.014	0.014
Level 3 | Discounted cash flow | Fixed deferred indexed annuity embedded derivatives | Weighted average | Nonperformance risk
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.0120	0.0065
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Nonperformance risk
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.0120	0.0065
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Minimum | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.001	0.001
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Minimum | Utilization of guaranteed withdrawals
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.000	0.000
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Minimum | Market volatility
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.044	0.043
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Maximum | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.557	0.557
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Maximum | Utilization of guaranteed withdrawals
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.480	0.480
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Maximum | Market volatility
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.168	0.168
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Weighted average | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.036	0.036
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Weighted average | Utilization of guaranteed withdrawals
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.107	0.106
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Weighted average | Market volatility
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.113	0.108
Level 3 | Discounted cash flow | GMWB and GMAB embedded derivatives | Weighted average | Nonperformance risk
Significant unobservable inputs used in fair value measurements
Embedded derivatives, measurement inputs	0.0120	0.0065
Level 3 | Discounted cash flow | Structured variable annuity embedded derivatives | Nonperformance risk
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.0120	0.0065
Level 3 | Discounted cash flow | Structured variable annuity embedded derivatives | Minimum | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.008	0.008
Level 3 | Discounted cash flow | Structured variable annuity embedded derivatives | Maximum | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.400	0.400
Level 3 | Discounted cash flow | Structured variable annuity embedded derivatives | Weighted average | Surrender rate
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.009	0.009
Level 3 | Discounted cash flow | Structured variable annuity embedded derivatives | Weighted average | Nonperformance risk
Significant unobservable inputs used in fair value measurements
Embedded derivative liability, measurement input	0.0120	0.0065