Fair Values of Assets and Liabilities - Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Assets
Separate account assets at NAV	$ 79,753	$ 77,457
Market risk benefits	1,964	1,427	$ 990
Liabilities
Liabilities: embedded derivatives, net	2,573	1,945
Market risk benefits	1,335	1,762	$ 2,123
Ameriprise Financial
Assets
Available-for-Sale securities, at fair value	52,246	51,562
Ameriprise Financial | Corporate debt securities
Assets
Available-for-Sale securities, at fair value	12,854	12,576
Ameriprise Financial | Residential mortgage backed securities
Assets
Available-for-Sale securities, at fair value	21,442	21,066
Ameriprise Financial | Commercial mortgage backed securities
Assets
Available-for-Sale securities, at fair value	6,023	6,050
Ameriprise Financial | Asset backed securities
Assets
Available-for-Sale securities, at fair value	8,156	8,319
Ameriprise Financial | State and municipal obligations
Assets
Available-for-Sale securities, at fair value	758	760
Ameriprise Financial | U.S. government and agencies obligations
Assets
Available-for-Sale securities, at fair value	2,982	2,740
Ameriprise Financial | Foreign government bonds and obligations
Assets
Available-for-Sale securities, at fair value	18	18
Ameriprise Financial | Other securities
Assets
Available-for-Sale securities, at fair value	13	33
Ameriprise Financial | Policyholder account balances, future policy benefits and claims embedded derivatives
Liabilities
Cumulative increase (decrease) in embedded derivatives of adjustment for nonperformance risk	(197)	(195)
Ameriprise Financial | Level 3 | Corporate debt securities
Assets
Available-for-Sale securities, at fair value	505	469
Ameriprise Financial | Level 3 | Asset backed securities
Assets
Available-for-Sale securities, at fair value	1	1
Ameriprise Financial | Level 3 | Fixed deferred indexed annuities ceded embedded derivatives
Assets
Receivables: embedded derivatives	54	51
Ameriprise Financial | Level 3 | Fixed deferred indexed annuities embedded derivatives
Liabilities
Liabilities: embedded derivatives	52	49
Ameriprise Financial | Level 3 | IUL embedded derivatives
Liabilities
Liabilities: embedded derivatives	888	873
Ameriprise Financial | Level 3 | Structured variable annuity embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	1,620	1,011
Ameriprise Financial | Recurring basis
Assets
Cash equivalents	4,540	5,029
Available-for-Sale securities, at fair value	52,246	51,562
Investments at net asset value	10	10
Trading and other securities	315	290
Separate account assets at NAV	79,753	77,457
Investments and cash equivalents segregated for regulatory purposes	777	699
Market risk benefits	1,964	1,427
Other assets: derivative contracts	7,037	5,245
Total assets at fair value	146,696	141,770
Liabilities
Market risk benefits	1,335	1,762
Other	358	338
Other liabilities	5,317	4,221
Total liabilities at fair value	9,225	7,928
Ameriprise Financial | Recurring basis | Corporate debt securities
Assets
Available-for-Sale securities, at fair value	12,854	12,576
Ameriprise Financial | Recurring basis | Residential mortgage backed securities
Assets
Available-for-Sale securities, at fair value	21,442	21,066
Ameriprise Financial | Recurring basis | Commercial mortgage backed securities
Assets
Available-for-Sale securities, at fair value	6,023	6,050
Ameriprise Financial | Recurring basis | Asset backed securities
Assets
Available-for-Sale securities, at fair value	8,156	8,319
Ameriprise Financial | Recurring basis | State and municipal obligations
Assets
Available-for-Sale securities, at fair value	758	760
Ameriprise Financial | Recurring basis | U.S. government and agencies obligations
Assets
Available-for-Sale securities, at fair value	2,982	2,740
Ameriprise Financial | Recurring basis | Foreign government bonds and obligations
Assets
Available-for-Sale securities, at fair value	18	18
Ameriprise Financial | Recurring basis | Other securities
Assets
Available-for-Sale securities, at fair value	13	33
Ameriprise Financial | Recurring basis | Fixed deferred indexed annuities ceded embedded derivatives
Assets
Receivables: embedded derivatives	54	51
Ameriprise Financial | Recurring basis | Policyholder account balances, future policy benefits and claims embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	2,564	1,936
Ameriprise Financial | Recurring basis | Fixed deferred indexed annuities embedded derivatives
Liabilities
Liabilities: embedded derivatives	56	52
Ameriprise Financial | Recurring basis | IUL embedded derivatives
Liabilities
Liabilities: embedded derivatives	888	873
Ameriprise Financial | Recurring basis | Structured variable annuity embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	1,620	1,011
Ameriprise Financial | Recurring basis | Customer deposits - SMC embedded derivatives
Liabilities
Liabilities: embedded derivatives	9	9
Ameriprise Financial | Recurring basis | Interest rate derivative contracts
Assets
Other assets: derivative contracts	189	185
Liabilities
Other liabilities: derivative contracts	347	305
Ameriprise Financial | Recurring basis | Equity derivative contracts
Assets
Other assets: derivative contracts	6,823	5,034
Liabilities
Other liabilities: derivative contracts	4,592	3,464
Ameriprise Financial | Recurring basis | Credit derivative contracts
Assets
Other assets: derivative contracts		4
Liabilities
Other liabilities: derivative contracts	16	107
Ameriprise Financial | Recurring basis | Foreign exchange derivative contracts
Assets
Other assets: derivative contracts	25	22
Liabilities
Other liabilities: derivative contracts	4	7
Ameriprise Financial | Recurring basis | Level 1
Assets
Cash equivalents	740	704
Available-for-Sale securities, at fair value	2,982	2,740
Trading and other securities	292	265
Investments and cash equivalents segregated for regulatory purposes	777	699
Market risk benefits	0	0
Other assets: derivative contracts	92	68
Total assets at fair value	4,883	4,476
Liabilities
Market risk benefits	0	0
Other	283	259
Other liabilities	430	357
Total liabilities at fair value	430	357
Ameriprise Financial | Recurring basis | Level 1 | Corporate debt securities
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 1 | Residential mortgage backed securities
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 1 | Commercial mortgage backed securities
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 1 | Asset backed securities
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 1 | State and municipal obligations
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 1 | U.S. government and agencies obligations
Assets
Available-for-Sale securities, at fair value	2,982	2,740
Ameriprise Financial | Recurring basis | Level 1 | Foreign government bonds and obligations
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 1 | Other securities
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 1 | Fixed deferred indexed annuities ceded embedded derivatives
Assets
Receivables: embedded derivatives	0	0
Ameriprise Financial | Recurring basis | Level 1 | Policyholder account balances, future policy benefits and claims embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	0	0
Ameriprise Financial | Recurring basis | Level 1 | Fixed deferred indexed annuities embedded derivatives
Liabilities
Liabilities: embedded derivatives	0	0
Ameriprise Financial | Recurring basis | Level 1 | IUL embedded derivatives
Liabilities
Liabilities: embedded derivatives	0	0
Ameriprise Financial | Recurring basis | Level 1 | Structured variable annuity embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	0	0
Ameriprise Financial | Recurring basis | Level 1 | Customer deposits - SMC embedded derivatives
Liabilities
Liabilities: embedded derivatives	0	0
Ameriprise Financial | Recurring basis | Level 1 | Interest rate derivative contracts
Assets
Other assets: derivative contracts	0	1
Liabilities
Other liabilities: derivative contracts	0	1
Ameriprise Financial | Recurring basis | Level 1 | Equity derivative contracts
Assets
Other assets: derivative contracts	92	66
Liabilities
Other liabilities: derivative contracts	147	96
Ameriprise Financial | Recurring basis | Level 1 | Credit derivative contracts
Assets
Other assets: derivative contracts		0
Liabilities
Other liabilities: derivative contracts	0	0
Ameriprise Financial | Recurring basis | Level 1 | Foreign exchange derivative contracts
Assets
Other assets: derivative contracts	0	1
Liabilities
Other liabilities: derivative contracts	0	1
Ameriprise Financial | Recurring basis | Level 2
Assets
Cash equivalents	3,800	4,325
Available-for-Sale securities, at fair value	48,733	48,352
Trading and other securities	23	25
Investments and cash equivalents segregated for regulatory purposes	0	0
Market risk benefits	0	0
Other assets: derivative contracts	6,945	5,177
Total assets at fair value	59,501	57,879
Liabilities
Market risk benefits	0	0
Other	4	3
Other liabilities	4,816	3,788
Total liabilities at fair value	4,829	3,800
Ameriprise Financial | Recurring basis | Level 2 | Corporate debt securities
Assets
Available-for-Sale securities, at fair value	12,349	12,107
Ameriprise Financial | Recurring basis | Level 2 | Residential mortgage backed securities
Assets
Available-for-Sale securities, at fair value	21,417	21,066
Ameriprise Financial | Recurring basis | Level 2 | Commercial mortgage backed securities
Assets
Available-for-Sale securities, at fair value	6,023	6,050
Ameriprise Financial | Recurring basis | Level 2 | Asset backed securities
Assets
Available-for-Sale securities, at fair value	8,155	8,318
Ameriprise Financial | Recurring basis | Level 2 | State and municipal obligations
Assets
Available-for-Sale securities, at fair value	758	760
Ameriprise Financial | Recurring basis | Level 2 | U.S. government and agencies obligations
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 2 | Foreign government bonds and obligations
Assets
Available-for-Sale securities, at fair value	18	18
Ameriprise Financial | Recurring basis | Level 2 | Other securities
Assets
Available-for-Sale securities, at fair value	13	33
Ameriprise Financial | Recurring basis | Level 2 | Fixed deferred indexed annuities ceded embedded derivatives
Assets
Receivables: embedded derivatives	0	0
Ameriprise Financial | Recurring basis | Level 2 | Policyholder account balances, future policy benefits and claims embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	4	3
Ameriprise Financial | Recurring basis | Level 2 | Fixed deferred indexed annuities embedded derivatives
Liabilities
Liabilities: embedded derivatives	4	3
Ameriprise Financial | Recurring basis | Level 2 | IUL embedded derivatives
Liabilities
Liabilities: embedded derivatives	0	0
Ameriprise Financial | Recurring basis | Level 2 | Structured variable annuity embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	0	0
Ameriprise Financial | Recurring basis | Level 2 | Customer deposits - SMC embedded derivatives
Liabilities
Liabilities: embedded derivatives	9	9
Ameriprise Financial | Recurring basis | Level 2 | Interest rate derivative contracts
Assets
Other assets: derivative contracts	189	184
Liabilities
Other liabilities: derivative contracts	347	304
Ameriprise Financial | Recurring basis | Level 2 | Equity derivative contracts
Assets
Other assets: derivative contracts	6,731	4,968
Liabilities
Other liabilities: derivative contracts	4,445	3,368
Ameriprise Financial | Recurring basis | Level 2 | Credit derivative contracts
Assets
Other assets: derivative contracts		4
Liabilities
Other liabilities: derivative contracts	16	107
Ameriprise Financial | Recurring basis | Level 2 | Foreign exchange derivative contracts
Assets
Other assets: derivative contracts	25	21
Liabilities
Other liabilities: derivative contracts	4	6
Ameriprise Financial | Recurring basis | Level 3
Assets
Cash equivalents	0	0
Available-for-Sale securities, at fair value	531	470
Trading and other securities	0	0
Investments and cash equivalents segregated for regulatory purposes	0	0
Market risk benefits	1,964	1,427
Other assets: derivative contracts	0	0
Total assets at fair value	2,549	1,948
Liabilities
Market risk benefits	1,335	1,762
Other	71	76
Other liabilities	71	76
Total liabilities at fair value	3,966	3,771
Ameriprise Financial | Recurring basis | Level 3 | Corporate debt securities
Assets
Available-for-Sale securities, at fair value	505	469
Ameriprise Financial | Recurring basis | Level 3 | Residential mortgage backed securities
Assets
Available-for-Sale securities, at fair value	25	0
Ameriprise Financial | Recurring basis | Level 3 | Commercial mortgage backed securities
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 3 | Asset backed securities
Assets
Available-for-Sale securities, at fair value	1	1
Ameriprise Financial | Recurring basis | Level 3 | State and municipal obligations
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 3 | U.S. government and agencies obligations
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 3 | Foreign government bonds and obligations
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 3 | Other securities
Assets
Available-for-Sale securities, at fair value	0	0
Ameriprise Financial | Recurring basis | Level 3 | Fixed deferred indexed annuities ceded embedded derivatives
Assets
Receivables: embedded derivatives	54	51
Ameriprise Financial | Recurring basis | Level 3 | Policyholder account balances, future policy benefits and claims embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	2,560	1,933
Ameriprise Financial | Recurring basis | Level 3 | Fixed deferred indexed annuities embedded derivatives
Liabilities
Liabilities: embedded derivatives	52	49
Ameriprise Financial | Recurring basis | Level 3 | IUL embedded derivatives
Liabilities
Liabilities: embedded derivatives	888	873
Ameriprise Financial | Recurring basis | Level 3 | Structured variable annuity embedded derivatives
Liabilities
Liabilities: embedded derivatives, net	1,620	1,011
Ameriprise Financial | Recurring basis | Level 3 | Customer deposits - SMC embedded derivatives
Liabilities
Liabilities: embedded derivatives	0	0
Ameriprise Financial | Recurring basis | Level 3 | Interest rate derivative contracts
Assets
Other assets: derivative contracts	0	0
Liabilities
Other liabilities: derivative contracts	0	0
Ameriprise Financial | Recurring basis | Level 3 | Equity derivative contracts
Assets
Other assets: derivative contracts	0	0
Liabilities
Other liabilities: derivative contracts	0	0
Ameriprise Financial | Recurring basis | Level 3 | Credit derivative contracts
Assets
Other assets: derivative contracts		0
Liabilities
Other liabilities: derivative contracts	0	0
Ameriprise Financial | Recurring basis | Level 3 | Foreign exchange derivative contracts
Assets
Other assets: derivative contracts	0	0
Liabilities
Other liabilities: derivative contracts	$ 0	$ 0