Investments - Available-for-Sale Securities by Type (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments
Accrued interest excluded from amortized cost basis, location	Receivables	Receivables
Ameriprise Financial
Investments
Amortized Cost	$ 53,048	$ 43,384
Gross Unrealized Gains	615	289
Gross Unrealized Losses	(2,099)	(2,840)
Allowance for Credit Loss	(2)	(22)	$ (1)	$ (11)
Fair Value	51,562	40,811
Accrued interest excluded from amortized cost basis	319	237
Ameriprise Financial \| Corporate debt securities
Investments
Amortized Cost	12,675	10,361
Gross Unrealized Gains	409	180
Gross Unrealized Losses	(507)	(823)
Allowance for Credit Loss	(1)	(20)	0	(10)
Fair Value	12,576	9,698
Ameriprise Financial \| Residential mortgage backed securities
Investments
Amortized Cost	22,130	17,056
Gross Unrealized Gains	107	37
Gross Unrealized Losses	(1,171)	(1,390)
Allowance for Credit Loss	0	0
Fair Value	21,066	15,703
Ameriprise Financial \| Commercial mortgage backed securities
Investments
Amortized Cost	6,380	6,648
Gross Unrealized Gains	11	3
Gross Unrealized Losses	(341)	(439)
Allowance for Credit Loss	0	0
Fair Value	6,050	6,212
Ameriprise Financial \| Asset backed securities
Investments
Amortized Cost	8,353	6,408
Gross Unrealized Gains	25	14
Gross Unrealized Losses	(59)	(158)
Allowance for Credit Loss	0	0	0	(1)
Fair Value	8,319	6,264
Ameriprise Financial \| State and municipal obligations
Investments
Amortized Cost	719	773
Gross Unrealized Gains	62	53
Gross Unrealized Losses	(20)	(27)
Allowance for Credit Loss	(1)	(2)	$ (1)	$ 0
Fair Value	760	797
Ameriprise Financial \| U.S. government and agency obligations
Investments
Amortized Cost	2,739	2,079
Gross Unrealized Gains	1	1
Gross Unrealized Losses	0	(1)
Allowance for Credit Loss	0	0
Fair Value	2,740	2,079
Ameriprise Financial \| Foreign government bonds and obligations
Investments
Amortized Cost	19	43
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	(2)
Allowance for Credit Loss	0	0
Fair Value	18	41
Ameriprise Financial \| Other securities
Investments
Amortized Cost	33	16
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Allowance for Credit Loss	0	0
Fair Value	$ 33	$ 17

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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