Investments - Summary (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Summary of investments
Allowance for credit losses	$ 50	$ 68	$ 51
Ameriprise Financial
Summary of investments
Available-for-Sale: Fixed maturities, at fair value	32,050	36,283
Mortgage loans, net	1,953	2,718
Policy loans	835	846
Other Investments	972	1,184
Investments, Total	35,810	41,031
Ameriprise Financial \| Mortgage loans
Summary of investments
Allowance for credit losses	12	29
Ameriprise Financial \| Other investments
Summary of investments
Allowance for credit losses	$ 5	$ 12

Amount of 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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