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Investments - Summary (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Summary of investments
Allowance for credit losses	$ 59	$ 50	$ 68	$ 51
Ameriprise Financial
Summary of investments
Available-for-Sale securities, at fair value	40,811	32,050
Mortgage loans (allowance for credit losses: 2022, $12; 2021, $12)	1,987	1,953
Policy loans	847	835
Other investments (allowance for credit losses: 2022, $5; 2021, $5)	879	972
Total	44,524	35,810
Ameriprise Financial \| Mortgage loans
Summary of investments
Allowance for credit losses	12	12
Ameriprise Financial \| Other securities
Summary of investments
Allowance for credit losses	$ 5	$ 5