Insurance Liabilities - Summary of Separate Accounts (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Individual Retirement
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	$ 42,472	$ 56,739
Individual Retirement | Equity funds
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	21,216	28,524
Individual Retirement | Bond funds
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	3,587	4,651
Individual Retirement | Balanced funds
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	17,008	23,018
Individual Retirement | Money market funds
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	661	546
Group Retirement
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	32,269	44,834
Group Retirement | Equity funds
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	23,119	33,718
Group Retirement | Bond funds
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	3,803	4,364
Group Retirement | Balanced funds
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	4,824	6,293
Group Retirement | Money market funds
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Total	$ 523	$ 459