Deferred Policy Acquisition Costs - Rollforward of DSI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Jan. 01, 2021	Dec. 31, 2020
Summary of Significant Accounting Policies [Line Items]
Aggregate carrying amount in the Condensed Consolidated Balance Sheets	$ 13,304		$ 12,857	$ 12,955
Other assets, excluding DSI	12,400	$ 12,600			$ 12,800
Deferred Sale Inducements
Summary of Significant Accounting Policies [Line Items]
Balance, beginning of year	558	619
Capitalization	2	2
Amortization expense	(17)	(17)
Balance, end of period	543	604
Deferred Sale Inducements | Individual Retirement
Summary of Significant Accounting Policies [Line Items]
Balance, beginning of year	381	428
Capitalization	2	2
Amortization expense	(14)	(13)
Balance, end of period	369	417
Deferred Sale Inducements | Group Retirement
Summary of Significant Accounting Policies [Line Items]
Balance, beginning of year	177	191
Capitalization	0	0
Amortization expense	(3)	(4)
Balance, end of period	$ 174	$ 187