Adoption of ASU 2018-12 - Summary of Effect on Previously Reported Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
ASSETS
DAC, VOBA and DSI	$ 12,418	$ 12,263		$ 12,162
Reinsurance recoverables, net of allowance for credit losses	45,110	21,804		20,713
Assets	3,894	2,807
Other assets	10,597	7,677
Total assets	373,976	335,582
Liabilities
Future contract benefits	40,174	38,302		42,044
Liabilities	1,716	2,078
Deferred front-end loads	5,923	5,115		3,586
Other liabilities	12,438	6,251
Total liabilities	363,469	326,978
Stockholder’s Equity
Retained earnings	(869)	1,414
Accumulated other comprehensive income (loss)	(1,585)	(5,713)
Total stockholder’s equity	$ 10,507	8,604	$ 25,934
As Previously Reported
ASSETS
DAC, VOBA and DSI		13,873		6,083
Reinsurance recoverables, net of allowance for credit losses		24,450		17,550
Other assets		8,831
Total assets		338,185
Liabilities
Future contract benefits		41,203		38,318
Deferred front-end loads		5,765		396
Other liabilities		7,719
Total liabilities		329,919
Stockholder’s Equity
Retained earnings		2,436
Accumulated other comprehensive income (loss)		(7,073)
Total stockholder’s equity		8,266	22,860
Accounting Standards Update 2018-12 | Adoption of New Accounting Standard
ASSETS
DAC, VOBA and DSI		(1,610)		6,079
Reinsurance recoverables, net of allowance for credit losses		(2,646)
Assets		2,807
Other assets		(1,154)
Total assets		(2,603)
Liabilities
Future contract benefits		(2,901)		(1,700)
Liabilities		2,078
Deferred front-end loads		(650)		$ 3,190
Other liabilities		(1,468)
Total liabilities		(2,941)
Stockholder’s Equity
Retained earnings		(1,022)
Accumulated other comprehensive income (loss)		1,360
Total stockholder’s equity		$ 338	$ 3,074