Adoption of ASU 2018-12 - Cumulative Effect Adjustments to Components of Stockholders’ Equity (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total	$ 10,507	$ 8,604	$ 25,934
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total	(869)	1,414	3,734		$ 4,167
AOCI
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total	$ (1,585)	$ (5,713)	$ 10,250		9,021
Cumulative effect from adoption of new accounting standards
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total					4,822
Cumulative effect from adoption of new accounting standards | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total					(1,820)
Cumulative effect from adoption of new accounting standards | AOCI
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total					4,822
Accounting Standards Update 2018-12 | Cumulative effect from adoption of new accounting standards
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
DAC, VOBA, DSI and DFEL				$ 2,271
Additional liabilities for other insurance benefits				1,197
LFPB and Other				(1,641)
MRBs				1,175
Total				3,002	3,002
Accounting Standards Update 2018-12 | Cumulative effect from adoption of new accounting standards | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
DAC, VOBA, DSI and DFEL				0
Additional liabilities for other insurance benefits				0
LFPB and Other				(121)
MRBs				(1,699)
Total				(1,820)	(1,820)
Accounting Standards Update 2018-12 | Cumulative effect from adoption of new accounting standards | AOCI
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
DAC, VOBA, DSI and DFEL				2,271
Additional liabilities for other insurance benefits				1,197
LFPB and Other				(1,520)
MRBs				2,874
Total				$ 4,822	$ 4,822