Business, Basis of Presentation and Summary of Significant Accounting Policies - Transition Table - SCF (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 5,064	$ 6,433
Policyholder account balances: Deposits	51,869	56,386
Policyholder account balances: Withdrawals	(49,013)	(52,746)
Net cash provided by (used in) financing activities	$ (1,916)	(7,223)
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Operating Activities		6,392
Policyholder account balances: Deposits		56,109
Policyholder account balances: Withdrawals		(52,428)
Net cash provided by (used in) financing activities		(7,182)
Revision of Prior Period, Accounting Standards Update, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Operating Activities		41
Policyholder account balances: Deposits		277
Policyholder account balances: Withdrawals		318
Net cash provided by (used in) financing activities		$ (41)