Deferred Policy Acquisition Costs - Rollforward of DAC (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	$ 2,117	$ 2,343
Capitalization	1,803	2,396
Amortization expense	(1,680)	(1,972)
Other, including foreign exchange	(117)	(23)
Reclassified to held for sale	0	(712)
Balance, end of year	$ 2,123	$ 2,032