Deferred Policy Acquisition Costs - Rollforward of DAC (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	$ 2,117	$ 2,343
Capitalization	2,665	3,319
Amortization expense	(2,543)	(2,894)
Other, including foreign exchange	(48)	(76)
Reclassified to held for sale	0	(623)
Balance, end of year	$ 2,191	$ 2,069