Deferred Policy Acquisition Costs - Rollforward of DAC (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	$ 2,065	$ 2,117	$ 2,343
Capitalization	3,381	3,519	4,157
Amortization expense	(3,371)	(3,425)	(3,771)
Other, including foreign exchange	31	(146)	(34)
Dispositions	0	0	(578)
Balance, end of year	$ 2,106	$ 2,065	$ 2,117