Deferred Policy Acquisition Costs (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	$ 2,106	$ 2,065
Capitalization	2,873	2,536
Amortization expense	(2,658)	(2,522)
Other, including foreign exchange	12	56
Balance, end of period	$ 2,333	$ 2,135

Amount of amortization expense (reversal of expense) for deferred policy acquisition costs.

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+ Details

- Definition

Amount of deferred policy acquisition cost capitalized on contract remaining in force.

+ References + Details