Basis of Presentation and Summary of Significant Accounting Policies - Comprehensive Earnings (Loss) - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
COMPREHENSIVE EARNINGS (LOSS)
Tax rate used (as a percent)	21.00%	21.00%	21.00%	21.00%
Other comprehensive earnings (loss), tax (benefit)	$ 7	$ 21	$ 20	$ 16
Unrealized gains (loss), net of tax, recognized in other comprehensive earnings (loss)			$ 76	$ (60)