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Basis of Presentation and Summary of Significant Accounting Policies - Comprehensive Earnings (Loss) - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2026 | Mar. 31, 2025
COMPREHENSIVE EARNINGS (LOSS) |  |
U.S. federal statutory tax rate (as a percent) | 21.00% | 21.00%
Other comprehensive earnings (loss), tax (benefit) | $ (7) | $ 8
Unrealized gains (loss), net of tax, recognized in other comprehensive earnings (loss) | $ (25) | $ 30

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