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Accumulated Other Comprehensive Income (Loss) ("AOCI") - Components of AOCI (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Beginning balance $ 1,128 $ 1,063
Net current-period other comprehensive income (loss) 3 (4)
Ending balance 1,144 1,079
Accumulated Other Comprehensive Income (Loss) [Member]    
Beginning balance (153) (145)
Net current-period other comprehensive income (loss) 3 (4)
Ending balance $ (150) $ (149)