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Accumulated Other Comprehensive Income (Loss) ("AOCI") - Components of AOCI (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Accumulated other comprehensive income (loss), Beginning balance   $ (145)     $ (145)  
Net current-period other comprehensive income (loss) $ (2) (4) $ 3 $ 1    
Accumulated other comprehensive income (loss), Ending balance (151)       (151)  
Accumulated Other Comprehensive Income (Loss) [Member]            
Accumulated other comprehensive income (loss), Beginning balance   (145)   (150) (145) $ (150)
Net current-period other comprehensive income (loss) (2) $ (4) 3 $ 1 (6) 4
Accumulated other comprehensive income (loss), Ending balance $ (151)   $ (146)   $ (151) $ (146)