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Restructuring Charge - Additional Information (Detail) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Restructuring and Related Activities [Abstract]        
Restructuring Charge $ 39 $ 39 $ 0 $ 61
Restructuring charge after-tax 29      
Severance 27      
Accelerated vesting expense of deferred compensation awards $ 12