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Employee Stock Plans - Summary of Status of Senior Executive Plans (Detail) - Executive Officer - Restricted Stock - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]      
Shares issued (in shares) 0.7 0.5 0.6
Value of shares withheld for employee tax requirements $ 11 $ 8 $ 7