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Stock-Based Compensation - Stock Option Exercises and Restricted Stock Vesting (Detail) - USD ($) shares in Millions, $ in Millions | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Proceeds from stock option exercises | $ 34 | $ 21
Aggregate intrinsic value | 43 | 44
Tax benefit realized upon exercise | $ 7 | $ 10
Number of shares exercised (shares) | 0.2 | 0.2
Restricted Stock |  |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Fair value of shares vested | $ 176 | $ 147
Tax benefit realized upon vesting | $ 43 | $ 34
Number of shares vested (shares) | 0.5 | 0.5
Performance Based Restricted Stock |  |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Fair value of shares vested | $ 40 | $ 24
Tax benefit realized upon vesting | $ 9 | $ 3
Number of shares vested (shares) | 0.1 | 0.1

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