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Stock-Based Compensation Plans - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Shares under equity incentive compensation plan for future grant | 3,168,796 |  |
Stock-based compensation expense | $ 116 | $ 118 | $ 111
Income tax benefits recognized | 25 | 24 | 26
Cash received from exercised stock options | 138 | 32 | 37
Fair value of stock-based awards granted | 141 | 124 | 99
Intrinsic value of vested restricted stock and restricted stock units and exercised stock options | 134 | $ 96 | $ 125
Unrecognized compensation cost related to non-vested awards | $ 48 |  |
Unrecognized compensation cost expected to be recognized over a weighted-average period (in years) | 1 year |  |
Directors’ Stock Compensation Programs |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Shares issuable under deferred compensation plans | 1,811 | 1,979 |
Shares issued in connection with deferred compensation plans | 22,990 | 27,027 |
Deferred Bonus Plan |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Shares issuable under deferred compensation plans | 9,831 | 10,238 |
Stock Purchase Plan |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Shares under equity incentive compensation plan for future grant | 1,871,663 |  |
Shares issued | 100,964 | 90,575 | 75,232
Cash received from exercise of stock options | $ 13 |  | $ 11
Restricted Stock |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Vesting period | 3 years | 3 years | 3 years
Stock Option Awards |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Stock options exercisable period, maximum | 10 years |  |

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