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Stock Compensation Plans - SSAR's and Stock Option - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
SSAR's [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Contractual term, in years | 7 years |  |
Unrecognized compensation cost related to non-vested stock options and SSAR, RSU, PRS and Cash RSU awards granted | $ 1 |  |
Unrecognized compensation cost related to non-vested stock options and SSAR, RSU, PRS and Cash RSU awards granted, weighted average period, in years | 3 months 3 days |  |
SSAR's and Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted average exercise price, exercisable (USD per share) | $ 111.70 | $ 109.59 | $ 109.50
Intrinsic value of options/SSAR's exercised | $ 1 | $ 1 | $ 2

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