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Stock-Based Compensation - Additional Information (Detail) - USD ($) | 1 Months Ended | 12 Months Ended |  |
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Jan. 31, 2025 | Jul. 31, 2024 | Jan. 31, 2024 | Jul. 31, 2023 | Jan. 31, 2023 | Jan. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jul. 31, 2022 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Allocated share-based compensation expense. |  |  |  |  |  |  | $ 60,122,000 | $ 57,682,000 | $ 48,228,000 |  |
Total shareholder return performance measurement period |  |  |  |  |  |  | 3 years |  |  |  |
Restricted stock unit awards granted |  |  |  |  |  |  | 703,000 | 728,000 | 660,000 |  |
Weighted average grant date fair value of restricted stock units granted |  |  |  |  |  |  | $ 97.06 | $ 105.05 | $ 108.74 |  |
Description of retirement policy |  |  |  |  |  |  | On January 22, 2024, the Board enacted the Executive Retirement Policy for Restricted Stock Unit and Option Vesting (the "Retirement Policy"). Under the Retirement Policy, an executive officer that is over the age of 65 and has 10 or more years of service as of the effective date of his or her retirement will be eligible for continued vesting of his or her unvested time-based restricted stock units and stock options granted prior to his or her retirement date. |  |  |  |
Stock price |  |  |  |  |  |  | $ 95.14 | $ 104.15 | $ 112.12 |  |
Tax benefit from compensation expense |  |  |  |  |  |  | $ 10,472,000 | $ 10,397,000 | $ 11,493,000 |  |
Total unrecognized expense related to non-vested restricted stock unit awards and stock options |  |  |  |  |  |  | $ 82,600,000 |  |  |  |
Unrecognized expense related to non-vested restricted stock unit awards and stock options expected to be recognized over weighted average period, in years |  |  |  |  |  |  | 2 years 6 months |  |  |  |
Maximum percent of shares allowed to purchase |  |  |  |  |  |  | 10.00% |  |  |  |
Fair market value |  |  |  |  |  |  | $ 25,000 |  |  |  |
Maximum number of shares allowed to purchase |  |  |  |  |  |  | 6,000 |  |  |  |
Percentage of common stock price paid |  |  |  |  |  |  | 85.00% |  |  |  |
Common stock issued to employees |  | 100,000 | 200,000 | 200,000 | 200,000 | 200,000 |  |  |  |  |
Value of common stock issued to employees per share |  | $ 126.05 |  | $ 94.64 |  |  | $ 107.04 | $ 92.25 | $ 74.25 | $ 76.12 |
Number of shares available for grant |  |  |  |  |  |  | 3,665,000 | 4,353,000 | 5,062,000 |  | 5,713,000
Retirement Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Allocated share-based compensation expense. |  |  |  |  |  |  | $ 5,900,000 |  |  |  |
Employee Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Cash received from employees, employee stock options exercises |  |  |  |  |  |  | 6,600,000 | $ 2,200,000 | $ 900,000 |  |
Tax benefit from compensation expense |  |  |  |  |  |  | $ 200,000 | $ 200,000 | $ 100,000 |  |
Percentage of common stock price paid |  |  |  |  |  |  | 100.00% |  |  |  |
Employee Stock Option [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Period of stock granted to employees and executive officers vest in equal installments |  |  |  |  |  |  | 7 years |  |  |  |
Employee Stock Option [Member] | Measurement Input, Expected Dividend Payment [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Estimated annual dividend amount per share |  |  |  |  |  |  | $ 0.48 | $ 0.44 | $ 0.44 |  |
Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Restricted stock unit awards granted |  |  |  |  |  |  | 703,000 | 728,000 | 660,000 |  |
Restricted Stock Units | Employees |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Period of stock granted to employees and executive officers vest in equal installments |  |  |  |  |  |  | 4 years |  |  |  |
Percentage of awards vesting on the first anniversary of grant date |  |  |  |  |  |  | 100.00% |  |  |  |
Restricted Stock Units | Director |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Period of stock granted to employees and executive officers vest in equal installments |  |  |  |  |  |  | 1 year |  |  |  |
TSR Performance-Based Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Total shareholder return performance measurement period |  |  |  |  |  |  | 3 years |  |  |  |
Minimum years of service for retirement to be eligible for PRSUs |  |  |  |  |  |  | 10 years |  |  |  |
Restricted stock unit awards granted |  |  |  |  |  |  | 100,000 | 100,000 | 100,000 |  |
Weighted average grant date fair value of restricted stock units granted |  |  |  |  |  |  | $ 102.51 | $ 139.04 | $ 101.06 |  |
Stock price |  |  |  |  |  |  | 95.83 | 104.12 | 112.12 |  |
TSR Performance-Based Restricted Stock Units | Measurement Input, Expected Dividend Payment [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Estimated annual dividend amount per share |  |  |  |  |  |  | $ 0.48 | $ 0.44 | $ 0.44 |  |
TSR Performance-Based Restricted Stock Units | Share-based Compensation Award, Tranche One |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting of target shares upon performance achieved |  |  |  |  |  |  | 0.00% |  |  |  |
TSR Performance-Based Restricted Stock Units | Share-based Compensation Award, Tranche Two |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting of target shares upon performance achieved |  |  |  |  |  |  | 200.00% |  |  |  |
Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Number of shares available for grant |  |  |  |  |  |  | 3,200,000 |  |  |  |
Employee Stock Purchase Plan | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Period of stock granted to employees and executive officers vest in equal installments |  |  |  |  |  |  | 4 years |  |  |  |
PBIT Performance-Based Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Restricted stock unit awards granted |  |  |  |  |  |  | 100,000 | 100,000 | 100,000 |  |
Weighted average grant date fair value of restricted stock units granted |  |  |  |  |  |  | $ 94.51 | $ 102.91 | $ 110.84 |  |
Service-Based Restricted Stock Units | Employees |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Restricted stock unit awards granted |  |  |  |  |  |  | 600,000 | 500,000 | 400,000 |  |
Weighted average grant date fair value of restricted stock units granted |  |  |  |  |  |  | $ 96.72 | $ 102.45 | $ 109.42 |  |
Service-Based Restricted Stock Units | Non Employees |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Weighted average grant date fair value of restricted stock units granted |  |  |  |  |  |  | $ 121.29 | $ 90.5 | $ 105.93 |  |
Service-Based Restricted Stock Units | Executive Officer |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Restricted stock unit awards granted |  |  |  |  |  |  | 100,000 | 100,000 | 100,000 |  |
TERService Based Stock Options | Non Employee Directors |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Restricted stock unit awards granted |  |  |  |  |  |  | 100,000 | 100,000 | 100,000 |  |
Service Based Stock Options | Executive Officer |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Weighted average grant date fair value of restricted stock units granted |  |  |  |  |  |  | $ 37.5 | $ 41.23 | $ 39.01 |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Common stock issued to employees | 100,000 |  |  |  |  |  |  |  |  |  |

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