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Common Stock - Additional Information (Detail) - USD ($) | 12 Months Ended |  |
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Jul. 31, 2024 | Jan. 01, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Dividends declared and paid, per share | $ 0.8 | $ 0.8 | $ 0.8 |  |  |  |
Stock repurchase programs authorized to purchase, value | $ 824,360,000 |  |  |  |  | $ 1,000,000,000 | $ 422,880,000
Stock repurchased, value | 674,980,000 | $ 552,608,000 | $ 832,918,000 |  |  |  |
Compensation cost recognized | $ 99,349,000 | 87,720,000 | 85,378,000 |  |  |  |
Restricted stock units granted | 3,000 |  |  |  |  |  |
Weighted-average grant date fair value | $ 44.58 |  |  |  |  |  |
Forfeitures utilization term | 5 years |  |  |  |  |  |
Total in-the-money value of all stock options exercised during the year | $ 185,300,000 | $ 57,100,000 | 49,400,000 |  |  |  |
Weighted average grant-date fair value of restricted stock units | $ 42.56 | $ 39.22 |  |  |  |  |
Revision of Prior Period, Accounting Standards Update, Adjustment |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
New accounting adoption impact on income taxes and net income | $ 15,900,000 | $ 4,700,000 | 636,000 |  |  |  |
New accounting adoption impact on executive compensation | 10,200,000 |  |  |  |  |  |
Employee Stock Option |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation cost recognized, pre-tax charge | 54,300,000 | 64,200,000 | 66,200,000 |  |  |  |
Restricted Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation cost recognized, after-tax | 45,100,000 | $ 23,500,000 | $ 19,100,000 |  |  |  |
Unrecognized compensation cost | $ 149,400,000 |  |  |  |  |  |
Unrecognized compensation cost vesting period | 2 years 3 months 18 days |  |  |  |  |  |
Unvested Stock option |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Unrecognized compensation cost | $ 149,400,000 |  |  |  |  |  |
Unrecognized compensation cost vesting period | 2 years 3 months 18 days |  |  |  |  |  |
Income Tax Withholding Obligations |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Stock repurchased, shares | 375,248 | 164,649 | 153,305 |  |  |  |
Stock repurchased, value | $ 72,200,000 | $ 22,900,000 | $ 22,000,000 |  |  |  |
Stock Repurchase Programs Twenty Twenty Three |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Stock repurchased, shares | 2,982,906 | 3,855,046 |  |  |  |  |
Stock repurchased, value | $ 598,500,000 | $ 524,500,000 |  |  |  |  |
Total number of shares cancelled |  | 2,356 |  |  |  |  |
Stock Repurchase Programs Twenty Twenty Two |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Stock repurchase programs authorized to purchase, value |  |  | $ 1,400,000,000 |  |  |  |
Stock repurchased, shares |  |  | 6,666,547 |  |  |  |
Stock repurchased, value |  |  | $ 810,900,000 |  |  |  |
Total number of shares cancelled |  |  | 8,467 |  |  |  |
Stock Repurchase Programs Twenty Twenty One |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Stock repurchase programs authorized to purchase, value | $ 1,000,000,000 |  |  |  |  |  |
Total number of shares cancelled | 107 |  |  |  |  |  |
Stock Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Weighted-average grant date fair value of option granted, number of shares |  |  |  |  | 2,200,000 |  |
Additional stock options granted | 0 |  |  |  |  |  |
2020 Stock Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Weighted-average grant date fair value of option granted, number of shares | 3,000 | 1,600,000 | 1,500,000 |  |  |  |
Total number of shares cancelled | 0 |  |  |  |  |  |
Weighted-average grant date fair value | $ 44.58 | $ 41.88 | $ 45.63 |  |  |  |
2020 Stock Incentive Plan | Restricted Stock Units (RSUs) |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted stock units granted | 514,765 | 255,085 | 207,253 |  |  |  |
Weighted average grant-date fair value of restricted stock units | $ 181.05 | $ 118.14 | $ 142.7 |  |  |  |
2020 Stock Incentive Plan | Performance Based Restricted Stock Units [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted stock units granted | 63,362 | 93,606 | 65,768 |  |  |  |
2010 Employees' Restricted Stock Purchase Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Additional stock options granted | 0 |  |  |  |  |  |
Stock Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options are exercisable, in period |  |  |  | 4 years |  |  |
Employee Stock Purchase Plan Twenty Zero Five |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted stock units granted | 81,146 | 100,507 | 127,538 |  |  |  |
Common Stock remain available for issuance | 1,100,000 |  |  |  |  |  |
Stock issued during period, net of cancellations | 1,900,000 |  |  |  |  |  |
Class B |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Common Stock, shares issued | 57,726,557 | 59,930,083 |  |  |  |  |
Issuance upon conversion of shares | 24,386,891 |  |  |  |  |  |
Class B | Stock Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares reserved | 35,600,000 |  |  |  |  |  |
Class B | 2020 Stock Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Common Stock, shares issued |  |  |  |  | 18,100,000 |  |
Common Stock remain available for issuance | 8,620,000 |  |  |  |  |  |
Class B | Employee Stock Purchase Plan Twenty Zero Five |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares reserved | 3,000,000 |  |  |  |  |  |
Special Dividend 2024 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Dividends declared and paid | $ 53,300,000 |  |  |  |  |  |
Special Dividend 2023 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Dividends declared and paid |  | $ 55,500,000 |  |  |  |  |
Special Dividends 2022 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Dividends declared and paid |  |  | $ 58,400,000 |  |  |  |

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