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Stock-based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 1 Months Ended | 12 Months Ended |
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Mar. 31, 2025 | Apr. 30, 2024 | Mar. 31, 2022 | Mar. 31, 2019 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2021 | May 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  | $ 257.7 | $ 203.3 | $ 159.4 |  |
Tax benefit from compensation expense |  |  |  |  | 41.7 | 37.0 | 30.4 |  |
Cash received from exercise of stock options |  |  |  |  | $ 425.5 | $ 355.1 | $ 115.4 |  |
Grant date fair value of options |  |  |  |  | $ 97.28 | $ 67.87 | $ 63.5 |  |
Time-based Stock Options [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Equity-based incentive plan, description |  |  |  |  | Time-based stock options generally vest 25% on the first anniversary of the grant date and 1/36th of the remaining balance each month thereafter for 36 months. |  |  |  |
Employee service share-based compensation period for recognition of expense |  |  |  |  | 2 years 4 months 24 days | 2 years 3 months 18 days |  |  |
Option vesting period |  |  |  |  | 36 months |  |  |  |
Awards granted, weighted average granted fair value |  |  |  |  | $ 20.02 | $ 17.11 | $ 17.54 |  |
Awards vested, fair value |  |  |  |  | $ 44.7 | $ 61.2 | $ 86.9 |  |
Non-cash stock-based compensation expense not yet recognized |  |  |  |  | $ 57.4 | $ 71.4 |  |  |
Time-based Stock Options [Member] | Tranche One [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Equity based incentive plan vesting percentage |  |  |  |  | 25.00% |  |  |  |
Time-based Stock Options [Member] | Tranche Two and Thereafter [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Equity based incentive plan vesting percentage |  |  |  |  | 0.0208% |  |  |  |
Performance Based Stock Units [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  | $ 26.0 |  |  |  |
Employee service share-based compensation period for recognition of expense |  |  |  |  | 1 year 6 months | 1 year 9 months 18 days |  |  |
Non-cash stock-based compensation expense not yet recognized |  |  |  |  | $ 32.8 | $ 21.3 |  |  |
Grant date fair value of options |  |  | $ 71.89 |  |  |  |  |  |
Performance Based Stock Units [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Equity based incentive plan vesting percentage |  |  |  |  | 200.00% |  |  |  |
Performance Based Stock Units [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Equity based incentive plan vesting percentage |  |  |  |  | 0.00% |  |  |  |
Time Based Option And Stock Appreciation Rights [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Total intrinsic value of the awards |  |  |  |  | $ 234.3 | $ 198.5 | 84.2 |  |
Performance Based Stock Options [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Employee service share-based compensation period for recognition of expense |  |  |  |  |  | 2 months 12 days |  |  |
Option vesting period |  |  |  |  | 3 years |  |  | 3 years |
Non-cash stock-based compensation expense not yet recognized |  |  |  |  |  | $ 3.8 |  |  |
Performance Based Stock Options [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Equity based incentive plan vesting percentage |  |  |  |  | 81.80% | 79.20% |  | 200.00% |
Performance Based Stock Options [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Equity based incentive plan vesting percentage |  |  |  |  |  |  |  | 0.00% |
Employee Stock Option [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Tax benefit from compensation expense |  |  |  |  | $ 92.5 | $ 58.5 | $ 28.9 |  |
Second Amended and Restated 2014 Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Additional shares available for equity awards |  |  |  | 34.0 |  |  |  |  |
2014 Stock Option Plan [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Stock based Compensation not yet Recognized |  |  |  |  | $ 246.1 | $ 196.2 |  |  |
Employee service share-based compensation period for recognition of expense |  |  |  |  | 1 year 9 months 18 days | 1 year 10 months 24 days |  |  |
Option vesting period |  |  |  |  | 2 years | 2 years | 2 years |  |
2014 Stock Option Plan [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Shares authorized under equity-based incentive plan |  |  |  |  |  |  |  |  | 6.0
Amended 2014 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Initial authorized shares |  |  |  |  |  |  |  |  | 24.0
2023 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Additional shares available for equity awards | 6.0 | 2.6 |  |  | 11.5 |  |  |  |
2014 Plan, 2008 Plan and 2006 Plan [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Equity-based incentive plan, description |  |  |  |  | Under the terms of the 2023 Plans and 2014 Plans, the exercise price of awards is set on the grant date and may not be less than the fair market value per share on such date. |  |  |  |
Equity based incentive plan expiry period from date of grant |  |  |  |  | 10 years |  |  |  |

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- Definition Weighted average grant-date fair value of options vested. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-4 + Details
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