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Stockholders’ Equity - Repurchase of Common Stock and Retirement of Treasury Shares (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Aug. 02, 2021 | May 31, 2018
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Number of common stock shares repurchased (in shares) | 1,529,575 |  |  |  |
Value of shares repurchased | $ 79.8 |  |  |  |
Common stock repurchase (price per share) | $ 52.20 |  |  |  |
Treasury stock value | $ 80.1 | $ 280.2 | $ 401.6 |  |
Treasury stock retired | 80,000,000 | 0 | 0 |  |
Common Stock |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Number of common stock shares repurchased (in shares) |  |  | 35,100 |  |
Value of shares repurchased |  |  | $ 1.6 |  |
Common Stock in Treasury |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Treasury stock retired | 80,000,000 |  |  |  |
August 2021 Share Repurchase Program |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  | $ 1,000.0 |
Stock repurchase program, remaining authorized repurchase amount | $ 536.5 |  |  |  |
May 2018 Repurchase Program |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  | $ 1,000.0
Common Stock Repurchase Set Two |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Number of common stock shares repurchased (in shares) |  | 4,527,887 |  |  |
Value of shares repurchased |  | $ 280.1 |  |  |
Common stock repurchase (price per share) |  | $ 61.86 |  |  |
Common Stock Repurchase Set One |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Number of common stock shares repurchased (in shares) |  |  | 7,875,407 |  |
Common stock repurchase (price per share) |  |  | $ 50.96 |  |
Treasury stock value |  |  | $ 401.4 |  |

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