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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Jul. 31, 2024 | Jul. 31, 2023
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Payments for repurchase of common stock | $ 88.3 |  |  | $ 97.8 |  |  | $ 369.3 | $ 344.4 |  |
Quarterly cash dividend paid | $ 0.25 | $ 0.24 | $ 0.24 | $ 0.24 | $ 0.2 | $ 0.2 |  |  |  |
Dividends paid on common stock | $ 182.6 |  |  | $ 160.9 |  |  | $ 182.6 | $ 160.9 |  |
Stock Repurchase Program [Member] |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Repurchase of common stock , shares | 1.2 |  |  | 1.7 |  |  | 5.7 | 6.0 |  |
Payments for repurchase of common stock | $ 88.3 |  |  | $ 97.8 |  |  | $ 369.3 | $ 344.4 |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  | $ 1,000.0 | $ 1,000.0

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