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Stockholders' Equity - Additional Information (Detail) - USD ($) |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 11, 2021 | Feb. 12, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Feb. 12, 2019
Class of Stock [Line Items] |  |  |  |  |  |  |
Shares repurchased value |  |  |  |  |  |  | $ 500,000,000
Repurchase of common stock (in shares) |  |  |  |  | 55,000 | 133,000 |
Repurchase of common stock under share repurchase authorization |  |  |  |  | $ 4,700,000 | $ 11,900,000 |
Remaining authorization for future share repurchases |  |  | $ 484,400,000 |  | $ 484,400,000 |  |
Increase in dividend rate, percentage |  | 29.00% |  |  |  |  |
Dividend declared per share (in USD per share) |  | $ 0.18 | $ 0.18 | $ 0.14 |  |  |
Treasury stock (in shares) |  |  | 36,227,061 | 36,500,908 | 36,227,061 | 36,500,908 |
Treasury stock, cost |  |  | $ 1,565,270,000 | $ 1,574,464,000 | $ 1,565,270,000 | $ 1,574,464,000 |
Number of shares outstanding (in shares) |  |  | 230,500,000 | 229,100,000 | 230,500,000 | 229,100,000 |
Subsequent Event |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Increase in dividend rate, percentage | 11.00% |  |  |  |  |  |
Dividend declared per share (in USD per share) | $ 0.20 |  |  |  |  |  |

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