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Stockholders' Equity - Additional Information (Detail) - USD ($) | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |  |
Dividend declared and paid per share |  |
Authorized to purchase of common stock under the stock repurchase program | $ 535,000,000.0 |
Repurchase of common stock | 0 | 0
Cumulative repurchase of common stock | 16,300,000 |
Aggregate cost of repurchase of common stock | $ 474,900,000 |

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