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Common Stock - Additional Information (Details) shares in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($)
Schedule Of Common Stock [Line Items] |  |  |
Senior leverage ratio | 3.0 |  |
Cost of shares repurchased to settle statutory employee withholding related to vesting of stock awards | $ 59,604,000 | $ 27,163,000 | $ 17,484,000
Share Repurchase Program |  |  |
Schedule Of Common Stock [Line Items] |  |  |
Stock repurchase program authorized to be repurchased (in shares) | shares | 2.3 | 1.2 |
Payment for acquisition of treasury stock | $ 57,600,000 | $ 25,300,000 |
Shares repurchased to settle statutory employee withholding related to vesting of stock awards (in shares) | shares | 0.1 | 0.1 |
Cost of shares repurchased to settle statutory employee withholding related to vesting of stock awards | $ 2,000,000.0 | $ 1,900,000 |
Maximum |  |  |
Schedule Of Common Stock [Line Items] |  |  |
Annual share repurchase limit | $ 35,000,000.0 |  |

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