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Stockholders' Equity - Narrative (Details) - USD ($) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 28, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2016 | Nov. 30, 2019 | Aug. 31, 2019
Equity [Line Items] |  |  |  |  |  |  |
Preferred stock authorized (in shares) |  | 25,000,000 |  |  |  |  |
Preferred stock issued (in shares) |  | 0 | 0 |  |  |  |
Class A common stock, par value (in USD per share) |  | $ 0.01 | $ 0.01 |  |  |  |
Class A common stock issued (in shares) |  | 335,561,345 | 334,752,283 |  |  |  |
Class A common stock outstanding (in shares) |  | 335,561,345 | 334,752,283 |  |  |  |
Shares repurchased during the period, value |  | $ 50,028,000 | $ 145,137,000 | $ 161,034,000 |  |  |
Capacity remaining under current stock repurchase program |  | $ 350,000,000.0 |  |  |  |  |
2016 Program |  |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |  |
Authorized share repurchase term |  |  |  |  | 3 years |  |
2019 Program |  |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |  |
Authorized share repurchase term | 3 years |  |  |  |  |  |
Class A common stock |  |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |  |
Class A common stock, shares authorized (in shares) |  | 525,000,000 | 525,000,000 |  |  |  |
Class A common stock, par value (in USD per share) |  | $ 0.01 |  |  |  |  |
Class A common stock issued (in shares) |  | 335,561,345 | 334,752,283 |  |  |  |
Class A common stock outstanding (in shares) |  | 335,561,345 |  |  |  |  |
Shares repurchased during the period, value |  | $ 11,000 | $ 31,000 | $ 40,000 |  |  |
Repurchase of common stock (in shares) |  | 1,050,084 | 3,080,907 | 3,980,656 |  |  |
Class A common stock | 2016 Program |  |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |  |
Authorized share repurchase amount |  |  |  |  | $ 250,000,000.0 |  |
Shares repurchased during the period, value |  |  | $ 45,100,000 | $ 161,000,000.0 |  |  |
Repurchase of common stock (in shares) |  |  | 1,144,449 | 3,980,656 |  |  |
Average price per share (in USD per share) |  |  | $ 39.38 | $ 40.43 |  |  |
Class A common stock | 2019 Program |  |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |  |
Authorized share repurchase amount | $ 300,000,000.0 |  |  |  |  | $ 500,000,000.0 |
Shares repurchased during the period, value |  | $ 50,000,000.0 | $ 100,000,000.0 |  |  |  |
Repurchase of common stock (in shares) |  | 1,050,084 | 1,936,458 |  |  |  |
Average price per share (in USD per share) |  | $ 47.62 | $ 51.64 |  |  |  |
Authorized share additional repurchase amount |  |  |  |  |  | $ 100,000,000.0 | $ 100,000,000.0

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