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Stockholders' Equity - Additional Information (Details) - USD ($) |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 16, 2021 | Mar. 10, 2021 | Jan. 28, 2021 | Jan. 26, 2021 | Mar. 11, 2020 | Mar. 10, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Oct. 20, 2021 | Feb. 02, 2021 | Jan. 27, 2021 | Dec. 31, 2020 | Jan. 22, 2020
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock dividend (in usd per share) |  |  |  |  |  |  | $ 0.03 | $ 0.03 |  |  |  | $ 0.09 | $ 0.09 |  |  |  |  |
Aggregate purchase price (not to exceed) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000,000
Common stock repurchased, amount |  |  |  |  |  | $ 525,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Common stock repurchased (in shares) |  | 45,000,000 | 13,000,000 |  | 45,000,000 |  |  |  | 13,018,585 |  | 0 | 84,528,256 | 47,736,847 |  |  |  |  |
Average purchase price per share (in usd per share) |  |  |  |  |  |  |  |  | $ 18.83 |  | $ 7.05 | $ 14.70 | $ 10.97 |  |  |  |  |
Remaining authority under the share repurchase program |  |  |  |  |  |  | $ 51,000,000 |  | $ 51,000,000 |  |  | $ 51,000,000 |  |  |  |  |  |
Common stock, par value (in dollars per share) |  |  |  |  |  |  | $ 0.20 |  | $ 0.20 |  |  | $ 0.20 |  |  |  |  | $ 0.20 |
Common stock repurchased |  |  |  |  |  |  |  |  |  |  |  | $ 1,276,681,000 | $ 558,167,000 |  |  |  |  |
Common stock repurchased and cancelled (in shares) | 28,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock repurchased (in shares) |  |  |  |  |  |  |  |  | 13,018,585 |  |  | 56,025,796 | 47,736,847 |  |  |  |  |
Tender Offer | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchase cancelled, common stock balance |  |  |  |  |  |  |  |  |  |  |  | $ 6,000,000 |  |  |  |  |  |
Tender Offer | Additional Paid-In Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchase cancelled, common stock balance |  |  |  |  |  |  |  |  |  |  |  | $ 466,000,000 |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock closing price (in usd per share) |  |  |  |  |  |  | $ 17.60 |  | $ 17.60 |  |  | $ 17.60 |  |  |  |  |  |
Common Stock | 2020 Share Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock repurchased, amount |  |  |  |  |  |  |  |  |  | $ 75,000,000 |  |  |  |  |  |  |  |
Common stock repurchased (in shares) |  |  |  | 58,000,000 |  |  |  |  |  | 4,000,000 |  |  |  |  |  |  |  |
Treasury stock, additional shares received |  |  |  | 13,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average purchase price per share (in usd per share) |  |  |  | $ 9.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | 2021 Share Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate purchase price (not to exceed) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,250,000,000 |  |
Common stock repurchased, amount |  |  |  |  |  |  |  |  | $ 244,000,000 |  |  | $ 1,200,000,000 |  |  |  |  |  |
Common stock repurchased (in shares) |  |  |  |  |  |  |  |  | 13,000,000 |  |  | 66,800,000 |  |  |  |  |  |
Remaining authority under the share repurchase program |  |  |  |  |  |  | $ 51,000,000 |  | $ 51,000,000 |  |  | $ 51,000,000 |  |  |  |  |  |
Common Stock | 2021 Share Repurchase Program | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in amount of common stock that may be repurchased |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000,000 |  |  |  |
Common Stock | Tender Offer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate purchase price (not to exceed) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |  |  |
Common stock repurchased (in shares) |  | 28,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average purchase price per share (in usd per share) |  | $ 16.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.20 |  |  |
Common stock repurchased | $ 472,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | Rule 10b5-1 Trading Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock repurchased, amount |  |  |  |  |  |  |  |  | $ 244,000,000 |  |  | $ 804,000,000 |  |  |  |  |  |
Common stock repurchased (in shares) |  |  |  |  |  |  |  |  | 13,000,000 |  |  | 42,600,000 |  |  |  |  |  |

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