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Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 26, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Class of Stock [Line Items] |  |  |  |  |
Shares repurchased during period (in shares) |  | 9.6 |  | 8.7 | 16.0
Shares repurchased, weighted average price per share (in dollars per share) |  | $ 12.47 |  | $ 13.13 | $ 10.95
Remaining authorized repurchase amount |  |  | $ 291,000 | $ 111,000 | $ 25,000
Common stock, dividends, per share, cash paid (in dollars per share) |  |  | $ 0.06 |  |
Cash dividends |  |  | $ 82,600 |  |
Subsequent Event |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common stock, dividends, per share, declared (in dollars per share) | $ 0.06 |  |  |  |

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