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Capital Structure - Changes in Common Shares issued and Outstanding (Details) - shares | 2 Months Ended | 12 Months Ended | 14 Months Ended
--- | --- | --- | ---
Feb. 24, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Feb. 24, 2022
Capital Structure |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 10,000,000 | 10,000,000 | 10,000,000 | 10,000,000 |
Common stock, shares authorized (in shares) |  | 500,000,000 | 500,000,000 | 500,000,000 | 500,000,000 |
Increase (Decrease) in Stockholders' Equity (in shares) |  |  |  |  |  |
Beginning balance, common shares issued (in shares) | 423,547,174 | 423,057,848 |  |  |  | 423,057,848
Beginning balance, treasury shares (in shares) | (179,793,275) | (178,825,915) |  |  |  | (178,825,915)
Beginning balance, common shares outstanding (in shares) | 243,753,899 | 244,231,933 |  |  |  | 244,231,933
Share repurchases (in shares) |  | (1,084,752) | (6,062,783) | (36,301,882) |  |
Ending balance, common shares issued (in shares) |  | 423,547,174 | 423,057,848 |  |  |
Ending balance, treasury shares (in shares) |  | (179,793,275) | (178,825,915) |  |  |
Ending balance, common shares outstanding (in shares) |  | 243,753,899 | 244,231,933 |  |  |
Equivalent shares purchased in lieu of tax withholding on equity compensation issuances |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity (in shares) |  |  |  |  |  |
Share repurchases (in shares) |  | (249,013) | (711,248) | (936,928) |  |
Subsequent Event |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity (in shares) |  |  |  |  |  |
Share repurchases (in shares) | (1,889,151) |  |  |  |  |
Subsequent Event | Equivalent shares purchased in lieu of tax withholding on equity compensation issuances |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity (in shares) |  |  |  |  |  |
Share repurchases (in shares) | (130,674) |  |  |  |  |
Common Stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity (in shares) |  |  |  |  |  |
Beginning balance, common shares issued (in shares) | 423,547,174 | 423,057,848 | 421,890,790 | 420,288,886 |  | 423,057,848
Beginning balance, common shares outstanding (in shares) | 243,753,899 | 244,231,933 | 248,996,189 | 283,650,039 |  | 244,231,933
Shares issued under ESPP (in shares) |  | 117,392 | 131,469 | 46,128 |  |
Shares issued from LTIP (in shares) |  | 489,326 | 1,167,058 | 1,601,904 |  |
Ending balance, common shares issued (in shares) |  | 423,547,174 | 423,057,848 | 421,890,790 | 420,288,886 |
Ending balance, common shares outstanding (in shares) |  | 243,753,899 | 244,231,933 | 248,996,189 | 283,650,039 |
Common Stock | Subsequent Event |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity (in shares) |  |  |  |  |  |
Shares issued from LTIP (in shares) | 288,491 |  |  |  |  |
Ending balance, common shares issued (in shares) | 423,835,665 |  |  |  |  | 423,835,665
Ending balance, common shares outstanding (in shares) | 242,153,239 |  |  |  |  | 242,153,239
Treasury Stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity (in shares) |  |  |  |  |  |
Beginning balance, treasury shares (in shares) | (179,793,275) | (178,825,915) | (172,894,601) | (136,638,847) |  | (178,825,915)
Shares issued under ESPP (in shares) |  | 117,392 | 131,469 | 46,128 |  |
Shares issued from LTIP (in shares) |  | 0 | 0 | 0 |  |
Share repurchases (in shares) |  | (1,084,752) | (6,062,783) | (36,301,882) |  |
Ending balance, treasury shares (in shares) |  | (179,793,275) | (178,825,915) | (172,894,601) | (136,638,847) |
Treasury Stock | Subsequent Event |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity (in shares) |  |  |  |  |  |
Shares issued from LTIP (in shares) | 0 |  |  |  |  |
Share repurchases (in shares) | (1,889,151) |  |  |  |  |
Ending balance, treasury shares (in shares) | (181,682,426) |  |  |  |  | (181,682,426)

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