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Share Repurchases (Narrative) (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 | Feb. 19, 2020 | Dec. 31, 2019 | Feb. 25, 2014
Equity [Abstract] |  |  |  |
Stock repurchase program, authorized amount |  | $ 350,000,000 |  | $ 350,000,000
Stock repurchase program, remaining authorized repurchase amount | $ 225,000,000 |  | $ 160,000,000 |
Stock repurchase program, increase in authorized amount |  | $ 190,000,000 |  |
Percentage of employee's earnings withheld | 10.00% |  |  |

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- Definition Employee Stock Purchase Plan, Percent Of Earnings + References No definition available. + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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