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Income (loss) per Share (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Nov. 15, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Exercise price (usd per share) | $ 39.76 | $ 39.88 | $ 40.02 | $ 40.02
Undistributed earnings (loss) allocated to participating securities, diluted | $ 100,000 | $ 0 | $ 1,500,000 |
Antidilutive weighted average shares (in shares) | 0.1 | 1.1 | 1.3 |
Notes Due 2023 | Convertible Notes |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Conversion price (usd per share) | $ 25.35 | $ 0 | $ 25.51 | $ 25.51

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