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Reconciliation of Federal Tax Rate to Effective Tax Rate (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Taxes computed at the federal rate | $ 2.2 | $ (311.2) | $ 49.7
Goodwill | 2.6 | 50.4 | 0.0
State and local income taxes, net of federal tax benefit | 0.4 | (0.2) | 0.3
Valuation allowance | 17.6 | 335.5 | (89.1)
Repatriation of foreign earnings (GILTI ) | 2.0 | 0.2 | 3.5
Restructuring | 0.0 | 0.0 | 4.2
Recognition of stranded deferred tax balance | 3.9 | 0.0 | 0.0
Foreign earnings taxed at different rate | 3.0 | 1.7 | 2.7
Withholding taxes | 3.4 | 2.1 | 2.7
Preferential tax rate | (6.2) | (4.6) | (4.1)
Other | (2.1) | 3.8 | 1.6
Income tax provision (benefit) | $ 26.8 | $ 77.7 | $ (28.5)

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