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Discontinued Operations - Liabilities of Discontinued Operations (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]    
Accounts payable and accrued expenses $ 45.0 $ 62.3
Other noncurrent liabilities 59.0 91.4
Total liabilities classified as discontinued operations $ 104.0 $ 153.7