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Discontinued Operations and Disposal Groups - Cash Flow Information (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Cash Flow Information, Discontinued Operations    
Cash received from sale of the Oxford business $ 9.8 $ 499.1
Cash received from sale of discontinued operations   495.2
Oxford Business | Discontinued Operations    
Cash Flow Information, Discontinued Operations    
Net cash provided by operating activities   $ 8.2