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Contract Assets and Deferred Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]          
Contract assets - current $ 39.9   $ 39.9   $ 42.0
Contract assets - long-term 15.0   15.0   17.4
Deferred revenue - current (227.5)   (227.5)   (253.2)
Deferred revenue - long-term (137.4)   (137.4)   $ (150.7)
Revenue recognized that was included in deferred revenue at the beginning of the period $ 61.9 $ 63.8 $ 144.8 $ 162.9