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Contract Balances (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]          
Contract asset $ 50.0   $ 50.0   $ 20.8
Revenue recognized, recorded in deferred revenue as of prior period $ 51.9 $ 33.8 $ 47.8 $ 36.6