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Deferred Costs (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Deferred costs $ 64.2 $ 45.3
Amortization expense for deferred costs 34.1 21.0
Impairment loss $ 0.0 $ 0.0