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Goodwill and Intangible Assets Amortization Expense (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Sep. 30, 2019
Mar. 31, 2019
Estimated amortization expense of finite-lived intangible assets      
2020 - remaining $ 161.0    
2021 210.2    
2022 204.8    
2023 203.8    
2024 203.8    
Amortization expense of intangible assets $ 54.9   $ 55.4
CANADA      
Estimated amortization expense of finite-lived intangible assets      
Impairments   $ 668.3