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Long-lived Assets (Schedule of Intangible Assets Subject to Amortization, Net) (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]    
Gross carrying amount $ 3,319.7 $ 3,498.7
Accumulated amortization (701.9) (612.7)
Net carrying amount 2,617.8 2,886.0
Customer relationships    
Property, Plant and Equipment [Line Items]    
Gross carrying amount 2,287.9 2,426.6
Accumulated amortization (327.5) (246.4)
Net carrying amount 1,960.4 2,180.2
Other    
Property, Plant and Equipment [Line Items]    
Gross carrying amount 1,031.8 1,072.1
Accumulated amortization (374.4) (366.3)
Net carrying amount $ 657.4 $ 705.8