Long-lived Assets (Schedule of Intangible Assets Subject to Amortization, Net) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Gross carrying amount	$ 3,326.9	$ 3,483.7
Accumulated amortization	(916.9)	(603.8)
Net carrying amount	2,410.0	2,879.9
Customer relationships
Property, Plant and Equipment [Line Items]
Gross carrying amount	2,287.7	2,411.6
Accumulated amortization	(502.2)	(237.5)
Net carrying amount	1,785.5	2,174.1
Other
Property, Plant and Equipment [Line Items]
Gross carrying amount	1,039.2	1,072.1
Accumulated amortization	(414.7)	(366.3)
Net carrying amount	$ 624.5	$ 705.8