Dispositions (Identifiable Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Jun. 01, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Current assets	$ 6,297.4	$ 5,940.5
Property and equipment, net	6,504.5	6,981.5
Goodwill	9,316.1	9,523.4		$ 9,965.7
Intangible assets subject to amortization, net	2,342.4	2,342.5
Other assets, net	3,578.5	2,426.1
Current portion of debt and finance lease obligations	(799.7)	(850.3)
Long-term debt and finance lease obligations	(12,963.5)	(13,974.8)
Other long-term liabilities	$ (1,791.2)	$ (2,033.3)
Total fair value of the net assets of the VMO2 JV			$ 1,478.8
VMO2 JV
Schedule of Equity Method Investments [Line Items]
Current assets			4,186.7
Property and equipment, net			12,523.2
Goodwill			29,455.4
Intangible assets subject to amortization, net			13,274.6
Other assets, net			4,163.5
Current portion of debt and finance lease obligations			(4,352.5)
Other accrued and current liabilities			(5,780.8)
Long-term debt and finance lease obligations			(21,879.2)
Other long-term liabilities			(2,170.9)
Total fair value of the net assets of the VMO2 JV			$ 29,420.0