Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 159.9	$ 72.8	$ 98.2
Additions Charged to Costs and Expenses	16.0	16.9	14.2
Additions Charged to Other Accounts	0.0	77.3	0.0
Deductions	(21.4)	(7.1)	(39.6)
Ending balance	154.5	159.9	72.8
Valuation allowance for deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	443.6	603.5	806.0
Additions Charged to Costs and Expenses	82.2	39.0	36.8
Additions Charged to Other Accounts	260.8	0.0	0.0
Deductions	(6.2)	(198.9)	(239.3)
Ending balance	$ 780.4	$ 443.6	$ 603.5