Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019		Jan. 01, 2020
Accounting Standards Update 2016-13 | Trade receivables
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Accounts Receivable, after Allowance for Credit Loss, Current								$ 2.0
Trade receivables allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of  Period		$ 40.2	[1]	$ 57.4		$ 58.7
Additions, Charged to Costs and Expenses		17.0	[1]	38.0		27.7
Additions, Charged to Other Accounts		(10.8)	[1],[2]	1.3		3.5	[2]
Deductions and Adjustments		(8.3)	[1],[3]	(56.5)		(32.5)	[3]
Balance at End of Period		38.1	[1]	40.2	[1]	57.4
Valuation allowance for deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of  Period		815.1		729.1		496.6
Additions, Charged to Costs and Expenses		129.7		104.4		184.9
Additions, Charged to Other Accounts	[2]	(12.0)		(11.3)		0.0
Deductions and Adjustments	[3]	2.7		(7.1)		47.6
Balance at End of Period		$ 935.5		$ 815.1		$ 729.1

[1] On January 1, 2020, we adopted ASU 2016-13, resulting in a $2.0 million increase to our trade receivables allowance for credit losses.

[2] Additions charged to other accounts” includes translation adjustments.

[3] “Deductions and adjustments” includes write-offs, net of recoveries, increases in allowances offset by increases to deferred tax assets, and reductions in the allowances credited to expense.(c)On January 1, 2020, we adopted ASU 2016-13, resulting in a $2.0 million increase to our trade receivables allowance for credit losses.