Accounts Receivable (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Accounts Receivable, Net, Current [Abstract]
Trade				$ 595.4	$ 555.7
Other				70.4	53.9
Total accounts receivable				665.8	609.6
Allowance for doubtful accounts	$ (30.2)	$ (11.2)	$ (11.2)	(30.2)	(10.1)
Accounts receivable, net				$ 635.6	$ 599.5
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of year	10.1	11.2	8.3
Provision for uncollectible accounts receivable(a)	22.8	1.4	5.0
Write offs less recoveries	(2.2)	(0.9)	(1.0)
Foreign currency exchange effects	(0.5)	(1.6)	(1.1)
End of year	30.2	$ 10.1	$ 11.2
Internal Loss AR Rebuild
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Provision for uncollectible accounts receivable(a)	$ 19.2