Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Provision	$ 5.1	$ 8.1	$ 11.4
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	23.0	32.0	39.2
Impact of foreign currency exchange rate changes	(0.1)	(4.2)	(4.2)
Provision	5.1	8.1	11.4
Write-offs	(4.4)	(3.1)	(12.9)
Other	(3.4)	(9.8)	(1.5)
Ending balance	20.2	23.0	32.0
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	172.1	145.4	93.8
Provision	27.9	45.8	111.0
Changes attributable to acquisitions and dispositions	(20.5)	6.3	(1.2)
Changes impacting equity and other movements	0.9	(18.6)	(45.4)
Write-offs	(3.3)	(6.8)	(12.8)
Ending balance	$ 177.1	$ 172.1	$ 145.4