Schedule II (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 30.7	$ 29.6	$ 30.5
Additions charged to profit and loss	24.6	27.2	13.3
Write-offs	(23.5)	(23.0)	(13.8)
Foreign currency impact	(2.2)	(3.1)	(0.4)
Other	(8.6)	0	0
Balance at end of year	21.0	30.7	29.6
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	42.1	36.6	31.6
Additions charged to profit and loss	12.3	5.5	4.3
Write-offs	(3.5)	0	0
Foreign currency impact	(3.0)	0	0.7
Other	0	0	0
Balance at end of year	$ 47.9	$ 42.1	$ 36.6