Schedule II (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 30.5	$ 27.5	$ 21.1
Additions charged to profit and loss	13.3	21.8	26.3
Write-offs	(13.8)	(16.8)	(22.2)
Foreign currency impact	(0.4)	(1.6)	0
Other	0	(0.4)	2.3
Balance at end of year	29.6	30.5	27.5
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	31.6	29.7	20.2
Additions charged to profit and loss	4.3	3.6	5.1
Write-offs	0	0	0
Foreign currency impact	0.7	(1.7)	(0.2)
Other	0	0	4.6
Balance at end of year	$ 36.6	$ 31.6	$ 29.7