Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 44.7	$ 45.0	$ 38.6	$ 37.8
OTHER COMPREHENSIVE INCOME, net of tax:
Foreign currency translation adjustments, net	(20.4)	11.5	(5.1)	27.7
Reclassification of foreign currency translation gains into earnings	(3.7)		(3.7)
Derivatives, net of tax (benefit) expense of $(1.3) and $2.5 for the three and six months ended June 30, 2012, respectively, and $(1.8) and $(4.4) for the three and six months ended June 30, 2011, respectively	(2.5)	(0.8)	2.7	(0.5)
Reclassification of derivative losses (gains) into earnings	1.6	(4.8)	3.6	(10.1)
Other comprehensive (loss) income	(25.0)	5.9	(2.5)	17.1
Comprehensive income	$ 19.7	$ 50.9	$ 36.1	$ 54.9