CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Comprehensive income:
Net income (loss)	$ 76.9	$ 90.7	$ 195.2	$ 183.6
Other comprehensive income (loss), before tax:
Cumulative translation adjustment	25.6	(68.3)	9.5	(20.6)
Derivative financial instruments	(7.6)	12.6	(10.6)	9.5
Accrued benefit cost	1.5	1.4	4.8	8.8
Unrealized gain (loss) on investment	1.0	(0.4)	1.0	(0.4)
Total other comprehensive income (loss), before tax	20.5	(54.7)	4.7	(2.7)
Income tax (provision) benefit related to other comprehensive income (loss)	1.5	(4.0)	1.1	(6.1)
Comprehensive income	$ 98.9	$ 32.0	$ 201.0	$ 174.8