CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Comprehensive income (loss):
Net income (loss)	$ (4.4)	$ 35.1
Other comprehensive income (loss), before tax:
Cumulative translation adjustment	(20.2)	24.3
Derivative financial instruments	8.5	0.6
Accrued benefit cost	1.9	1.8
Unrealized gain on investment	0.2	1.5
Total other comprehensive income (loss), before tax	(9.6)	28.2
Income tax provision related to other comprehensive income	3.5	1.8
Comprehensive income (loss)	$ (17.5)	$ 61.5