CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Comprehensive income:
Net income (loss)	$ 52.1	$ 76.4	$ 55.8	$ 72.0
Other comprehensive income (loss), before tax:
Cumulative translation adjustment	13.5	(29.0)	5.7	(49.2)
Derivative financial instruments	(7.9)	7.8	(10.0)	16.3
Accrued benefit cost	1.1	1.8	2.3	3.7
Unrealized gain on investment	4.4		4.4	0.2
Total other comprehensive income (loss), before tax	11.1	(19.4)	2.4	(29.0)
Income tax (provision) benefit related to other comprehensive income (loss)	0.4	(3.4)	0.8	(6.9)
Comprehensive income (loss)	$ 63.6	$ 53.6	$ 59.0	$ 36.1