Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 64.3	$ 29.4	$ 136.6	$ 68.0
Other comprehensive income (loss):
Foreign currency translation adjustments, net	6.7	25.4	(21.6)	16.2
Reclassification of foreign currency translation gains into earnings	0	0	(41.1)	(3.7)
Net change in pension and post-retirement liabilities	(0.7)	(0.9)	0.6	5.6
Change in fair value of available-for-sale marketable equity securities	(1.5)	(0.3)	(6.2)	1.5
Net change in fair value of derivatives	5.1	5.2	(8.3)	7.3
Reclassification of derivative losses into earnings	2.1	2.8	3.3	7.6
Other comprehensive income (loss) before income taxes	11.7	32.2	(73.3)	34.5
Tax (expense) benefit	(2.5)	(2.7)	1.7	(7.6)
Other comprehensive income (loss), net of tax	9.2	29.5	(71.6)	26.9
Comprehensive income	$ 73.5	$ 58.9	$ 65.0	$ 94.9