Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 64.3	$ 44.7	$ 72.3	$ 38.6
Other comprehensive loss
Foreign currency translation adjustments, net	(24.4)	(24.8)	(28.4)	(9.1)
Reclassification of foreign currency translation gains into earnings	0	(3.7)	(41.1)	(3.7)
Net change in pension and post-retirement liability	0.3	7.0	1.2	6.5
Change in fair value of available-for-sale marketable equity securities	(3.2)	1.5	(4.7)	1.8
Net change in fair value of derivatives	(8.1)	(5.4)	(13.2)	3.4
Reclassification of derivative losses into earnings	1.6	1.6	1.2	3.5
Other comprehensive (loss) income before income taxes	(33.8)	(23.8)	(85.0)	2.4
Tax benefit (expense)	2.3	(1.2)	4.2	(4.9)
Other comprehensive loss, net of tax	(31.5)	(25.0)	(80.8)	(2.5)
Comprehensive income (loss)	$ 32.8	$ 19.7	$ (8.5)	$ 36.1