Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	$ (160.7)	$ 181.1	$ 140.8	$ 85.8
Hedge instruments	1.7	(16.0)	(37.2)	(50.5)
Defined benefit postretirement plans	(227.3)	(181.5)	(225.8)	(187.2)
Other	2.7	2.4	0.9	1.1
Accumulated other comprehensive loss	(383.6)	(14.0)	(121.3)	(150.8)
Comprehensive (loss) income before reclassifications, Foreign currency translation adjustments	(341.8)	40.3	38.2
Comprehensive (loss) income before reclassifications, Hedge instruments	26.7	19.6	30.3
Comprehensive (loss) income before reclassifications, Defined benefit postretirement plans	(73.8)	52.5	(60.8)
Comprehensive (loss) income before reclassifications, Other	0.3	1.5	(0.2)
Comprehensive (loss) income before reclassifications, Total	(388.6)	113.9	7.5
Income taxes associated with comprehensive (loss) income before reclassifications, Hedge instruments	(9.6)	(8.1)	(10.4)
Income taxes associated with comprehensive (loss) income before reclassifications, Defined benefit postretirement plans	23.3	(15.8)	16.2
Income taxes associated with comprehensive (loss) income before reclassifications, Total	13.7	(23.9)	5.8
Reclassification from accumulated other comprehensive (loss) income, Foreign currency translation adjustments			16.8
Reclassification from accumulated other comprehensive (loss) income, Hedge instruments	0.6	12.6	(8.8)
Reclassification from accumulated other comprehensive (loss) income, Defined benefit postretirement plans	6.8	11.2	9.1
Reclassification from accumulated other comprehensive (loss) income, Total	7.4	23.8	17.1
Income taxes reclassified into net earnings, Hedge instruments		(2.9)	2.2
Income taxes reclassified into net earnings, Defined benefit postretirement plans	(2.1)	(3.6)	(3.1)
Income taxes reclassified into net earnings, Total	$ (2.1)	$ (6.5)	$ (0.9)