Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Dec. 31, 2012
Defined benefit plans	$ (258.8)		$ (258.8)		$ (273.9)	$ (274.5)
Defined benefit plans, other comprehensive income (loss), net unamortized gain (loss) arising during period, net of tax	10.7		8.0
Defined benefit plans, other comprehensive income (loss), reclassification, net gain (loss) recognized in net periodic benefit cost, net of tax	4.4		7.7
Defined benefit plans	15.1	(102.7)	15.7	(117.2)
Foreign currency translation adjustments	(6.7)		(6.7)		(9.2)	7.6
Foreign currency translation adjustments, other comprehensive income (loss) arising during period, net of tax	2.5		(14.3)
Foreign currency translation adjustments, other comprehensive income (loss), reclassification adjustment, net of tax	0		0
Foreign currency translation adjustments	2.5	4.9	(14.3)	(7.1)
Unrecognized gain on derivatives	0.1		0.1		0.7	2.3
Unrecognized gain on derivatives, other comprehensive income (loss), gain (loss) arising during period, net of tax	(0.1)		0.4
Unrecognized gain on derivatives, other comprehensive income (loss), reclassification adjustment, net of tax	(0.5)		(2.6)
Change in derivatives	(0.6)	2.2	(2.2)	7.6
Accumulated other comprehensive income (loss), net of tax	(265.4)		(265.4)		(282.4)	(264.6)
Other comprehensive income (loss) arising during period, total, net of tax	13.1		(5.9)
Other comprehensive income (loss), reclassification adjustments, total, net of tax	3.9		5.1
Net current period other comprehensive income (loss)	17.0	(95.6)	(0.8)	(116.7)
Other comprehensive (income) loss, pension and other postretirement benefit plans, before reclassification adjustments, tax	(5.6)		(4.0)
Other comprehensive (income) loss, reclassification adjustment from AOCI, pension and other postretirement benefit plans, tax	(2.3)		(4.0)
Cost of Sales [Member]
Defined benefit plans, other comprehensive income (loss), reclassification, net gain (loss) recognized in net periodic benefit cost, net of tax	1.2		3.5
Selling, General and Administrative Expenses [Member]
Defined benefit plans, other comprehensive income (loss), reclassification, net gain (loss) recognized in net periodic benefit cost, net of tax	$ 3.2		$ 4.2