Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Net income	$ 76.1	$ 79.8	$ 92.6
Other Comprehensive Income (Loss), net of tax:
Foreign currency translation adjustments	5.1	9.9	(17.6)
Less: Reclassification adjustment for realized translation adjustments	(1.1)	0	(1.0)
Unrealized (losses) gains on derivative instruments	(7.1)	(0.4)	0.6
Less: Reclassification adjustment for losses (gains) on derivative instruments included in net income	0.4	(1.4)	(5.5)
Net gain (loss) from postretirement benefit plans	8.4	(4.5)	(1.1)
Less: Amortization of postretirement benefit plans' costs included in net periodic benefit cost	4.7	5.5	(1.4)
Other Comprehensive Income (Loss)	10.4	9.1	(26.0)
Comprehensive Income	$ 86.5	$ 88.9	$ 66.6