Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Pension and other post-retirement benefits, beginning balance	$ (96.4)
Pension and other post-retirement benefits, other comprehensive gain (loss) before reclassification	(8.8)
Pension and other post-retirement benefits, amounts reclassified from accumulated other comprehensive income	1.4
Pension and other post-retirement benefits, ending balance	(103.8)
Derivatives designated as hedges, beginning balance	0.0
Derivatives designated as hedges, other comprehensive gain (loss) before reclassification	(0.8)
Derivatives designated as hedges, ending balance	(0.8)
Foreign currency translation, beginning balance	(20.7)
Foreign currency translation, other comprehensive gain (loss) before reclassification	(21.9)
Foreign currency translation, ending balance	(42.6)
Total, beginning balance	(117.1)
Total, other comprehensive gain (loss) before reclassification	(31.5)
Total, amounts reclassified from accumulated other comprehensive income	1.4
Total, ending balance	$ (147.2)