Commitments and Contingencies - Rollforward of Environmental Liability and Related Assets (Detail) (Environmental Related Matters [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Environmental Liability and Related Assets [Roll Forward]
Environmental liability - Beginning balance	$ 83.8	$ 101.8
Environmental liability - Ending balance	82.9	83.8
Continuing Operation, Net	8.6	(3.7)
Accruals added during the period for new matters, Net	0.5	0
Discontinued operations, Net	1.5	(2.9)
Net cash activity, Net	(11.6)	(11.5)
Accruals added during the period for new matters, Net	0.1	0.1
Liability [Member]
Environmental Liability and Related Assets [Roll Forward]
Environmental liability - Beginning balance	96.1	101.8
Continuing operations, Liability	8.5	7.1
Discontinued operations, Liability	1.5	(1.4)
Accruals added during the period for new matters, Liability	0.5
Net cash activity, Liability	(12.1)	(11.5)
Foreign currency, Liability	0.1	0.1
Environmental liability - Ending balance	94.6	96.1
Asset [Member]
Environmental Liability and Related Assets [Roll Forward]
Environmental liability - Asset, Beginning balance	12.3
Continuing operations, Asset	(0.1)	10.8
Discontinued operations, Asset	0	1.5
Accruals added during the period for new matters, Assets	0	0
Net cash activity, Asset	(0.5)
Foreign currency, Asset
Environmental liability - Asset, Ending balance	$ 11.7	$ 12.3