Commitments and Contingencies - Summary of Net Asbestos Charges (Detail) (Asbestos Related Matters [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Asbestos Related Contingencies [Line Items]
Net asbestos charge	$ 32.8	$ 45.8	$ 94.0
Continuing Operations [Member]
Asbestos Related Contingencies [Line Items]
Asbestos provision	63.3	53.8	59.5
Asbestos remeasurement, net	0.5	2.9	40.9
Settlement Agreement	(31.0)	(5.8)	0
Net asbestos charge	32.8	50.9	100.4
Discontinued Operations [Member]
Asbestos Related Contingencies [Line Items]
Asbestos provision	0	0.5	2.8
Asbestos remeasurement, net		0	(9.2)
Settlement Agreement	0	(5.6)	0
Net asbestos charge	$ 0	$ (5.1)	$ (6.4)