Commitments and Contingencies - Roll forward of Asbestos Liability and Related Assets (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Changes in estimate during the period:
Noncurrent portion	$ 1,179.6	$ 1,255.0
Asbestos Related Matters [Member]
Liability for Asbestos and Environmental Claims, Net [Roll Forward]
Net Balance, Beginning	739.5	713.7
Changes in estimate during the period:
Continuing operations	63.8	56.8
Discontinued operations	0	(0.5)
Settlement Agreement	31.0	(11.4)
Net cash activity	(25.4)	(20.1)
Balance, Ending		739.5
Estimated asbestos exposure, net of expected recoveries from insurers and other responsible parties	746.9	739.5
Asbestos Related Matters [Member] | Liability [Member]
Liability for Asbestos and Environmental Claims, Net [Roll Forward]
Balance, Beginning	1,347.4	1,667.9
Changes in estimate during the period:
Continuing operations	11.4	6.6
Discontinued operations	0	(11.5)
Settlement Agreement	0	(245.2)
Net cash activity	(94.1)	(93.4)
Balance, Ending	1,264.7	1,347.4
Current portion	85.1	92.4
Noncurrent portion	1,179.6	1,255.0
Asbestos Related Matters [Member] | Asset [Member]
Liability for Asbestos and Environmental Claims, Net [Roll Forward]
Balance, Beginning	607.9	954.2
Changes in estimate during the period:
Continuing operations	(52.4)	(50.2)
Discontinued operations	0	11.0
Settlement Agreement		233.8
Increase in asbestos related assets	31.0
Net cash activity	68.7	73.3
Balance, Ending	517.8	607.9
Current portion	(84.5)	(82.6)
Noncurrent portion	$ 433.3	$ 525.3