Commitments and Contingencies - Activity Related to Asbestos Claims (Detail) (Asbestos Related Matters [Member])	12 Months Ended
	Dec. 31, 2013 Claim	Dec. 31, 2012 Claim	Dec. 31, 2011 Claim
Number of Pending Claims [Roll Forward]
Asbestos liability and related asset measurement period	10 years
Pending claims - Beginning	96,000	105,000	104,000
New claims	5,000	4,000	5,000
Settlements	(3,000)	(1,000)	(2,000)
Dismissals	(19,000)	(12,000)	(2,000)
Pending claims - Ending	79,000	96,000	105,000
Inactive [Member]
Number of Pending Claims [Roll Forward]
Pending claims - Beginning	29,000
Dismissals	(12,000)		(10,000)
Pending claims - Ending	18,000		39,000
Active [Member]
Number of Pending Claims [Roll Forward]
Pending claims - Ending	61,000	67,000	66,000