Commitments and Contingencies - Additional Information (Detail) Claim in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) Claim	Dec. 31, 2014 USD ($) Claim	Dec. 31, 2013 USD ($) Claim	Dec. 31, 2012 Claim
Other Commitments [Line Items]
Asbestos-related liability and asset measurement period	10 years
Asbestos Related Matters [Member]
Other Commitments [Line Items]
Outstanding Active Pending Asbestos Claims | Claim	37	62	79	96
Percentage of asbestos liability related to pending claims	28.00%
Percentage of Estimated Receivable from Insurers with A- or Better Credit Rating	83.00%
Percentage of Asbestos Asset Related to Coverage in Place Agreements	53.00%
Benefit from Settlement Agreement with Asbestos Insurers	$ 8.9	$ 2.2	$ 31.0
Continuing Operations [Member] | Asbestos Related Matters [Member]
Other Commitments [Line Items]
Change in Defense Cost Estimate for Asbestos Matters	$ (100.7)	$ 0.0	$ 0.0