Income Taxes - Deferred Tax Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets:
Accruals	$ 64.5	$ 65.2
Asbestos	272.7	296.7
Employee benefits	106.6	137.2
Credit carryforwards	47.2	46.1
Loss carryforwards	125.2	119.3
Other	34.4	40.1
Subtotal	650.6	704.6
Valuation allowance	(135.3)	(536.7)
Net deferred tax assets	515.3	167.9
Deferred Tax Liabilities:
Undistributed earnings	(82.3)	(71.4)
Intangibles	(58.8)	(59.2)
Accelerated depreciation	(25.8)	(25.0)
Investment	(0.4)	(0.7)
Total deferred tax liabilities	(167.3)	(156.3)
Net deferred tax assets	$ 348.0	$ 11.6