Income Taxes - Reconciliation of Income Taxes with Amounts Computed by Applying Federal Tax Rate (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Income Tax Disclosure [Abstract]
Federal income tax expense (benefit) computed at statutory tax rate of 35%	$ 5.1		$ 33.8		$ 8.1
Additional taxes or credits from:
State and local income taxes, net of federal income tax effect	3.2		4.7		4.5
Non-deductible expenses and non-taxable income	5.1		1.9		(1.1)
Foreign income not includable in federal taxable income	2.0		(0.8)		6.3
Effect of acquisition related elections and settlements	(2.2)	[1]	(7.1)	[1]
Valuation allowance changes (net)	(76.8)	[2]	(41.0)	[2]	(30.1)	[2]
All other, net	(1.8)		1.3		0.8
Total income tax provision (benefit)	$ (65.4)		$ (7.2)		$ (11.5)

[1] Includes a $8.5 million deferred tax benefit related to a tax election corresponding with the acquisition of Turret, for which an offsetting valuation allowance was also recorded in 2012.

[2] The 2012 change in valuation allowance includes a benefit from the use of U.S. federal and state net operating loss carryforwards totaling approximately $22 million.