Change In Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income and Redeemable Noncontrolling Interest (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended						6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Common Stock	Dec. 31, 2012 Common Stock	Jun. 30, 2013 Capital in Excess of Par Value	Dec. 31, 2012 Capital in Excess of Par Value	Jun. 30, 2013 Accumulated Deficit	Jun. 30, 2013 Foreign Currency Translation	Jun. 30, 2013 Pension Benefits	Jun. 30, 2013 Unrealized Gain (Loss) on Available- For-Sale Investments	Jun. 30, 2013 Noncontrolling Interest	Jun. 30, 2013 Redeemable Noncontrolling Interest
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			$ (282.2)				$ 71.3	$ 71.3	$ (102.5)	$ (5.4)	$ (251.6)	$ 3.3	$ 2.7	$ 1.7
Beginning Balance, shares			100		100	100
Net income (loss)	0.2	29.4	5.1	66.5					9.0				(3.7)	(0.2)
Net income (loss)			5.3
Foreign currency translation			(10.5)							(10.7)			0.2
Changes in defined benefit pension and other post-retirement benefit plans, net of tax provision			2.3								2.3
Unrealized gain on available-for-sale investment			1.4									1.4
Ending Balance	$ (283.7)		$ (283.7)				$ 71.3	$ 71.3	$ (93.5)	$ (16.1)	$ (249.3)	$ 4.7	$ (0.8)	$ 1.5
Ending Balance, shares	100		100		100	100