Statement of Consolidated Shareholders' Deficit - 9 months ended Sep. 30, 2015 - USD ($) $ in Millions	Total	Preferred Stock [Member]	Common Stock [Member]	Capital Surplus [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock, At Cost [Member]
Beginning balance at Dec. 31, 2014				$ 2,290.9	$ (2,240.0)	$ (432.8)	$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	$ 18.5			1.4
Issuance of equity upon conversion of Series B Notes				18.5
Net income					24.2
Reclassification of net pension actuarial losses to net income, net of tax						12.0
Foreign currency translation adjustments						(9.1)
Ending balance at Sep. 30, 2015	$ (427.3)	$ 0.0	$ 0.3	$ 2,310.8	$ (2,215.8)	$ (429.9)	$ (92.7)