Condensed Consolidated Statements of Stockholders' Deficit Statement - USD ($) $ in Millions	Total	Common Stock Including Additional Paid in Capital [Member]	Accumulated Deficit [Member]	AOCI Attributable to Parent [Member]
Stockholders' Deficit	$ (1,260.5)	$ 13,620.1	$ (14,877.8)	$ (2.8)
Stock-based compensation expense		14.5
Stock Issued During Period, Value, Employee Stock Purchase Plan		8.2
Excise tax on repurchase of common stock	0.0
Stock Repurchased During Period, Value		(204.6)
Net Income	157.5		157.5
Other Comprehensive Income (Loss), Net of Tax	(0.2)			(0.2)
Stockholders' Deficit	(1,285.1)	13,438.2	(14,720.3)	(3.0)
Stockholders' Deficit	(1,562.2)	12,644.5	(14,204.0)	(2.7)
Stock-based compensation expense		14.1
Stock Issued During Period, Value, Employee Stock Purchase Plan		8.0
Excise tax on repurchase of common stock	(1.9)
Stock Repurchased During Period, Value		(230.5)
Net Income	178.7		178.7
Other Comprehensive Income (Loss), Net of Tax	0.0			0.0
Stockholders' Deficit	$ (1,593.8)	$ 12,434.2	$ (14,025.3)	$ (2.7)