Consolidated Statements Of Stockholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Common Stock [Member]	Accumulated Deficit	AOCI Attributable to Parent [Member]
Shares, Issued			(39,300)	(137,100)
Balance	$ 439.0	$ 7,010.0	$ (4,623.0)	$ 1.0	$ (1,802.0)	$ (147.0)
Comprehensive income (loss):
Net income	163.0				163.0
Other comprehensive income (loss)	(7.0)					(7.0)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	156.0
Stockholders' Equity Attributable to Noncontrolling Interest	5.0	5.0
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			500
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	15.0	(89.0)	$ 104.0
Number of Options - Exercised			0
Stock Issued During Period, Value, Stock Options Exercised	0.0	(2.0)	$ (2.0)
Excess Tax Benefit from Share-based Compensation, Financing Activities	(5.0)	5.0	0.0
Stock Issued During Period, Value, Employee Stock Purchase Plan	(1.0)	(1.0)	$ (2.0)
Treasury Stock, Shares, Acquired			12,300
Treasury Stock, Value, Acquired, Cost Method	$ (390.0)		$ (390.0)
Treasury Stock, Shares, Acquired	24,000
Treasury Stock, Value, Acquired, Cost Method	$ (800.0)
Shares, Issued			(51,100)	(137,100)
Balance	221.0	6,918.0	$ (4,905.0)	$ 1.0	(1,639.0)	(154.0)
Cumulative Effect of New Accounting Principle in Period of Adoption	56.0				56.0
Net income	361.0				361.0
Other comprehensive income (loss)	130.0					130.0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	491.0
Stockholders' Equity Attributable to Noncontrolling Interest	1.0	1.0
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			400
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	4.0	(50.0)	$ 54.0
Number of Options - Exercised			500
Stock Issued During Period, Value, Stock Options Exercised	0.0	(48.0)	$ (48.0)
Stock Issued During Period, Value, Employee Stock Purchase Plan	0.0	1.0	$ (1.0)
Treasury Stock, Shares, Acquired			6,100
Treasury Stock, Value, Acquired, Cost Method	(200.0)		$ (200.0)
Shares, Issued			(56,300)	(137,100)
Balance	573.0	6,820.0	$ (5,002.0)	$ 1.0	(1,222.0)	(24.0)
Cumulative Effect of New Accounting Principle in Period of Adoption	(40.0)				(34.0)	(6.0)
Net income	165.0
Other comprehensive income (loss)	(103.0)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	62.0
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			500
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$ 17.0	(31.0)	$ 48.0
Number of Options - Exercised	216		200
Stock Issued During Period, Value, Stock Options Exercised	$ (2.0)	(17.0)	$ (19.0)
Stock Issued During Period, Value, Employee Stock Purchase Plan	0.0	1.0	$ (1.0)
Treasury Stock, Shares, Acquired			5,900
Treasury Stock, Value, Acquired, Cost Method	(200.0)		$ (200.0)
Shares, Issued			(61,500)	(137,100)
Balance	$ 414.0	$ 6,771.0	$ (5,134.0)	$ 1.0	$ (1,091.0)	$ (133.0)