Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Share-Based Compensation [Abstract]

Total Share-Based Compensation Expense Resulting From Equity Awards

	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
	(in millions)
Share-based compensation expense before income taxes	$	10		$	8		$	26		$	25
Income tax benefit		(4	)		(3	)		(10	)		(10	)
Share-based compensation expense after income taxes	$	6		$	5		$	16		$	15

Schedule Of Weighted-Average Assumptions Stock Option Awards

	Three Months Ended September 30,					Nine Months Ended September 30,
	2011 (1)		2010			2011			2010
Expected life (in years)		—		5			5			5
Weighted-average risk free interest rate		—		1.70	%		2.16	%		2.27	%
Expected volatility		—		32.0	%		27.0	%		32.0	%
Dividend yield		—		—			—			—
Weighted-average fair value at grant date	$	—	$	5.96		$	7.06		$	6.36

⁽¹⁾  We did not grant any stock option awards during the three months ended September 30, 2011.

Summary Of Stock Option

	Number of Stock Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value
						(in years)		(in millions)
Outstanding at January 1, 2011		10,112,842		$	16.92		5.7	$	89
Granted (1)		1,267,430			25.28
Exercised		(926,171	)		9.35
Forfeited or expired		(380,208	)		26.73
Outstanding at September 30, 2011		10,073,893		$	18.30		5.7	$	71
Exercisable at September 30, 2011		5,312,827		$	13.85		3.4	$	64

⁽¹⁾  Primarily reflects our company-wide equity grant issued in March 2011, which includes a performance-based accelerated vesting feature based on achievement of specific levels of corporate performance, as described above.

Summary Of Restricted Stock

	Restricted Stock					PSUs
	Number of Awards			Weighted- Average Grant Date Fair Value		Number of Awards			Weighted- Average Grant Date Fair Value
Unvested balances at January 1, 2011		2,759,091		$	22.00		1,098,629		$	24.25
Granted		1,378,531	(1)		25.32		651,510	(2)		25.15
Vested		(321,834	)		24.39		(67,057	)		35.94
Forfeited		(394,922	)		22.24		(149,128	)		28.07
Unvested balances at September 30, 2011		3,420,866		$	23.15		1,533,954		$	23.75

⁽¹⁾  Restricted stock granted in 2011 primarily reflects our company-wide equity grant issued in March 2011, which includes a performance-based accelerated vesting feature based on achievement of specific levels of corporate performance, as described above.

⁽²⁾  PSUs granted in 2011 primarily reflect awards issued to certain executive officers, as described above.