Employee Stock And Savings Plans (Tables)

12 Months Ended

Dec. 31, 2011

Employee Stock And Savings Plans [Abstract]

Schedule Of Estimation Assumptions Used

	2011		2010		2009
Expected life (in years)		6.6		6.6		6.5
Average risk-free interest rate		2.9%		3.3%		2.3%
Expected volatility		31.0%		31.9%		33.7%
Expected dividend yield		0%		0%		0%

Summary Of Stock Option Activity

	Shares (In thousands)			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (In millions)
Stock options outstanding - December 31, 2010		6,582		$	43.57
Granted		1,016			61.57
Forfeited		(363	)		50.16
Exercised		(1,341	)		41.93
Stock options outstanding - December 31, 2011		5,894		$	46.64		6.0	$	74
Stock options exercisable - December 31, 2011		3,929		$	44.32		4.8	$	57

Summary Of Restricted Stock Unit Activity

	Shares (In thousands)			Weighted- Average Grant Date Fair Value
Restricted stock units - December 31, 2010		1,080		$	43.49
Granted		567			58.45
Forfeited		(183	)		47.27
Vested		(294	)		45.16
Restricted stock units - December 31, 2011		1,170		$	49.56

Schedule Of Additional Information Related To Stock Option And Restricted Stock Unit Activity

(In millions)	2011		2010		2009
Total intrinsic value of stock options exercised	$	26	$	23	$	10
Cash received from stock option exercises		54		47		24
Gross income tax benefit from stock option exercises		10		9		4
Fair value of restricted stock units upon vesting		18		14		4