Employee Stock and Savings Plans (Tables)

12 Months Ended

Dec. 31, 2013

Schedule of Estimation Assumptions Used

The fair values of stock options granted were estimated on the date of grant using a binomial option-pricing model with the following assumptions:

	2013			2012			2011
Expected life (in years)		6.4			6.5			6.6
Average risk-free interest rate		0.9	%		1.3	%		2.9	%
Expected volatility		29.9	%		31.1	%		31.0	%
Expected dividend yield		0	%		0	%		0	%

Summary of Stock Option Activity

A summary of stock option activity is as follows:

	Shares (In thousands)			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (In millions)
Stock options outstanding - December 31, 2012		9,536		$	25.89
Granted		2,049			41.46
Forfeited		(208	)		36.22
Exercised		(1,297	)		24.89
Stock options outstanding - December 31, 2013		10,080		$	28.97		6.1	$	303
Stock options exercisable - December 31, 2013		6,497		$	24.41		4.7	$	225

Summary of Restricted Stock Unit Activity

A summary of restricted stock unit activity is as follows:

	Shares (In thousands)			Weighted- Average Grant Date Fair Value
Restricted stock units - December 31, 2012		2,120		$	28.17
Granted		977			41.90
Forfeited		(204	)		31.44
Vested		(736	)		25.30
Restricted stock units - December 31, 2013		2,157		$	34.92

Schedule of Additional Information Related to Stock Option and Restricted Stock Unit Activity

The table below presents additional information related to stock option and restricted stock unit activity:

(In millions)	2013		2012		2011
Total intrinsic value of stock options exercised	$	27	$	51	$	26
Cash received from stock option exercises		32		80		54
Gross income tax benefit from stock option exercises		10		20		10
Fair value of restricted stock units upon vesting		31		29		18