Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Stock option and SAR activity for the three months ended March 31, 2012 is summarized in the table below:



	Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life	Aggregate Intrinsic Value
	(in millions)				(in years)	(in millions)
Outstanding at beginning of period	91		$	42
Exercised	(11	)	36
Forfeited	(1	)	44
Outstanding at end of period	79		43		4.5	$	1,266
Exercisable at end of period	67		45		4.1	974
Vested and expected to vest end of period	78		43		4.5	1,254

Restricted share activity for the three months ended March 31, 2012 is summarized in the table below:



(shares in millions)	Shares		Weighted-Average Grant Date Fair Value per Share
Nonvested at beginning of period	17		$	36
Granted	6		52
Vested	(6	)	34
Nonvested at end of period	17		43

Other Share-Based Compensation Data



(in millions, except per share amounts)	Three Months Ended March 31,
(in millions, except per share amounts)	2012		2011
Stock Options and SARs
Weighted-average grant date fair value of shares granted, per share	$	18	$	15
Total intrinsic value of stock options and SARs exercised	220		67
Restricted Shares
Weighted-average grant date fair value of shares granted, per share	52		42
Total fair value of restricted shares vested	291		69
Share-Based Compensation Items
Share-based compensation expense, before tax	140		123
Share-based compensation expense, net of tax effects	88		84
Income tax benefit realized from share-based award exercises	187		57



(in millions, except years)	March 31, 2012
Unrecognized compensation expense related to share awards	$	523
Weighted-average years to recognize compensation expense	1.1

The principal assumptions the Company used in applying the option-pricing model were as follows: