Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Stock Options Outstanding and Exercised Under Various Stock Options Plans

The following is a summary of stock options outstanding and exercised under various stock options plans of the Company:

Year Ended December 31	Stock Options/Shares			Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Term		Aggregate Intrinsic Value (in millions)
2012
Number outstanding at beginning of period		75,823,941		$	27.60
Granted		4,180,492			28.65
Exercised		(15,681,323	)		23.12
Cancelled (a)		(1,151,192	)		24.90
Number outstanding at end of period (b)		63,171,918		$	28.83		4.9	$	196
Exercisable at end of period		50,671,654		$	30.12		4.2	$	92
2011
Number outstanding at beginning of period		85,622,705		$	26.80
Granted		4,063,369			28.66
Exercised		(8,508,107	)		19.49
Cancelled (a)		(5,354,026	)		28.44
Number outstanding at end of period (b)		75,823,941		$	27.60		5.2	$	(42	)
Exercisable at end of period		57,039,334		$	29.14		4.4	$	(120	)
2010
Number outstanding at beginning of period		88,379,469		$	26.49
Granted		5,417,631			23.98
Exercised		(5,769,586	)		19.38
Cancelled (a)		(2,404,809	)		27.03
Number outstanding at end of period (b)		85,622,705		$	26.80		5.5	$	15
Exercisable at end of period		57,542,065		$	28.28		4.4	$	(76	)

(a) Options cancelled include both non-vested (i.e., forfeitures) and vested options.

(b) Outstanding options include stock-based awards that may be forfeited in future periods. The impact of the estimated forfeitures is reflected in compensation expense.

Weighted Average Estimated Fair Value and Assumptions Utilized by Company for Newly Issued Grants

The following table includes the weighted average estimated fair value and assumptions utilized by the Company for newly issued grants:

Year Ended December 31	2012			2011			2010
Estimated fair value	$	10.19		$	10.55		$	8.36
Risk-free interest rates		.9	%		2.5	%		2.5	%
Dividend yield		2.6	%		2.5	%		3.0	%
Stock volatility factor		.49			.47			.47
Expected life of options (in years)		5.5			5.5			5.5

Summary of Certain Stock Option Activity of Company

The following summarizes certain stock option activity of the Company:

Year Ended December 31 (Dollars in Millions)	2012		2011		2010
Fair value of options vested	$	49	$	54	$	61
Intrinsic value of options exercised		143		61		35
Cash received from options exercised		362		165		112
Tax benefit realized from options exercised		75		23		13

Stock Options Outstanding Additional Information

Additional information regarding stock options outstanding as of December 31, 2012, is as follows:

	Outstanding Options						Exercisable Options
Range of Exercise Prices	Shares		Weighted- Average Remaining Contractual Life (Years)		Weighted- Average Exercise Price		Shares		Weighted- Average Exercise Price
$11.02 – $15.00		6,877,581		6.1	$	11.39		3,922,950	$	11.37
$15.01 – $20.00		186,439		3.7		19.35		171,651		19.47
$20.01 – $25.00		4,241,644		7.1		23.82		1,831,981		23.79
$25.01 – $30.00		17,691,503		5.4		29.05		10,591,999		29.36
$30.01 – $35.00		24,669,720		4.2		31.69		24,648,451		31.69
$35.01 – $36.25		9,505,031		4.0		36.06		9,504,622		36.06
		63,171,918		4.9	$	28.83		50,671,654	$	30.12

Summary of Status of Company's Restricted Shares of Stock and Unit Awards

A summary of the status of the Company’s restricted shares of stock and unit awards is presented below:

	2012					2011					2010
Year Ended December 31	Shares			Weighted- Average Grant-Date Fair Value		Shares			Weighted- Average Grant-Date Fair Value		Shares			Weighted- Average Grant-Date Fair Value
Nonvested Shares
Outstanding at beginning of period		8,995,295		$	22.46		8,811,027		$	19.74		6,788,203		$	16.68
Granted		3,085,077			28.70		3,136,086			28.20		4,398,660			24.05
Vested		(2,931,820	)		20.97		(2,552,979	)		20.15		(1,862,228	)		18.71
Cancelled		(212,809	)		25.01		(398,839	)		22.20		(513,608	)		20.00
Outstanding at end of period		8,935,743	(a)	$	25.04		8,995,295		$	22.46		8,811,027		$	19.74

(a) Includes maximum number of shares to be received by participants under awards that are based on the achievement of certain future performance criteria by the Company.