Stock Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2011

Stock Compensation Plans

Stock-based compensation expense recognized in continuing operations

	Three months ended				Six months ended
	June 30,				June 30,
	2011		2010		2011		2010
Restricted stock units (“RSUs”)	$	33	$	29	$	78	$	70
Performance plans	10		22		35		41
Stock options	2		5		5		10
Employee stock purchase plans	2		1		3		2
Total stock-based compensation expense	$	47	$	57	$	121	$	123

Non-vested stock awards

	Six months ended June 30,
	2011				2010
	Shares		Fair Value (1)		Shares		Fair Value (1)
Non-vested at beginning of period	10,674		$	38	12,850		$	36
Granted	4,590		51		4,643		39
Vested	(4,550	)	42		(5,235	)	36
Forfeited	(283	)	40		(248	)	36
Non-vested at end of period	10,431		42		12,010		37

(1) Represents per share weighted average fair value of award at date of grant

Performance-based plans

	As of June 30,
	2011		2010
Potential RSUs to be issued based on current performance levels	5,777		5,343
Unamortized expense, based on current performance levels	$	129	$	139

Weighted average assumptions, average expected life and estimated fair value of employee stock options

	Three months ended June 30,				Six months ended June 30,
	2011	2010			2011			2010
Weighted average volatility	N/A	25.4		%	26.1		%	28.5		%
Expected dividend yield	N/A	1.4		%	1.3		%	1.6		%
Risk-free rate	N/A	3.0		%	2.2		%	3.0		%
Weighted average expected life, in years	N/A	6.1			5.5			6.1
Weighted average estimated fair value per share	N/A	$	10.99		$	10.92		$	10.37

Stock options and related information

	Six months ended June 30,
	2011				2010
	Shares		Weighted- Average Exercise Price		Shares		Weighted- Average Exercise Price
Outstanding at beginning of period	13,919		$	32	15,937		$	33
Granted	80		53		143		38
Exercised	(3,554	)	32		(1,948	)	31
Forfeited and expired	(216	)	37		(242	)	32
Outstanding at end of period	10,229		32		13,890		33
Exercisable at end of period	8,804		30		9,273		32

Other information related to the company's stock options

	Three months ended				Six months ended
	June 30,				June 30,
	2011		2010		2011		2010
Aggregate intrinsic value of stock options exercised	$	24	$	6	$	65	$	21
Cash received from the exercise of stock options	39		28		121		60
Tax benefit realized from the exercise of stock options	5		3		12		4