Stock Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2011

Stock Compensation Plans

Stock-based compensation expense recognized in continuing operations

	Three months ended				Nine months ended
	September 30,				September 30,
	2011		2010		2011		2010
Restricted stock units (“RSUs”)	$	31	$	29	$	108	$	99
Performance plans	24		10		59		51
Stock options	2		3		7		13
Employee stock purchase plans	2		1		5		3
Total stock-based compensation expense	$	59	$	43	$	179	$	166

Non-vested stock awards

	Nine months ended September 30,
	2011				2010
	Shares		Fair Value (1)		Shares		Fair Value (1)
Non-vested at beginning of period	10,674		$	38	12,850		$	36
Granted	4,831		50		4,984		39
Vested	(4,850	)	42		(6,288	)	35
Forfeited	(410	)	39		(412	)	38
Non-vested at end of period	10,245		42		11,134		38

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

Performance-based plans

	As of September 30,
	2011		2010
Potential RSUs to be issued based on current performance levels	5,791		4,883
Unamortized expense, based on current performance levels	$	107	$	107

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

	Three months ended September 30,				Nine months ended September 30,
	2011	2010			2011			2010
Weighted average volatility	N/A	27.8		%	26.1		%	28.5		%
Expected dividend yield	N/A	1.6		%	1.3		%	1.6		%
Risk-free rate	N/A	2.2		%	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	$	9.13		$	10.92		$	10.37

Stock options and related information

	Nine months ended September 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		142		38
Exercised	(3,781	)	32		(2,382	)	30
Forfeited and expired	(300	)	37		(402	)	34
Outstanding at end of period	9,918		32		13,295		33
Exercisable at end of period	8,566		30		10,535		32

Other information related to the company's stock options

	Three months ended				Nine months ended
	September 30,				September 30,
	2011		2010		2011		2010
Aggregate intrinsic value of stock options exercised	$	4	$	5	$	69	$	26
Cash received from the exercise of stock options	8		12		129		71
Tax benefit realized from the exercise of stock options	—		—		12		4