Stock Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2012

Stock Compensation Plans

Stock-based compensation expense recognized in continuing operations

	Three months ended
	March 31,
	2012		2011
Restricted stock units (“RSUs”)	$	49	$	45
Performance Share Awards (“PSAs”)	2		25
Stock options	2		3
Employee stock purchase plans	2		1
Total share-based compensation expense	$	55	$	74

Non-vested stock awards

	Three months ended March 31,
	2012				2011
	Shares		Fair Value (1)		Shares		Fair Value (1)
Non-vested at beginning of period	9,916		$	42	10,674		$	38
Granted	2,278		47		2,384		52
Vested	(2,022	)	43		(2,071	)	39
Forfeited	(179	)	44		(94	)	39
Non-vested at end of period	9,993		43		10,893		41

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

Performance-based plans

	2012			2011			2010
Target PSAs granted	1,353			1,715			1,390
Fair value (1)	$		47	$		50	$		39
Number of shares that would be issued based on current performance levels	1,353			1,158			1,299
Unamortized expense, based on current performance levels	$	63		$	36		$	12

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

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

	Three months ended March 31,
	2012	2011
Weighted average volatility	N/A	26.1		%
Expected dividend yield	N/A	1.3		%
Risk-free rate	N/A	2.2		%
Weighted average expected life, in years	N/A	5.5
Weighted average estimated fair value per share	N/A	$	10.92

Stock options and related information

	Three months ended March 31,
	2012				2011
	Shares		Weighted- Average Exercise Price		Shares		Weighted- Average Exercise Price
Beginning outstanding	9,116		$	32	13,919		$	32
Granted	—		—		80		53
Exercised	(1,032	)	35		(2,344	)	33
Forfeited and expired	(12	)	40		(127	)	37
Outstanding at end of period	8,072		31		11,528		32
Exercisable at end of period	7,173		30		9,461		30

Other information related to the company's stock options

	Three months ended
	March 31,
	2012		2011
Aggregate intrinsic value of stock options exercised	$	13	$	41
Cash received from the exercise of stock options	37		82
Tax benefit realized from the exercise of stock options	1		7