CONSOLIDATED STATEMENT OF EQUITY (USD $) In Millions	Total	Common Stock Issued [Member]	Common Stock In Treasury [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]
Balance, at Dec. 31, 2011	$ 31,392	$ 11,639	$ (5,679)	$ 28,860	$ (3,557)	$ 129
Net income	2,720			2,703		17
Currency translation adjustments	(93)				(93)
Changes in fair value of derivatives	(27)				(27)
Pension and other postretirement benefit plans	104				104
Shares sold to optionees, less shares exchanged	118	(58)	176
Vesting of restricted stock		(12)	12
Shares issued under employee stock purchase plan	115	11	104
Stock repurchase program	(823)		(823)
Stock-based compensation expense	167	167
Dividends declared	(733)			(733)
Other	27	14	1			12
Balance, at Jun. 30, 2012	32,967	11,761	(6,209)	30,830	(3,573)	158
Balance, at Dec. 31, 2012	34,858	11,912	(6,160)	32,887	(3,888)	107
Balance, shares at Dec. 31, 2012	1,328	1,434	(106)
Net income	3,367			3,354		13
Shares sold to optionees, less shares exchanged	1		1
Currency translation adjustments	(234)				(234)
Changes in unrealized gain on marketable securities	83				83
Changes in fair value of derivatives	(59)				(59)
Pension and other postretirement benefit plans	178				178
Shares sold to optionees, less shares exchanged	63	(18)	81
Vesting of restricted stock		(43)	43
Shares issued under employee stock purchase plan	126	5	122
Vesting of restricted stock	1		1
Shares issued under employee stock purchase plan	2		2
Stock repurchase program	(9)		(9)
Stock repurchase program	(692)		(692)
Stock-based compensation expense	168	168
Dividends declared	(832)			(832)
Other	22	1	1			19
Balance, at Jun. 30, 2013	$ 37,048	$ 12,025	$ (6,605)	$ 35,409	$ (3,920)	$ 139
Balance, shares at Jun. 30, 2013	1,323	1,434	(111)