CONSOLIDATED STATEMENT OF EQUITY (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock Issued	Common Stock In Treasury	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2015	$ 35,905	$ 12,693	$ (13,372)	$ 40,870	$ (4,558)	$ 272
Net income	523			501		22
Currency translation adjustments	17				17
Changes in unrealized gain on marketable securities	3				3
Changes in fair value of cash flow hedges	9				9
Pension and other postretirement benefit plans	63				63
Shares sold to optionees, less shares exchanged	47	(17)	64
Vesting of restricted stock		(28)	28
Shares issued under employee stock purchase plan	116	(19)	135
Stock repurchase program	(475)		(475)
Stock-based compensation expense	61	61
Dividends declared	(626)			(626)
Other	19	10				9
Balance at Mar. 31, 2016	35,662	12,700	(13,620)	40,745	(4,466)	303
Balance at Dec. 31, 2016	$ 41,529	$ 12,801	(3,550)	36,470	(4,643)	451
Balance, shares at Dec. 31, 2016	1,391	1,434
Treasury shares, Balance at Dec. 31, 2016	(43)
Net income	$ 284			279		5
Currency translation adjustments	45				45
Changes in unrealized gain on marketable securities	(4)				(4)
Changes in fair value of cash flow hedges	11				11
Pension and other postretirement benefit plans	62				62
Shares sold to optionees, less shares exchanged	$ 39	$ (29)	$ 68
Shares sold to optionees, less shares exchanged, shares	1		1
Vesting of restricted stock		(49)	$ 49
Vesting of restricted stock, shares	1		1
Shares issued under employee stock purchase plan	$ 96	(12)	$ 108
Shares issued under employee stock purchase plan, shares	1		1
Stock repurchase program	$ (372)		$ (372)
Stock repurchase program, shares	(5)		(5)
Stock-based compensation expense	$ 88	88
Dividends declared	(697)			(697)
Other	(27)	(19)				(8)
Balance at Mar. 31, 2017	$ 41,054	$ 12,780	$ (3,697)	$ 36,052	$ (4,529)	$ 448
Balance, shares at Mar. 31, 2017	1,389	1,434
Treasury shares, Balance at Mar. 31, 2017	(45)