CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interests
Beginning Balance (in shares) at Dec. 31, 2013		2,020
Beginning Balance at Dec. 31, 2013	$ 23,786	$ 20	$ 1,406	$ 21,114	$ (239)	$ 1,485
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Stock issued through stock option and stock purchase plans (in shares)		29
Stock issued through stock option and stock purchase plans	445	$ 0	445
Tax benefit from stock options exercised	80		80
Restricted stock grants, cancellations and withholdings, net (in shares)		9
Restricted stock grants, cancellations and withholdings, net	(101)	$ 0	(101)
Repurchase of common stock (in shares)		(52)
Repurchase of common stock	(1,374)		(1,374)
Stock options issued in business acquisitions	33		33
Stock-based compensation	787		787
Cash dividends declared	(685)			(685)
Impact from equity transactions of non-controlling interests	(402)		(426)			24
Net change in actuarial gain (loss) from pension and other postretirement plans	1				1
Change in market value of investments	88				88	0
Change in market value of derivatives	9				9
Translation adjustment	(57)				(57)
Stock Issued During Period Shares Stock Conversion Of Convertible Securities And Warrants		29
Convertible debt conversions and warrant settlement	0		0
Net income	1,681			1,568		113
Ending Balance (in shares) at Sep. 30, 2014		2,035
Ending Balance at Sep. 30, 2014	$ 24,291	$ 20	850	21,997	(198)	1,622
Beginning Balance (in shares) at Dec. 31, 2014	1,985	1,985
Beginning Balance at Dec. 31, 2014	$ 23,525	$ 20	0	22,242	(366)	1,629
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Stock issued through stock option and stock purchase plans (in shares)		18
Stock issued through stock option and stock purchase plans	293	$ 0	293
Tax benefit from stock options exercised	33		33
Restricted stock grants, cancellations and withholdings, net (in shares)		12
Restricted stock grants, cancellations and withholdings, net	(137)	$ 0	(137)
Repurchase of common stock (in shares)		(76)
Repurchase of common stock	(2,033)	$ (1)	(209)	(1,823)
Stock options issued in business acquisitions	1		1
Stock-based compensation	845		845
Cash dividends declared	(680)			(680)
Impact from equity transactions of non-controlling interests	(1,061)		(826)			(235)
Net change in actuarial gain (loss) from pension and other postretirement plans	0
Change in market value of investments	(36)				(34)	(2)
Change in market value of derivatives	3				4	(1)
Translation adjustment	(137)				(137)
Net income	$ 1,339			1,219		120
Ending Balance (in shares) at Sep. 30, 2015	1,939	1,939
Ending Balance at Sep. 30, 2015	$ 21,955	$ 19	$ 0	$ 20,958	$ (533)	$ 1,511