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, 2012		2,107
Beginning Balance at Dec. 31, 2012	$ 23,524	$ 21	$ 3,691	$ 18,853	$ (208)	$ 1,167
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Stock issued through stock option and stock purchase plans (in shares)		24
Stock issued through stock option and stock purchase plans	342	$ 0	342
Tax benefit from stock options exercised	90		90
Restricted stock grants, cancellations and withholdings, net (in shares)		11
Restricted stock grants, cancellations and withholdings, net	(126)	$ 0	(126)
Repurchase of common stock (in shares)		(122)
Repurchase of common stock	(3,000)	$ (1)	(2,999)
EMC purchase of VMware stock	(150)		(124)			(26)
Stock options issued in business acquisitions	1		1
Stock-based compensation	946		946
Cash dividends declared	(628)			(628)
Impact from equity transactions of non-controlling interests	(333)		(473)			140
Net change in actuarial gain (loss) from pension and other postretirement plans	43				43
Change in market value of investments	(33)				(33)	0
Change in market value of derivatives	3				3	0
Translation adjustment	(44)				(44)
Convertible debt conversions and warrant settlement	(58)		(58)
Net income	3,093			2,889		204
Ending Balance (in shares) at Dec. 31, 2013		2,020
Ending 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)		33
Stock issued through stock option and stock purchase plans	503	$ 0	503
Tax benefit from stock options exercised	98		98
Restricted stock grants, cancellations and withholdings, net (in shares)		10
Restricted stock grants, cancellations and withholdings, net	(110)	$ 0	(110)
Repurchase of common stock (in shares)		(107)
Repurchase of common stock	(3,000)	$ 0	(2,333)	667
Stock options issued in business acquisitions	35		35
Stock-based compensation	1,055		1,055
Cash dividends declared	(919)			(919)
Impact from equity transactions of non-controlling interests	(690)		(654)			(36)
Net change in actuarial gain (loss) from pension and other postretirement plans	(16)				(16)
Change in market value of investments	18				18	0
Change in market value of derivatives	6				6	0
Translation adjustment	(135)				(135)
Stock Issued During Period Shares Stock Conversion Of Convertible Securities And Warrants		29
Convertible debt conversions and warrant settlement	0		0
Net income	$ 2,894			2,714		180
Ending Balance (in shares) at Dec. 31, 2014	1,985	1,985
Ending 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)		21
Stock issued through stock option and stock purchase plans	322	$ 0	322
Tax benefit from stock options exercised	32		32
Restricted stock grants, cancellations and withholdings, net (in shares)		13
Restricted stock grants, cancellations and withholdings, net	(150)	$ 0	(150)
Repurchase of common stock (in shares)		(76)
Repurchase of common stock	(2,033)	$ (1)	(409)	(1,623)
Stock-based compensation	1,145		1,145
Cash dividends declared	(909)		0	(909)		0
Impact from equity transactions of non-controlling interests	(1,168)		(940)			(228)
Net change in actuarial gain (loss) from pension and other postretirement plans	1				1
Change in market value of investments	(59)				(55)	(4)
Change in market value of derivatives	10				10	0
Translation adjustment	(169)				(169)
Net income	$ 2,172			1,990		182
Ending Balance (in shares) at Dec. 31, 2015	1,943	1,943
Ending Balance at Dec. 31, 2015	$ 22,719	$ 19	$ 0	$ 21,700	$ (579)	$ 1,579