CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Millions, unless otherwise specified	Total	Total IBM Stockholders' Equity	Common Stock and Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income/(Loss)	Non-Controlling Interests
Equity - at Dec. 31, 2012	$ 18,984	$ 18,860	$ 50,110	$ 117,641	$ (123,131)	$ (25,759)	$ 124
Net income plus other comprehensive income/(loss)
Net income	6,258	6,258		6,258
Other comprehensive income/(loss)	(16)	(16)				(16)
Total comprehensive income/(loss)	6,242	6,242
Cash dividends paid - common stock	(1,996)	(1,996)		(1,996)
Common stock issued under employee plan (Shares - 5,373,067 and 7,367,440 for the six months ended June 30, 2014 and 2013, respectively)	668	668	668
Purchases ( (Shares - 1,095,148 and 1,399,751) and sales ( Shares - 688,444 and 1,480,251) of the treasury stock under employee plans - net, for the six months ended June 30, 2014 and 2013, respectively)	(132)	(132)		(19)	(113)
Other treasury shares purchased, not retired (Shares - 61,765,138 and 29,389,794 for the six months ended June 30, 2014 and 2013, respectively)	(5,994)	(5,994)			(5,994)
Changes in other equity	108	108	108
Changes in noncontrolling interests	4						4
Equity - at Jun. 30, 2013	17,883	17,756	50,886	121,883	(129,239)	(25,774)	127
Equity - at Dec. 31, 2013	22,929	22,792	51,594	130,042	(137,242)	(21,602)	137
Net income plus other comprehensive income/(loss)
Net income	6,521	6,521		6,521
Other comprehensive income/(loss)	1,232	1,232				1,232
Total comprehensive income/(loss)	7,753	7,753
Cash dividends paid - common stock	(2,086)	(2,086)		(2,086)
Common stock issued under employee plan (Shares - 5,373,067 and 7,367,440 for the six months ended June 30, 2014 and 2013, respectively)	530	530	530
Purchases ( (Shares - 1,095,148 and 1,399,751) and sales ( Shares - 688,444 and 1,480,251) of the treasury stock under employee plans - net, for the six months ended June 30, 2014 and 2013, respectively)	(109)	(109)		6	(115)
Other treasury shares purchased, not retired (Shares - 61,765,138 and 29,389,794 for the six months ended June 30, 2014 and 2013, respectively)	(11,544)	(11,544)			(11,544)
Changes in other equity	39	39	39
Changes in noncontrolling interests	(1)						(1)
Equity - at Jun. 30, 2014	$ 17,513	$ 17,377	$ 52,163	$ 134,483	$ (148,900)	$ (20,369)	$ 136