CONSOLIDATED STATEMENT OF EQUITY - USD ($) $ in Millions	Total	Total IBM Stockholders' Equity	Common Stock and Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income/(Loss)	Non- Controlling Interests
Balance at the beginning of the period at Dec. 31, 2022	$ 22,021	$ 21,944	$ 58,343	$ 149,825	$ (169,484)	$ (16,740)	$ 77
Net income plus other comprehensive income/(loss):
Net income	2,511	2,511		2,511
Other comprehensive income/(loss)	241	241				241
Total comprehensive income	2,751	2,751
Cash dividends paid - common stock	(3,007)	(3,007)		(3,007)
Common stock issued under employee plans	619	619	619
Purchases and sales of treasury stock under employee plans - net	(107)	(107)		(10)	(97)
Changes in noncontrolling interests	(7)						(7)
Balance at the end of the period at Jun. 30, 2023	22,271	22,201	58,963	149,318	(169,581)	(16,499)	70
Balance at the beginning of the period at Mar. 31, 2023	21,672	21,604	58,675	149,253	(169,544)	(16,780)	68
Net income plus other comprehensive income/(loss):
Net income	1,583	1,583		1,583
Other comprehensive income/(loss)	280	280				280
Total comprehensive income	1,863	1,863
Cash dividends paid - common stock	(1,510)	(1,510)		(1,510)
Common stock issued under employee plans	288	288	288
Purchases and sales of treasury stock under employee plans - net	(45)	(45)		(8)	(37)
Changes in noncontrolling interests	2						2
Balance at the end of the period at Jun. 30, 2023	22,271	22,201	58,963	149,318	(169,581)	(16,499)	70
Balance at the beginning of the period at Dec. 31, 2023	22,613	22,533	59,643	151,276	(169,624)	(18,761)	80
Net income plus other comprehensive income/(loss):
Net income	3,439	3,439		3,439
Other comprehensive income/(loss)	442	442				442
Total comprehensive income	3,882	3,882
Cash dividends paid - common stock	(3,058)	(3,058)		(3,058)
Common stock issued under employee plans	858	858	858
Purchases and sales of treasury stock under employee plans - net	(188)	(188)		3	(191)
Changes in noncontrolling interests	(3)						(3)
Balance at the end of the period at Jun. 30, 2024	24,103	24,026	60,501	151,659	(169,815)	(18,319)	77
Balance at the beginning of the period at Mar. 31, 2024	23,333	23,261	60,145	151,362	(169,759)	(18,488)	72
Net income plus other comprehensive income/(loss):
Net income	1,834	1,834		1,834
Other comprehensive income/(loss)	169	169				169
Total comprehensive income	2,003	2,003
Cash dividends paid - common stock	(1,537)	(1,537)		(1,537)
Common stock issued under employee plans	356	356	356
Purchases and sales of treasury stock under employee plans - net	(58)	(58)		(1)	(57)
Changes in noncontrolling interests	5						5
Balance at the end of the period at Jun. 30, 2024	$ 24,103	$ 24,026	$ 60,501	$ 151,659	$ (169,815)	$ (18,319)	$ 77