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, 2024	$ 27,393	$ 27,307	$ 61,380	$ 151,163	$ (169,968)	$ (15,269)	$ 86
Net income plus other comprehensive income/(loss):
Net income	3,249	3,249		3,249
Other comprehensive income/(loss)	(772)	(772)				(772)
Total comprehensive income	2,476	2,476
Cash dividends paid — common stock	(3,112)	(3,112)		(3,112)
Common stock issued under employee plans	1,012	1,012	1,012
Purchases and sales of treasury stock under employee plans — net	(174)	(174)		67	(241)
Changes in noncontrolling interests	(7)						(7)
Balance at the end of the period at Jun. 30, 2025	27,588	27,509	62,392	151,367	(170,209)	(16,041)	79
Balance at the beginning of the period at Mar. 31, 2025	26,953	26,880	61,913	150,703	(170,160)	(15,575)	72
Net income plus other comprehensive income/(loss):
Net income	2,194	2,194		2,194
Other comprehensive income/(loss)	(466)	(466)				(466)
Total comprehensive income	1,728	1,728
Cash dividends paid — common stock	(1,563)	(1,563)		(1,563)
Common stock issued under employee plans	479	479	479
Purchases and sales of treasury stock under employee plans — net	(15)	(15)		34	(49)
Changes in noncontrolling interests	7						7
Balance at the end of the period at Jun. 30, 2025	27,588	27,509	62,392	151,367	(170,209)	(16,041)	79
Balance at the beginning of the period at Dec. 31, 2025	32,740	32,648	63,318	155,648	(170,605)	(15,713)	93
Net income plus other comprehensive income/(loss):
Net income	3,381	3,381		3,381
Other comprehensive income/(loss)	562	562				562
Total comprehensive income	3,943	3,943
Cash dividends paid — common stock	(3,166)	(3,166)		(3,166)
Common stock issued under employee plans	1,284	1,284	1,284
Purchases and sales of treasury stock under employee plans — net	(255)	(255)		74	(329)
Other equity	(1)	(1)	(1)	0
Changes in noncontrolling interests	(4)						(4)
Balance at the end of the period at Jun. 30, 2026	34,541	34,452	64,600	155,937	(170,934)	(15,151)	89
Balance at the beginning of the period at Mar. 31, 2026	33,056	32,974	63,936	155,327	(170,874)	(15,415)	81
Net income plus other comprehensive income/(loss):
Net income	2,165	2,165		2,165
Other comprehensive income/(loss)	263	263				263
Total comprehensive income	2,429	2,429
Cash dividends paid — common stock	(1,590)	(1,590)		(1,590)
Common stock issued under employee plans	666	666	666
Purchases and sales of treasury stock under employee plans — net	(25)	(25)		35	(60)
Other equity	(1)	(1)	(1)	0
Changes in noncontrolling interests	8						8
Balance at the end of the period at Jun. 30, 2026	$ 34,541	$ 34,452	$ 64,600	$ 155,937	$ (170,934)	$ (15,151)	$ 89