Equity Activity (Tables)

9 Months Ended

Sep. 30, 2026

Stockholders' Equity Note [Abstract]

Reclassifications and taxes related to items of other comprehensive income

($ in millions)	Before Tax Amount		Tax (Expense)/ Benefit		Net of Tax Amount
For the three months ended September 30, 2026:
Other comprehensive income/(loss):
Foreign currency translation adjustments	$	79	$	(19)	$	60
Net unrealized gains/(losses) on available-for-sale securities	$	0	$	0	$	0
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	$	(66)	$	18	$	(48)
Reclassification of (gains)/losses to:
Cost of services	20		(5)		15
Cost of sales	(10)		3		(7)
Cost of financing	1		0		1
SG&A expense	(4)		1		(3)
Other (income) and expense	(7)		2		(5)
Interest expense	5		(1)		4
Total unrealized gains/(losses) on cash flow hedges	$	(61)	$	18	$	(43)
Retirement-related benefit plans: (1)
Prior service costs/(credits)	$	—	$	—	$	—
Net gains/(losses) arising during the period	(2)		0		(2)
Curtailments and settlements	2		0		2
Amortization of prior service costs/(credits)	9		(2)		6
Amortization of net (gains)/losses	196		(52)		144
Total retirement-related benefit plans	$	205	$	(55)	$	150
Other comprehensive income/(loss)	$	222	$	(56)	$	166

(1)These accumulated other comprehensive income (AOCI) components are included in the computation of net periodic pension cost. Refer to note 18, “Retirement-Related Benefits,” for additional information.

($ in millions)	Before Tax Amount		Tax (Expense)/ Benefit		Net of Tax Amount
For the three months ended September 30, 2025:
Other comprehensive income/(loss):
Foreign currency translation adjustments	$	(100)	$	(40)	$	(140)
Net unrealized gains/(losses) on available-for-sale securities	$	(2)	$	0	$	(1)
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	$	20	$	(6)	$	14
Reclassification of (gains)/losses to:
Cost of services	7		(2)		5
Cost of sales	0		0		0
Cost of financing	1		0		1
SG&A expense	1		0		1
Other (income) and expense	79		(20)		59
Interest expense	6		(1)		4
Total unrealized gains/(losses) on cash flow hedges	$	113	$	(30)	$	84
Retirement-related benefit plans: (1)
Prior service costs/(credits)	$	0	$	0	$	0
Net gains/(losses) arising during the period	0		0		0
Curtailments and settlements	2		0		1
Amortization of prior service costs/(credits)	(2)		1		(1)
Amortization of net (gains)/losses	158		(43)		115
Total retirement-related benefit plans	$	158	$	(43)	$	115
Other comprehensive income/(loss)	$	170	$	(112)	$	58

(1)These AOCI components are included in the computation of net periodic pension cost. Refer to note 18, “Retirement-Related Benefits,” for additional information.

($ in millions)	Before Tax Amount		Tax (Expense)/ Benefit		Net of Tax Amount
For the nine months ended September 30, 2026:
Other comprehensive income/(loss):
Foreign currency translation adjustments	$	206	$	(177)	$	28
Net unrealized gains/(losses) on available-for-sale securities	$	0	$	0	$	0
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	$	(123)	$	28	$	(94)
Reclassification of (gains)/losses to:
Cost of services	57		(14)		43
Cost of sales	(19)		7		(12)
Cost of financing	3		(1)		3
SG&A expense	(7)		2		(5)
Other (income) and expense	393		(98)		295
Interest expense	16		(4)		12
Total unrealized gains/(losses) on cash flow hedges	$	321	$	(79)	$	241
Retirement-related benefit plans: (1)
Prior service costs/(credits)	$	—	$	—	$	—
Net gains/(losses) arising during the period	(1)		(1)		(2)
Curtailments and settlements	7		(2)		5
Amortization of prior service costs/(credits)	26		(6)		20
Amortization of net (gains)/losses	590		(155)		436
Total retirement-related benefit plans	$	622	$	(163)	$	459
Other comprehensive income/(loss)	$	1,148	$	(420)	$	728

(1)These AOCI components are included in the computation of net periodic pension cost. Refer to note 18, “Retirement-Related Benefits,” for additional information.

($ in millions)	Before Tax Amount		Tax (Expense)/ Benefit		Net of Tax Amount
For the nine months ended September 30, 2025:
Other comprehensive income/(loss):
Foreign currency translation adjustments	$	(1,056)	$	562	$	(494)
Net unrealized gains/(losses) on available-for-sale securities	$	1	$	0	$	0
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	$	(121)	$	34	$	(87)
Reclassification of (gains)/losses to:
Cost of services	12		(3)		9
Cost of sales	(2)		1		(1)
Cost of financing	3		(1)		2
SG&A expense	(1)		0		(1)
Other (income) and expense	(679)		171		(508)
Interest expense	18		(5)		13
Total unrealized gains/(losses) on cash flow hedges	$	(769)	$	197	$	(572)
Retirement-related benefit plans: (1)
Prior service costs/(credits)	$	0	$	0	$	0
Net gains/(losses) arising during the period	0		8		8
Curtailments and settlements	8		(2)		6
Amortization of prior service costs/(credits)	(5)		2		(3)
Amortization of net (gains)/losses	466		(126)		341
Total retirement-related benefit plans	$	469	$	(118)	$	351
Other comprehensive income/(loss)	$	(1,355)	$	641	$	(715)

(1)These AOCI components are included in the computation of net periodic pension cost. Refer to note 18, “Retirement-Related Benefits,” for additional information.

Accumulated other comprehensive income/(loss) (net of tax)

($ in millions)	Foreign Currency Translation Adjustments (1)		Net Unrealized Gains/(Losses) on Available- For-Sale Securities		Net Unrealized Gains/(Losses) on Cash Flow Hedges		Net Change Retirement- Related Benefit Plans		Accumulated Other Comprehensive Income/(Loss)
January 1, 2026	$	(3,956)	$	0	$	(157)	$	(11,600)	$	(15,713)
Other comprehensive income before reclassifications	28		0		(94)		(2)		(68)
Amount reclassified from accumulated other comprehensive income	—		—		336		461		796
Total change for the period	$	28	$	0	$	241	$	459	$	728
September 30, 2026	$	(3,928)	$	(1)	$	85	$	(11,141)	$	(14,985)

($ in millions)	Foreign Currency Translation Adjustments (1)		Net Unrealized Gains/(Losses) on Available- For-Sale Securities		Net Unrealized Gains/(Losses) on Cash Flow Hedges		Net Change Retirement- Related Benefit Plans		Accumulated Other Comprehensive Income/(Loss)
January 1, 2025	$	(3,512)	$	0	$	237	$	(11,994)	$	(15,269)
Other comprehensive income before reclassifications	(494)		0		(87)		8		(572)
Amount reclassified from accumulated other comprehensive income	—		—		(485)		343		(142)
Total change for the period	$	(494)	$	0	$	(572)	$	351	$	(715)
September 30, 2025	$	(4,005)	$	1	$	(335)	$	(11,643)	$	(15,983)

(1)Foreign currency translation adjustments are presented gross except for any associated hedges which are presented net of tax.