Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2024

Earnings Per Share [Abstract]

Computation of basic and diluted earnings/(loss) per share

The following table presents the computation of basic and diluted earnings per share of common stock.

($ in millions except per share amounts)
For the year ended December 31:	2024 (1)		2023		2022 (1)
Weighted-average number of shares on which earnings per share calculations are based
Basic	921,767,834		911,210,319		902,664,190
Add—incremental shares under stock-based compensation plans	13,012,755		8,700,951		7,593,455
Add—incremental shares associated with contingently issuable shares	2,380,636		2,162,558		2,011,417
Assuming dilution	937,161,224		922,073,828		912,269,062
Income from continuing operations	$	6,015	$	7,514	$	1,783
Income/(loss) from discontinued operations, net of tax (2)	8		(12)		(143)
Net income on which basic earnings per share is calculated	$	6,023	$	7,502	$	1,639
Income from continuing operations	$	6,015	$	7,514	$	1,783
Net income applicable to contingently issuable shares	—		—		—
Income from continuing operations on which diluted earnings per share is calculated	$	6,015	$	7,514	$	1,783
Income/(loss) from discontinued operations, net of tax, on which diluted earnings per share is calculated	8		(12)		(143)
Net income on which diluted earnings per share is calculated	$	6,023	$	7,502	$	1,639
Earnings/(loss) per share of common stock
Assuming dilution
Continuing operations	$	6.42	$	8.15	$	1.95
Discontinued operations	0.01		(0.01)		(0.16)
Total	$	6.43	$	8.14	$	1.80
Basic
Continuing operations	$	6.53	$	8.25	$	1.97
Discontinued operations	0.01		(0.01)		(0.16)
Total	$	6.53	$	8.23	$	1.82

(1)2024 and 2022 include the impacts of pension settlement charges. Refer to note U, “Retirement-Related Benefits,” for additional information.

(2)Primarily relates to discontinued operations of Kyndryl, separated in 2021.