Net income per basic share is computed by dividing net income by the weighted-average number of shares outstanding for the period. Net income per diluted share is computed by dividing net income by the weighted-average number of shares assuming dilution for stock options and restricted stock units. Dilutive shares reflect the potential additional shares that would be outstanding if the dilutive stock options outstanding were exercised and the unvested restricted stock units vested during the period. The computation of net income per share for the three and six months ended June 30, 2026 and 2025 is as follows:


	Three Months Ended				Six Months Ended
	June 30,				June 30,
In millions except per share amounts	2026		2025		2026		2025
Net Income	$	815	$	755	$	1,583	$	1,455
Net income per share—Basic:
Weighted-average common shares	286.4		292.3		287.3		292.9
Net income per share—Basic	$	2.85	$	2.58	$	5.51	$	4.97
Net income per share—Diluted:
Weighted-average common shares	286.4		292.3		287.3		292.9
Effect of dilutive stock options and restricted stock units	0.6		0.6		0.8		0.8
Weighted-average common shares assuming dilution	287.0		292.9		288.1		293.7
Net income per share—Diluted	$	2.84	$	2.58	$	5.50	$	4.95

Options that were considered antidilutive were not included in the computation of diluted net income per share. There were 0.7 million antidilutive options outstanding for both the three months ended June 30, 2026 and 2025, and 0.7 million and 0.4 million antidilutive options outstanding for the six months ended June 30, 2026 and 2025, respectively.