
	Three months ended March 31,				Six months ended March 31,
$ in millions, except per share amounts	2026		2025		2026		2025
Income for basic earnings per common share:
Net income available to common shareholders	$	542	$	493	$	1,104	$	1,092
Less allocation of earnings and dividends to participating securities	—		(1)		(1)		(2)
Net income available to common shareholders after participating securities	$	542	$	492	$	1,103	$	1,090
Income for diluted earnings per common share:
Net income available to common shareholders	$	542	$	493	$	1,104	$	1,092
Less allocation of earnings and dividends to participating securities	—		(1)		(1)		(2)
Net income available to common shareholders after participating securities	$	542	$	492	$	1,103	$	1,090
Common shares:
Average common shares in basic computation	196.1		204.3		196.6		204.0
Dilutive effect of outstanding stock options and certain RSUs	3.1		4.4		3.7		4.9
Average common and common equivalent shares used in diluted computation	199.2		208.7		200.3		208.9
Earnings per common share:
Basic	$	2.76	$	2.41	$	5.61	$	5.34
Diluted	$	2.72	$	2.36	$	5.51	$	5.22
Stock options and certain RSUs excluded from weighted-average diluted common shares because their effect would be antidilutive	0.1		1.0		—		1.4

The allocation of earnings and dividends to participating securities in the preceding table represents dividends paid during the period to participating securities, consisting of restricted stock awards and certain RSUs, plus an allocation of undistributed earnings to such participating securities. Participating securities and related dividends paid on these participating securities were insignificant for each of the three and six months ended March 31, 2026 and 2025. Undistributed earnings are allocated to participating securities based upon their right to share in earnings as if all earnings for the period had been distributed.