v3.26.1
EARNINGS PER SHARE (Tables)
 6 Months Ended
Mar. 31, 2026
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Share
The following table presents the computation of basic and diluted earnings per common share.
 Three months ended March 31,Six months ended March 31,
$ in millions, except per share amounts
2026202520262025
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 computation199.2 208.7 200.3 208.9 
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