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SHARE-BASED COMPENSATION (Details)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended 9 Months Ended
Feb. 19, 2026
shares
Jun. 30, 2026
USD ($)
plan
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
plan
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Increase in number of shares authorized for issuance (in shares) 2,600        
Number of shares authorized for issuance (in shares) 99,000        
Number of share-based compensation plans | plan   1   1  
Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
RSUs granted during period (in shares)   67 110 1,700 2,000
RSUs granted during period, weighted-average grant-date fair value (in usd per share) | $ / shares   $ 153.48 $ 148.72 $ 156.50 $ 162.23
Share-based compensation amortization | $   $ 48 $ 49 $ 176 $ 192
Compensation cost not yet recognized | $   $ 383   $ 383  
Weighted-average period of recognition       3 years