v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Stockholders' equity, beginning balance     $ 20,298  
Other comprehensive income (loss), net of tax $ (35) $ 301 (75) $ 14
Stockholders' equity, ending balance 20,394 19,886 20,394 19,886
Accumulated other comprehensive income (loss)        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Stockholders' equity, beginning balance (861) (1,150) (821) (868)
Stockholders' equity, ending balance (895) (850) (895) (850)
Foreign currency translation        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Stockholders' equity, beginning balance (620) (914) (565) (616)
Other comprehensive income (loss), net of tax (45) 297 (100) (4)
Stockholders' equity, ending balance (665) (617) (665) (617)
Other comprehensive income (loss), tax (4) 31 (12) 32
Purchase of noncontrolling interest        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Other comprehensive income (loss), net of tax 0 0 0 3
Pension and postretirement        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Stockholders' equity, beginning balance (261) (239) (269) (245)
Other comprehensive income (loss), net of tax 4 4 12 10
Stockholders' equity, ending balance (257) (235) (257) (235)
Other comprehensive income (loss), tax (1) 0 (3) (2)
Cash flow hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Stockholders' equity, beginning balance 20 3 13 (7)
Other comprehensive income (loss), net of tax 16 0 35 12
Reclassification, net of tax (9) (1) (21) (3)
Stockholders' equity, ending balance 27 2 27 2
Other comprehensive income (loss), tax (5) 0 (11) (4)
Reclassification of (gains) losses to sales and cost of sales, tax $ 3 $ 0 $ 6 $ 1