v3.26.3
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Accumulated Other Comprehensive Income (Loss), Net of Taxes (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance $ (9,679) $ (6,283) $ (1,978)
Unrealized gains (losses) on derivatives 101 (23) (124)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax 9 (3) (1)
Foreign currency translation adjustment (66) 58 181
Other comprehensive income, net of tax 44 32 56
Ending balance (9,992) (9,679) (6,283)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax (31) 8  
Pension Liability Adjustments, Net 0 0  
Cash Flow Hedging | Designated as Hedging Instrument | Net Sales      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Derivative, Gain (Loss) on Derivative, Net (3) (1)  
Derivative, Gain (Loss) on Derivative, Tax Expense (Benefit) (1) (1)  
Cash Flow Hedging | Designated as Hedging Instrument | Interest Expense, Net      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Derivative, Gain (Loss) on Derivative, Net 14 57  
Derivative, Gain (Loss) on Derivative, Tax Expense (Benefit) (4) (18)  
Accumulated Other Comprehensive (Loss) Income      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (10) (42) (98)
Other comprehensive income, net of tax 44 32  
Ending balance 34 (10) (42)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (4) 19  
Unrealized gains (losses) on derivatives 101 (23)  
Ending balance 97 (4) 19
Defined benefit pension plan activity (3)      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (2) 1  
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax 9 (3)  
Ending balance 7 (2) 1
Currency translation adjustment      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (4) (62)  
Foreign currency translation adjustment (66) 58  
Ending balance $ (70) $ (4) $ (62)