v3.25.2
Derivative Instruments and Hedging Activities - Location and Amount of Gains and Losses on Derivative Instruments and Related Hedge Items (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) recognized in income on derivative $ 72 $ 18 $ (22) $ 31
Foreign currency exchange derivatives | Cost of sales        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) recognized in income on derivative 0 (4) (8) (7)
Foreign currency exchange derivatives | Net financing charges        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) recognized in income on derivative 71 20 (13) 36
Foreign currency exchange derivatives | Selling, general and administrative        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) recognized in income on derivative 1 2 (1) 2
Cash Flow Hedging        
Derivative Instruments, Gain (Loss) [Line Items]        
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax 0 6 18 (12)
Amount of gain (loss) reclassified from AOCI into income 6 4 8 (3)
Cash Flow Hedging | Foreign currency exchange derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax 0 2 15 4
Cash Flow Hedging | Foreign currency exchange derivatives | Cost of sales        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) reclassified from AOCI into income 4 4 7 1
Cash Flow Hedging | Commodity derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax 0 4 3 5
Cash Flow Hedging | Commodity derivatives | Cost of sales        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) reclassified from AOCI into income 2 0 1 (4)
Cash Flow Hedging | Interest rate swaps        
Derivative Instruments, Gain (Loss) [Line Items]        
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax 0 0 0 (21)
Net Investment Hedging        
Derivative Instruments, Gain (Loss) [Line Items]        
Pre-tax gains (losses) related to net investment hedges recorded in other comprehensive income $ (269) $ 44 $ (162) $ (3)