v3.26.1
Financial Instruments and Commodity Contracts - Summary of the Impact on AOCI and Earnings (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Total cash flow hedging derivatives $ 245 $ 37
Amount of Gain (Loss) Recognized in  Other expenses (income), net  (Excluded Portion) (7) 2
Cash flow hedges    
Derivative Instruments, Gain (Loss) [Line Items]    
Total cash flow hedging derivatives 244 54
Amount of Gain (Loss) Recognized in  Other expenses (income), net  (Excluded Portion) (7) 0
Cash flow hedges | Metal Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Total cash flow hedging derivatives 249 (4)
Amount of Gain (Loss) Recognized in  Other expenses (income), net  (Excluded Portion) (7) 0
Cash flow hedges | Currency Exchange Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Total cash flow hedging derivatives (6) 64
Amount of Gain (Loss) Recognized in  Other expenses (income), net  (Excluded Portion) 0 0
Cash flow hedges | Energy Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Total cash flow hedging derivatives 0 (5)
Amount of Gain (Loss) Recognized in  Other expenses (income), net  (Excluded Portion) 0 0
Cash flow hedges | Interest Rate Swap    
Derivative Instruments, Gain (Loss) [Line Items]    
Total cash flow hedging derivatives 1 (1)
Amount of Gain (Loss) Recognized in  Other expenses (income), net  (Excluded Portion) 0 0
Net investment hedges | Currency Exchange Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Total cash flow hedging derivatives 1 (17)
Amount of Gain (Loss) Recognized in  Other expenses (income), net  (Excluded Portion) $ 0 $ 2