v3.26.1
Financial Instruments and Commodity Contracts - Gain (Loss) Recognition (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Total loss (gain) recognized in other expenses (income), net $ 50 $ (53)
Income Statement Location [Axis]: us-gaap:OtherNonoperatingIncomeExpense    
Derivative Instruments, Gain (Loss) [Line Items]    
Losses (gains) recognized on balance sheet remeasurement currency exchange contracts, net 13 (41)
Realized losses (gains) on change in fair value of derivative instruments, net 115 (20)
Unrealized (gains) losses on change in fair value of derivative instruments, net (78) 8
Not Designated as Hedging Instrument    
Derivative Instruments, Gain (Loss) [Line Items]    
Total loss (gain) recognized in other expenses (income), net 43 (50)
Not Designated as Hedging Instrument | Metal Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Total loss (gain) recognized in other expenses (income), net 26 (13)
Not Designated as Hedging Instrument | Currency Exchange Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Total loss (gain) recognized in other expenses (income), net 16 (38)
Not Designated as Hedging Instrument | Energy Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Total loss (gain) recognized in other expenses (income), net 1 1
Designated as Hedging Instrument    
Derivative Instruments, Gain (Loss) [Line Items]    
Total loss (gain) recognized in other expenses (income), net $ 7 $ (3)