v3.25.2
Derivative Instruments - Income Statement Impact of Derivative Instruments (Detail) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]    
Total gain/(loss) on derivative instruments $ 744 $ (88)
Interest rate swaps    
Derivative Instruments, Gain (Loss) [Line Items]    
Total gain/(loss) on derivative instruments 18 1
Cross currency swaps    
Derivative Instruments, Gain (Loss) [Line Items]    
Total gain/(loss) on derivative instruments $ 726 $ (89)