v3.25.4
Notional Amounts of Outstanding Derivative Instruments Measured in U.S. Dollar Equivalents (Detail) - USD ($)
$ in Millions
Dec. 31, 2025
Jun. 30, 2025
Designated as Hedging Instruments | Foreign Exchange Contracts | Derivatives Purchased    
Derivative [Line Items]    
Notional amounts $ 1,492 $ 1,492
Designated as Hedging Instruments | Interest Rate Contracts | Derivatives Purchased    
Derivative [Line Items]    
Notional amounts 1,166 1,150
Not Designated as Hedging Instruments | Foreign Exchange Contracts | Derivatives Purchased    
Derivative [Line Items]    
Notional amounts 8,884 15,214
Not Designated as Hedging Instruments | Foreign Exchange Contracts | Derivatives Sold    
Derivative [Line Items]    
Notional amounts 43,710 43,307
Not Designated as Hedging Instruments | Equity Contracts | Derivatives Purchased    
Derivative [Line Items]    
Notional amounts 4,943 5,434
Not Designated as Hedging Instruments | Equity Contracts | Derivatives Sold    
Derivative [Line Items]    
Notional amounts 2,189 2,189
Not Designated as Hedging Instruments | Other Contracts | Derivatives Purchased    
Derivative [Line Items]    
Notional amounts 2,578 2,769
Not Designated as Hedging Instruments | Other Contracts | Derivatives Sold    
Derivative [Line Items]    
Notional amounts $ 878 $ 1,242