Notional Amounts of Outstanding Derivative Instruments Measured in U.S. Dollar Equivalents (Detail) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021
Designated as Hedging Instruments \| Foreign Exchange Contracts \| Derivatives Purchased
Derivative [Line Items]
Notional amounts	$ 635	$ 635
Designated as Hedging Instruments \| Foreign Exchange Contracts \| Derivatives Sold
Derivative [Line Items]
Notional amounts	2,984	6,081
Designated as Hedging Instruments \| Interest Rate Contracts \| Derivatives Purchased
Derivative [Line Items]
Notional amounts	1,235	1,247
Not Designated as Hedging Instruments \| Foreign Exchange Contracts \| Derivatives Purchased
Derivative [Line Items]
Notional amounts	8,527	14,223
Not Designated as Hedging Instruments \| Foreign Exchange Contracts \| Derivatives Sold
Derivative [Line Items]
Notional amounts	13,805	23,391
Not Designated as Hedging Instruments \| Other Contracts \| Derivatives Purchased
Derivative [Line Items]
Notional amounts	3,042	2,456
Not Designated as Hedging Instruments \| Other Contracts \| Derivatives Sold
Derivative [Line Items]
Notional amounts	$ 719	$ 763