Fair Values of Derivative Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Jun. 30, 2020
Derivatives Fair Value [Line Items]
Derivative Assets	$ 544	$ 400
Gross amounts of derivatives offset in the balance sheet, assets	(157)	(154)
Cash collateral received, assets	0	0
Net amounts of derivatives, assets	387	246
Derivative Liabilities	(544)	(399)
Gross amounts of derivatives offset in the balance sheet, liabilities	158	158
Cash collateral received, liabilities	(288)	(154)
Net amounts of derivatives, liabilities	(674)	(395)
Level 1
Derivatives Fair Value [Line Items]
Derivative Assets	1	1
Derivative Liabilities	0	0
Level 2
Derivatives Fair Value [Line Items]
Derivative Assets	542	398
Derivative Liabilities	(544)	(399)
Level 3
Derivatives Fair Value [Line Items]
Derivative Assets	1	1
Derivative Liabilities	0	0
Designated as Hedging Instruments \| Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	14	44
Derivative Liabilities	(72)	(54)
Designated as Hedging Instruments \| Interest Rate Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	77	93
Derivative Liabilities	0	0
Not Designated as Hedging Instruments \| Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	409	245
Derivative Liabilities	(463)	(334)
Not Designated as Hedging Instruments \| Other Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	44	18
Derivative Liabilities	(9)	(11)
Short-term Investments
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	(21)	35
Other Current Assets
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	320	199
Other Long-term Assets
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	88	12
Other Current Liabilities
Derivatives Fair Value [Line Items]
Net amounts of derivatives, liabilities	(648)	(334)
Other Long-term Liabilities
Derivatives Fair Value [Line Items]
Net amounts of derivatives, liabilities	$ (26)	$ (61)

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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