Fair Values of Derivative Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019
Derivatives Fair Value [Line Items]
Derivative Assets	$ 231	$ 250
Gross amounts of derivatives offset in the balance sheet, assets	(85)	(113)
Cash collateral received, assets	0	0
Net amounts of derivatives, assets	146	137
Derivative Liabilities	(187)	(272)
Gross amounts of derivatives offset in the balance sheet, liabilities	86	114
Cash collateral received, liabilities	(93)	(78)
Net amounts of derivatives, liabilities	(194)	(236)
Level 1
Derivatives Fair Value [Line Items]
Derivative Assets	1	0
Derivative Liabilities	0	0
Level 2
Derivatives Fair Value [Line Items]
Derivative Assets	227	247
Derivative Liabilities	(187)	(272)
Level 3
Derivatives Fair Value [Line Items]
Derivative Assets	3	3
Derivative Liabilities	0	0
Designated as Hedging Instruments \| Interest Rate Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	0	0
Derivative Liabilities	(11)	0
Designated as Hedging Instruments \| Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	33	0
Derivative Liabilities	(24)	(93)
Not Designated as Hedging Instruments \| Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	165	204
Derivative Liabilities	(148)	(172)
Not Designated as Hedging Instruments \| Other Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	33	46
Derivative Liabilities	(4)	(7)
Short-term Investments
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	22	(13)
Other Current Assets
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	133	146
Other Long-term Assets
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	(9)	4
Other Current Liabilities
Derivatives Fair Value [Line Items]
Net amounts of derivatives, liabilities	(150)	(221)
Other Long-term Liabilities
Derivatives Fair Value [Line Items]
Net amounts of derivatives, liabilities	$ (44)	$ (15)

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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