Fair Values of Derivative Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
Derivatives Fair Value [Line Items]
Derivative Assets	$ 318	$ 331
Gross amounts of derivatives offset in the balance sheets, assets	(196)	(151)
Cash collateral received, assets	0	0
Net amounts of derivatives, assets	$ 122	$ 180
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term assets	Other long-term assets
Derivative Liabilities	$ (1,490)	$ (800)
Gross amounts of derivatives offset in the balance sheets, liabilities	198	152
Cash collateral received, liabilities	(18)	(104)
Net amounts of derivatives, liabilities	$ (1,310)	$ (752)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Derivative Asset Statement of Financial Position [Extensible Enumeration not Disclosed Flag]	Net amounts of derivatives, assets	Net amounts of derivatives, assets
Derivative Liability Statement of Financial Position [Extensible Enumeration not Disclosed Flag]	Net amounts of derivatives, liabilities	Net amounts of derivatives, liabilities
Level 1
Derivatives Fair Value [Line Items]
Derivative Assets	$ 0	$ 0
Derivative Liabilities	(1)	(1)
Level 2
Derivatives Fair Value [Line Items]
Derivative Assets	313	327
Derivative Liabilities	(1,489)	(799)
Level 3
Derivatives Fair Value [Line Items]
Derivative Assets	5	4
Derivative Liabilities	0	0
Designated as Hedging Instruments | Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	50	24
Derivative Liabilities	(65)	(76)
Designated as Hedging Instruments | Interest Rate Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	5	19
Derivative Liabilities	0	0
Not Designated as Hedging Instruments | Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	189	213
Derivative Liabilities	(615)	(230)
Not Designated as Hedging Instruments | Equity Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	68	63
Derivative Liabilities	(804)	(491)
Not Designated as Hedging Instruments | Other Contracts
Derivatives Fair Value [Line Items]
Derivative Assets	6	12
Derivative Liabilities	(6)	(3)
Short-term Investments
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	(1)	12
Other Current Assets
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	118	149
Other Long-term Assets
Derivatives Fair Value [Line Items]
Net amounts of derivatives, assets	5	19
Other Current Liabilities
Derivatives Fair Value [Line Items]
Net amounts of derivatives, liabilities	(900)	(401)
Other Long-term Liabilities
Derivatives Fair Value [Line Items]
Net amounts of derivatives, liabilities	$ (410)	$ (351)