Gains (Losses) on Derivative Instruments Recognized on Consolidated Income Statements (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Revenue \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives Not Designated as Hedges	$ 0	$ 0	$ 0	$ 0
Revenue \| Other Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives Not Designated as Hedges	0	0	0	0
Other Income (Expense), Net \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives Not Designated as Hedges	139	52	197	(119)
Other Income (Expense), Net \| Other Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives Not Designated as Hedges	3	1	7	2
Fair Value Hedges \| Revenue \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives	0	0	0	0
Hedged items	0	0	0	0
Excluded from effectiveness assessment	0	0	0	0
Fair Value Hedges \| Revenue \| Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives	0	0	0	0
Hedged items	0	0	0	0
Fair Value Hedges \| Other Income (Expense), Net \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives	(124)	23	(293)	53
Hedged items	125	(26)	293	(59)
Excluded from effectiveness assessment	10	42	18	83
Fair Value Hedges \| Other Income (Expense), Net \| Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives	(9)	(14)	(9)	(13)
Hedged items	12	13	16	12
Cash Flow Hedges \| Revenue \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated other comprehensive income	0	0	0	0
Excluded from effectiveness assessment	0	0	0	0
Cash Flow Hedges \| Other Income (Expense), Net \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated other comprehensive income	21	8	41	3
Excluded from effectiveness assessment	$ 0	$ 0	$ 0	$ 0

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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The net gain (loss) relating to components of the gain (loss) on the cash flow hedging instrument excluded from the assessment of cash flow hedge effectiveness. Recognized in earnings.

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Net gain (loss) relating to components of the gain (loss) on the fair value hedging instrument excluded from the assessment of fair value hedge effectiveness. Recognized in earnings.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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