Risk Management and Derivatives - Amounts Affecting Consolidated Statements of Income (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Foreign Exchange Contract \| Other (income) expense, net \| Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED  IN INCOME ON DERIVATIVES	$ (11)	$ 12	$ (98)	$ (9)
Embedded derivatives \| Other (income) expense, net \| Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED  IN INCOME ON DERIVATIVES	(4)	(2)	(17)	(7)
Derivatives designated as cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	(160)	64	(750)	208
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	(46)	131	132	388
Derivatives designated as cash flow hedges \| Foreign Exchange Contract \| Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	(38)	17	(32)	(45)
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	16	(21)	56	(12)
Derivatives designated as cash flow hedges \| Foreign Exchange Contract \| Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	(99)	39	(539)	185
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	(35)	110	110	287
Derivatives designated as cash flow hedges \| Foreign Exchange Contract \| Demand creation expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	1	1	4	1
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	1	0	2	(3)
Derivatives designated as cash flow hedges \| Foreign Exchange Contract \| Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	(24)	7	(183)	67
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	(26)	44	(31)	121
Derivatives designated as cash flow hedges \| Interest rate swaps \| Interest (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	0	0	0	0
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	$ (2)	$ (2)	$ (5)	$ (5)

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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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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