Risk Management and Derivatives - Amounts Affecting Consolidated Statements of Income (Detail) - USD ($) $ in Millions	3 Months Ended
Aug. 31, 2019	Aug. 31, 2018
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	$ 0	$ 114
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	(1)	(2)
Derivatives designated as cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	163	143
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	127	(50)
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	21	16
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	8	5
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	109	101
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	75	(44)
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	33	26
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	46	(9)
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
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	$ (2)	$ (2)

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

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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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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