DERIVATIVE FINANCIAL INSTRUMENTS EFFECTS ON BALANCE SHEETS (Details) - USD ($) $ in Millions	May 31, 2021	May 31, 2020
Derivative assets:
Total derivative assets	$ 73	$ 29
Derivative liabilities:
Total derivative liabilities	0	268
Fair value hedges [Member] \| Notes payable, current [Member]
Effects of fair value hedging relationship on hedged item in consolidated balance sheet
Carrying amount of hedged item	1,503	0
Cumulative hedging adjustments included in the carrying amount	3	0
Fair value hedges [Member] \| Notes payable and other borrowings, non-current [Member]
Effects of fair value hedging relationship on hedged item in consolidated balance sheet
Carrying amount of hedged item	2,229	3,680
Cumulative hedging adjustments included in the carrying amount	118	75
Fair value hedges [Member] \| Interest Rate Swaps [Member] \| Other non-current assets [Member]
Derivative assets:
Total derivative assets	3	0
Fair value hedges [Member] \| Interest Rate Swaps [Member] \| Other non-current assets [Member]
Derivative assets:
Total derivative assets	0	29
Fair value hedges [Member] \| Cross-currency interest rate swap agreements [Member] \| Other non-current assets [Member]
Derivative assets:
Total derivative assets	70	0
Fair value hedges [Member] \| Cross-currency interest rate swap agreements [Member] \| Other non-current liabilities [Member]
Derivative liabilities:
Total derivative liabilities	0	17
Cash flow hedges [Member] \| Cross-Currency Swaps [Member] \| Other current liabilities [Member]
Derivative liabilities:
Total derivative liabilities	$ 0	$ 251

Fair value of all liability derivatives designated as cash flow hedging instruments.

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