NOTES PAYABLE AND OTHER BORROWINGS Narrative (Details) € in Millions		May 31, 2020 USD ($)	May 31, 2020 EUR (€)		Apr. 01, 2020 USD ($)	May 31, 2019	May 31, 2018 USD ($)	Jul. 10, 2013 EUR (€)
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 72,115,000,000			$ 20,000,000,000.0			€ 2,000
2013 Credit Agreement [Member]
Debt Instrument [Line Items]
Revolving credit agreement capacity		3,000,000,000.0
2.25% senior notes due October 2019 [Member]
Debt Instrument [Line Items]
Annual interest rate after the economic effect of the interest rate swaps						3.07%
Senior notes and other borrowings, par value	[1]	$ 2,000,000,000
Effective interest rate	[1]					2.27%
2.80% senior notes due July 2021 [Member]
Debt Instrument [Line Items]
Annual interest rate after the economic effect of the interest rate swaps		1.99%	1.99%			3.22%
Senior notes and other borrowings, par value	[1]	$ 1,500,000,000
Effective interest rate	[1]	2.82%	2.82%			2.82%
2.25% senior notes due January 2021 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value | €			€ 1,250	[2],[3]				1,250
Senior notes fixed principal amount		$ 1,600,000,000
Annual interest rate for the 2.25% notes due January 2021 after the economic effect of the cross-currency swaps		3.53%	3.53%
Effective interest rate	[2],[3]	2.33%	2.33%			2.33%
3.125% senior notes due July 2025 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value | €			€ 750	[2],[4]				€ 750
Effective interest rate	[2],[4]	3.17%	3.17%			3.17%
3.125% senior notes due July 2025 [Member] | Cross-currency interest rate swap agreements [Member]
Debt Instrument [Line Items]
Senior notes fixed principal amount							$ 871,000,000
Effective interest rate		4.46%	4.46%			5.74%

[1] We entered into certain interest rate swap agreements that have the economic effects of modifying the fixed-interest obligations associated with the 2.25% senior notes that were due and were settled in October 2019 (October 2019 Notes) and the 2.80% senior notes due July 2021 (July 2021 Notes) so that the interest payable on these notes effectively became variable based on LIBOR. The effective interest rates after consideration of these fixed to variable interest rate swap agreements were 3.07% as of May 31, 2019 for the October 2019 Notes, and 1.99% and 3.22%, respectively, for the July 2021 Notes as of May 31, 2020 and 2019, respectively. Refer to Notes 1 and 10 for a description of our accounting for fair value hedges associated with our July 2021 Notes and to our Annual Report for the year ended May 31, 2019 for a description of our accounting for fair value hedges associated with our October 2019 Notes.

[2] In July 2013, we issued €2.0 billion of fixed-rate senior notes comprised of €1.25 billion of 2.25% senior notes due January 2021 (January 2021 Notes) and €750 million of 3.125% senior notes due July 2025 (July 2025 Notes, and together with the January 2021 Notes, the Euro Notes). Principal and unamortized discount/issuance costs for the Euro Notes in the table above were calculated using foreign currency exchange rates as of May 31, 2020 and May 31, 2019, respectively. The Euro Notes are registered and trade on the New York Stock Exchange.

[3] In connection with the issuance of the January 2021 Notes, we entered into certain cross-currency swap agreements that have the economic effect of converting our fixed-rate, Euro-denominated debt, including annual interest payments and the payment of principal at maturity, to a fixed-rate, U.S. Dollar-denominated debt of $1.6 billion with a fixed annual interest rate of 3.53% (see Note 10 for additional information).

[4] In fiscal 2018 we entered into certain cross-currency interest rate swap agreements that have the economic effect of converting our fixed-rate, Euro-denominated debt, including annual interest payments and the payment of principal at maturity, to a variable-rate, U.S. Dollar-denominated debt of $871 million based on LIBOR. The effective interest rates as of May 31, 2020 and 2019 after consideration of the cross-currency interest rate swap agreements were 4.46% and 5.74%, respectively, for the July 2025 Notes. Refer to Notes 1 and 10 for a description of our accounting for fair value hedges.