NOTES PAYABLE AND OTHER BORROWINGS (Details) € in Millions, $ in Millions		12 Months Ended
		May 31, 2020 USD ($)	May 31, 2020 EUR (€)		Apr. 01, 2020 USD ($)	May 31, 2019 USD ($)	Jul. 10, 2013 EUR (€)
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 72,115			$ 20,000		€ 2,000
Notes payable and other borrowings		71,807				$ 56,342
Unamortized discount/issuance costs		(285)				(202)
Hedge accounting fair value adjustments	[1],[2]	75				27
Total notes payable and other borrowings		71,597				56,167
Notes payable, current		2,371				4,494
Notes payable and other borrowings, non-current		69,226				51,673
5.00% senior notes due July 2019 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,750
Stated interest rate percentage		5.00%	5.00%
Maturity date		Jul. 08, 2019
Date of issuance		Jul. 09, 2009
Notes payable and other borrowings						$ 1,750
Effective interest rate						5.05%
2.25% senior notes due October 2019 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value	[2]	$ 2,000
Stated interest rate percentage		2.25%	2.25%
Maturity date	[2]	Oct. 08, 2019
Date of issuance	[2]	Jul. 08, 2014
Notes payable and other borrowings	[2]					$ 2,000
Effective interest rate	[2]					2.27%
3.875% senior notes due July 2020 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,000
Stated interest rate percentage		3.875%	3.875%
Maturity date		Jul. 15, 2020
Date of issuance		Jul. 12, 2010
Notes payable and other borrowings		$ 1,000				$ 1,000
Effective interest rate		3.93%	3.93%			3.93%
2.25% senior notes due January 2021 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value | €			€ 1,250	[3],[4]			1,250
Stated interest rate percentage		2.25%	2.25%
Maturity date	[3],[4]	Jan. 10, 2021
Date of issuance	[3],[4]	Jul. 10, 2013
Notes payable and other borrowings	[3],[4]	$ 1,371				$ 1,393
Effective interest rate	[3],[4]	2.33%	2.33%			2.33%
2.80% senior notes due July 2021 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value	[2]	$ 1,500
Stated interest rate percentage		2.80%	2.80%
Maturity date	[2]	Jul. 08, 2021
Date of issuance	[2]	Jul. 08, 2014
Notes payable and other borrowings	[2]	$ 1,500				$ 1,500
Effective interest rate	[2]	2.82%	2.82%			2.82%
1.90% senior notes due September 2021 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 4,250
Stated interest rate percentage		1.90%	1.90%
Maturity date		Sep. 15, 2021
Date of issuance		Jul. 07, 2016
Notes payable and other borrowings		$ 4,250				$ 4,250
Effective interest rate		1.94%	1.94%			1.94%
2.50% senior notes due May 2022 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,500
Stated interest rate percentage		2.50%	2.50%
Maturity date		May 15, 2022
Date of issuance		May 05, 2015
Notes payable and other borrowings		$ 2,500				$ 2,500
Effective interest rate		2.56%	2.56%			2.56%
2.50% senior notes due October 2022 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,500
Stated interest rate percentage		2.50%	2.50%
Maturity date		Oct. 15, 2022
Date of issuance		Oct. 25, 2012
Notes payable and other borrowings		$ 2,500				$ 2,500
Effective interest rate		2.51%	2.51%			2.51%
Senior Notes Due February2023
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,250
Stated interest rate percentage		2.625%	2.625%
Maturity date		Feb. 15, 2023
Date of issuance		Nov. 09, 2017
Notes payable and other borrowings		$ 1,250				$ 1,250
Effective interest rate		2.64%	2.64%			2.64%
3.625% senior notes due July 2023 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,000
Stated interest rate percentage		3.625%	3.625%
Maturity date		Jul. 23, 2023
Date of issuance		Jul. 16, 2013
Notes payable and other borrowings		$ 1,000				$ 1,000
Effective interest rate		3.73%	3.73%			3.73%
2.40% senior notes due September 2023 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,500
Stated interest rate percentage		2.40%	2.40%
Maturity date		Sep. 15, 2023
Date of issuance		Jul. 07, 2016
Notes payable and other borrowings		$ 2,500				$ 2,500
Effective interest rate		2.40%	2.40%			2.40%
3.40% senior notes due July 2024 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,000
Stated interest rate percentage		3.40%	3.40%
Maturity date		Jul. 08, 2024
Date of issuance		Jul. 08, 2014
Notes payable and other borrowings		$ 2,000				$ 2,000
Effective interest rate		3.43%	3.43%			3.43%
2.50% senior notes due April 2025 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value	[5]	$ 3,500
Stated interest rate percentage		2.50%	2.50%
Maturity date	[5]	Apr. 01, 2025
Date of issuance	[5]	Apr. 01, 2020
Notes payable and other borrowings	[5]	$ 3,500
Effective interest rate	[5]	2.51%	2.51%
2.95% senior notes due May 2025 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,500
Stated interest rate percentage		2.95%	2.95%
Maturity date		May 15, 2025
Date of issuance		May 05, 2015
Notes payable and other borrowings		$ 2,500				$ 2,500
Effective interest rate		3.00%	3.00%			3.00%
Senior Notes Due November2024
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,000
Stated interest rate percentage		2.95%	2.95%
Maturity date		Nov. 15, 2024
Date of issuance		Nov. 09, 2017
Notes payable and other borrowings		$ 2,000				$ 2,000
Effective interest rate		2.98%	2.98%			2.98%
3.125% senior notes due July 2025 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value | €			€ 750	[1],[3]			€ 750
Stated interest rate percentage		3.125%	3.125%
Maturity date	[1],[3]	Jul. 10, 2025
Date of issuance	[1],[3]	Jul. 10, 2013
Notes payable and other borrowings	[1],[3]	$ 823				$ 836
Effective interest rate	[1],[3]	3.17%	3.17%			3.17%
2.65% senior notes due July 2026 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 3,000
Stated interest rate percentage		2.65%	2.65%
Maturity date		Jul. 15, 2026
Date of issuance		Jul. 07, 2016
Notes payable and other borrowings		$ 3,000				$ 3,000
Effective interest rate		2.69%	2.69%			2.69%
2.80% senior notes due April 2027 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value	[5]	$ 2,250
Stated interest rate percentage		2.80%	2.80%
Maturity date	[5]	Apr. 01, 2027
Date of issuance	[5]	Apr. 01, 2020
Notes payable and other borrowings	[5]	$ 2,250
Effective interest rate	[5]	2.83%	2.83%
3.25% senior notes due May 2030 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 500
Stated interest rate percentage		3.25%	3.25%
Maturity date		May 15, 2030
Date of issuance		May 05, 2015
Notes payable and other borrowings		$ 500				$ 500
Effective interest rate		3.30%	3.30%			3.30%
4.30% senior notes due July 2034 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,750
Stated interest rate percentage		4.30%	4.30%
Maturity date		Jul. 08, 2034
Date of issuance		Jul. 08, 2014
Notes payable and other borrowings		$ 1,750				$ 1,750
Effective interest rate		4.30%	4.30%			4.30%
Senior Notes Due November2027
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,750
Stated interest rate percentage		3.25%	3.25%
Maturity date		Nov. 15, 2027
Date of issuance		Nov. 09, 2017
Notes payable and other borrowings		$ 2,750				$ 2,750
Effective interest rate		3.26%	3.26%			3.26%
2.95% senior notes due April 2030 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value	[5]	$ 3,250
Stated interest rate percentage		2.95%	2.95%
Maturity date	[5]	Apr. 01, 2030
Date of issuance	[5]	Apr. 01, 2020
Notes payable and other borrowings	[5]	$ 3,250
Effective interest rate	[5]	2.96%	2.96%
3.90% senior notes due May 2035 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,250
Stated interest rate percentage		3.90%	3.90%
Maturity date		May 15, 2035
Date of issuance		May 05, 2015
Notes payable and other borrowings		$ 1,250				$ 1,250
Effective interest rate		3.95%	3.95%			3.95%
3.85% senior notes due July 2036 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,250
Stated interest rate percentage		3.85%	3.85%
Maturity date		Jul. 15, 2036
Date of issuance		Jul. 07, 2016
Notes payable and other borrowings		$ 1,250				$ 1,250
Effective interest rate		3.85%	3.85%			3.85%
6.50% senior notes due April 2038 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,250
Stated interest rate percentage		6.50%	6.50%
Maturity date		Apr. 15, 2038
Date of issuance		Apr. 09, 2008
Notes payable and other borrowings		$ 1,250				$ 1,250
Effective interest rate		6.52%	6.52%			6.52%
6.125% senior notes due July 2039 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,250
Stated interest rate percentage		6.125%	6.125%
Maturity date		Jul. 08, 2039
Date of issuance		Jul. 08, 2009
Notes payable and other borrowings		$ 1,250				$ 1,250
Effective interest rate		6.19%	6.19%			6.19%
5.375% senior notes due July 2040 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,250
Stated interest rate percentage		5.375%	5.375%
Maturity date		Jul. 15, 2040
Date of issuance		Jul. 12, 2010
Notes payable and other borrowings		$ 2,250				$ 2,250
Effective interest rate		5.45%	5.45%			5.45%
Senior Notes Due November2037
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,750
Stated interest rate percentage		3.80%	3.80%
Maturity date		Nov. 15, 2037
Date of issuance		Nov. 09, 2017
Notes payable and other borrowings		$ 1,750				$ 1,750
Effective interest rate		3.83%	3.83%			3.83%
4.50% senior notes due July 2044 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,000
Stated interest rate percentage		4.50%	4.50%
Maturity date		Jul. 08, 2044
Date of issuance		Jul. 08, 2014
Notes payable and other borrowings		$ 1,000				$ 1,000
Effective interest rate		4.50%	4.50%			4.50%
4.125% senior notes due May 2045 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,000
Stated interest rate percentage		4.125%	4.125%
Maturity date		May 15, 2045
Date of issuance		May 05, 2015
Notes payable and other borrowings		$ 2,000				$ 2,000
Effective interest rate		4.15%	4.15%			4.15%
4.00% senior notes due July 2046 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 3,000
Stated interest rate percentage		4.00%	4.00%
Maturity date		Jul. 15, 2046
Date of issuance		Jul. 07, 2016
Notes payable and other borrowings		$ 3,000				$ 3,000
Effective interest rate		4.00%	4.00%			4.00%
3.60% senior notes due April 2040 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value	[5]	$ 3,000
Stated interest rate percentage		3.60%	3.60%
Maturity date	[5]	Apr. 30, 2040
Date of issuance	[5]	Apr. 01, 2020
Notes payable and other borrowings	[5]	$ 3,000
Effective interest rate	[5]	3.62%	3.62%
4.375% senior notes due May 2055 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 1,250
Stated interest rate percentage		4.375%	4.375%
Maturity date		May 15, 2055
Date of issuance		May 05, 2015
Notes payable and other borrowings		$ 1,250				$ 1,250
Effective interest rate		4.40%	4.40%			4.40%
Senior Notes Due November2047
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 2,250
Stated interest rate percentage		4.00%	4.00%
Maturity date		Nov. 15, 2047
Date of issuance		Nov. 09, 2017
Notes payable and other borrowings		$ 2,250				$ 2,250
Effective interest rate		4.03%	4.03%			4.03%
3.60% senior notes due April 2050 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value	[5]	$ 4,500
Stated interest rate percentage		3.60%	3.60%
Maturity date	[5]	Apr. 01, 2050
Date of issuance	[5]	Apr. 01, 2020
Notes payable and other borrowings	[5]	$ 4,500
Effective interest rate	[5]	3.62%	3.62%
3.85% senior notes due April 2060 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value	[5]	$ 3,500
Stated interest rate percentage		3.85%	3.85%
Maturity date	[5]	Apr. 01, 2060
Date of issuance	[5]	Apr. 01, 2020
Notes payable and other borrowings	[5]	$ 3,500
Effective interest rate	[5]	3.87%	3.87%
Floating rate senior notes due October 2019 [Member]
Debt Instrument [Line Items]
Senior notes and other borrowings, par value		$ 750
Maturity date		Oct. 08, 2019
Debt instrument LIBOR rate		0.51%
Date of issuance		Jul. 08, 2014
Notes payable and other borrowings						$ 750
Effective interest rate						3.10%
Other Borrowings Due August2025
Debt Instrument [Line Items]
Maturity date		Aug. 01, 2025
Date of issuance		Nov. 07, 2016
Notes payable and other borrowings		$ 113				$ 113
Effective interest rate		3.53%	3.53%			3.53%

[1] 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.

[2] 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.

[3] 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.

[4] 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).

[5] In April 2020, we issued $20.0 billion of senior notes for general corporate purposes, which may include stock repurchases, payment of cash dividends on our common stock and repayment of indebtedness and future acquisitions. The interest is payable semi-annually. We may redeem some or all of the senior notes of each series prior to their maturity, subject to certain restrictions, and the payment of an applicable make-whole premium in certain instances.