NOTES PAYABLE AND OTHER BORROWINGS Narrative (Details) € in Millions			3 Months Ended	12 Months Ended
		Jun. 27, 2016 USD ($)	Nov. 30, 2016 USD ($)	May 31, 2017 USD ($)	May 31, 2017 EUR (€)		Jul. 07, 2016 USD ($)	May 31, 2016 USD ($)	Jul. 10, 2013 EUR (€)
Notes Payable Other Borrowings [Line Items]
Senior notes and other borrowings, par value				$ 58,145,000,000			$ 14,000,000,000		€ 2,000
Debt instrument redemption description				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 except for the floating-rate senior notes which may not be redeemed prior to their maturity.
Debt-related covenants				We were in compliance with all debt-related covenants at May 31, 2017
Short-term borrowings				$ 9,797,000,000				$ 3,750,000,000
Other Notes Payable [Member]
Notes Payable Other Borrowings [Line Items]
Debt instrument fair value			$ 342,000,000
Other notes payable			$ 310,000,000
Other borrowings due August 2025 [Member]
Notes Payable Other Borrowings [Line Items]
Revolving credit agreement due date			Aug. 01, 2025
Other loans payable			$ 113,000,000
Debt instrument interest rate percentage			3.53%
2017 Credit Agreement [Member]
Notes Payable Other Borrowings [Line Items]
Date of issuance				May 24, 2017
Short-term borrowings				$ 3,800,000,000
Revolving credit agreement due date				Jun. 29, 2017
Revolving Credit Agreement				In May 2017, we entered into four revolving credit agreements with JPMorgan Chase Bank, N.A., as initial lender and administrative agent (the 2017 Credit Agreements) and borrowed $3.8 billion pursuant to these agreements. The 2017 Credit Agreements provided us with short-term borrowings for working capital and other general corporate purposes. Interest for the 2017 Credit Agreements is based on either (1) a LIBOR-based formula or (2) the Base Rate formula, each as set forth in the 2017 Credit Agreements. The borrowings are due and payable on June 29, 2017, which is the termination date of the 2017 Credit Agreements.
2016 Credit Agreement [Member]
Notes Payable Other Borrowings [Line Items]
Date of issuance				May 23, 2016
Short-term borrowings								3,750,000,000
Revolving Credit Agreement				In May 2016, we borrowed $3.8 billion pursuant to three revolving credit agreements with JPMorgan Chase Bank, N.A., as initial lender and administrative agent (the 2016 Credit Agreements). In June 2016, we repaid the $3.8 billion and the 2016 Credit Agreements expired pursuant to their terms.
Repayments of credit agreements		$ 3,750,000,000
2013 Credit Agreement [Member]
Notes Payable Other Borrowings [Line Items]
Revolving credit agreement due date				Apr. 20, 2018
Revolving Credit Agreement				In April 2013, we entered into a $3.0 billion Revolving Credit Agreement with Wells Fargo Bank, N.A., Bank of America, N.A., BNP Paribas, JPMorgan Chase Bank, N.A. and certain other lenders (the 2013 Credit Agreement). The 2013 Credit Agreement provides for an unsecured 5-year revolving credit facility to be used for general corporate purposes including back-stopping any commercial paper notes that we may issue. Subject to certain conditions stated in the 2013 Credit Agreement, we may borrow, prepay and re-borrow amounts under the 2013 Credit Agreement at any time during the term of the 2013 Credit Agreement. Interest under the 2013 Credit Agreement is based on either (a) a LIBOR-based formula or (b) the Base Rate formula, each as set forth in the 2013 Credit Agreement. Any amounts drawn pursuant to the 2013 Credit Agreement are due on April 20, 2018. No amounts were outstanding pursuant to the 2013 Credit Agreement as of May 31, 2017 and 2016.
Revolving credit agreement initiation date				Apr. 22, 2013
Revolving credit agreement capacity				$ 3,000,000,000
Revolving credit facility period				5 years
Revolving credit agreement amount outstanding				$ 0				$ 0
2.375% senior notes due January 2019 [Member]
Notes Payable Other Borrowings [Line Items]
Annual interest rate after the economic effect of the interest rate swaps				1.81%	1.81%			1.28%
Senior notes and other borrowings, par value	[1]			$ 1,500,000,000
Date of issuance	[1]			Jul. 16, 2013
Revolving credit agreement due date	[1]			Jan. 15, 2019
Debt instrument interest rate percentage				2.375%	2.375%
2.25% senior notes due October 2019 [Member]
Notes Payable Other Borrowings [Line Items]
Annual interest rate after the economic effect of the interest rate swaps				1.64%	1.64%			1.11%
Senior notes and other borrowings, par value	[1]			$ 2,000,000,000
Date of issuance	[1]			Jul. 08, 2014
Revolving credit agreement due date	[1]			Oct. 08, 2019
Debt instrument interest rate percentage				2.25%	2.25%
2.80% senior notes due July 2021 [Member]
Notes Payable Other Borrowings [Line Items]
Annual interest rate after the economic effect of the interest rate swaps				1.79%	1.79%			1.26%
Senior notes and other borrowings, par value				$ 1,500,000,000
Date of issuance	[1]			Jul. 08, 2014
Revolving credit agreement due date				Jul. 08, 2021
Debt instrument interest rate percentage				2.80%	2.80%
2.25% senior notes due January 2021 [Member]
Notes Payable Other Borrowings [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%
Date of issuance	[2],[3]			Jul. 10, 2013
Revolving credit agreement due date	[2],[3]			Jan. 10, 2021
Debt instrument interest rate percentage				2.25%	2.25%
3.125% senior notes due July 2025 [Member]
Notes Payable Other Borrowings [Line Items]
Senior notes and other borrowings, par value | €					€ 750	[2],[4]			€ 750
Date of issuance	[2],[4]			Jul. 10, 2013
Revolving credit agreement due date	[2],[4]			Jul. 10, 2025
Debt instrument interest rate percentage				3.125%	3.125%

[1] We have entered into certain interest rate swap agreements that have the economic effects of modifying the fixed-interest obligations associated with the 2.375% senior notes due January 2019 (January 2019 Notes), the 2.25% senior notes due 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 1.81% and 1.28% for the January 2019 Notes, 1.64% and 1.11% for the October 2019 Notes, and 1.79% and 1.26% for the July 2021 Notes as of May 31, 2017 and 2016, respectively. Refer to Notes 1 and 11 for a description of our accounting for fair value hedges.

[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, 2017 and May 31, 2016, 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 11 for additional information).

[4] We designated the July 2025 Notes as a net investment hedge of our investments in certain of our international subsidiaries that use the Euro as their functional currency in order to reduce the volatility in stockholders’ equity caused by the changes in foreign currency exchange rates of the Euro with respect to the U.S. Dollar (see Note 11 for additional information).