NOTES PAYABLE AND OTHER BORROWINGS (Details) - USD ($) $ in Millions	9 Months Ended
Feb. 28, 2018	Nov. 09, 2017
Notes Payable Other Borrowings [Line Items]
Fixed rate senior notes	$ 10,000
Unamortized discount/issuance costs	(55)
Total fixed rate senior notes, net	9,945
Senior notes, par value		$ 10,000
2.625% senior notes due February 2023 [Member]
Notes Payable Other Borrowings [Line Items]
Fixed rate senior notes	$ 1,250
Date of issuance	Nov. 09, 2017
Effective interest rate	2.637%
Senior notes, par value	$ 1,250
Stated interest rate percentage	2.625%
Maturity date	Feb. 28, 2023
2.95% senior notes due November 2024 [Member]
Notes Payable Other Borrowings [Line Items]
Fixed rate senior notes	$ 2,000
Date of issuance	Nov. 09, 2017
Effective interest rate	2.975%
Senior notes, par value	$ 2,000
Stated interest rate percentage	2.95%
Maturity date	Nov. 30, 2024
3.25% senior notes due November 2027 [Member]
Notes Payable Other Borrowings [Line Items]
Fixed rate senior notes	$ 2,750
Date of issuance	Nov. 09, 2017
Effective interest rate	3.263%
Senior notes, par value	$ 2,750
Stated interest rate percentage	3.25%
Maturity date	Nov. 30, 2027
3.80% senior notes due November 2037 [Member]
Notes Payable Other Borrowings [Line Items]
Fixed rate senior notes	$ 1,750
Date of issuance	Nov. 09, 2017
Effective interest rate	3.827%
Senior notes, par value	$ 1,750
Stated interest rate percentage	3.80%
Maturity date	Nov. 30, 2037
4.00% senior notes due November 2047 [Member]
Notes Payable Other Borrowings [Line Items]
Fixed rate senior notes	$ 2,250
Date of issuance	Nov. 09, 2017
Effective interest rate	4.027%
Senior notes, par value	$ 2,250
Stated interest rate percentage	4.00%
Maturity date	Nov. 30, 2047

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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