NOTES PAYABLE AND OTHER BORROWINGS Table (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2016	May 31, 2015
Notes Payable Other Borrowings [Line Items]
Outstanding commercial paper	$ 0	$ 0
Principal Payments for All Borrowings [Abstract]
Fiscal 2017	3,750
Fiscal 2018	6,000
Fiscal 2019	2,000
Fiscal 2020	4,500
Fiscal 2021	2,655
Thereafter	25,336
Total	44,241
Revolving Credit Agreements [Line Items]
Short-term borrowings	$ 3,750	1,999
Debt Instrument Covenant Compliance	We were in compliance with all debt-related covenants at May 31, 2016.
2016 Credit Agreement [Member]
Revolving Credit Agreements [Line Items]
Short-term borrowings	$ 3,800
Revolving credit agreement issuance date	May 23, 2016
Revolving credit agreement due date	Jun. 27, 2016
2013 Credit Agreement [Member]
Revolving Credit Agreements [Line Items]
Revolving credit agreement initiation date	Apr. 22, 2013
Revolving credit agreement capacity	$ 3,000
Revolving credit agreement amount outstanding	$ 0	$ 0
Revolving credit agreement due date	Apr. 20, 2018