NOTES PAYABLE AND OTHER BORROWINGS Narrative (Details) - USD ($) $ in Billions	6 Months Ended
	Nov. 30, 2017	Nov. 09, 2017
Debt Instruments [Abstract]
Senior notes, par value		$ 10.0
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.
Debt-related covenants	We were in compliance with all debt-related covenants at November 30, 2017.