DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Aug. 31, 2018

Derivative Instrument Detail [Abstract]

Fair Values of Derivative and Non-Derivative Instruments Designated as Hedges in Consolidated Balance Sheets

		Fair Value as of
(in millions)	Balance Sheet Location	August 31, 2018		May 31, 2018
Derivative assets:
Interest rate swap agreements designated as fair value hedges	Other non-current assets	$	15	$	24
Cross-currency interest rate swap agreements designated as fair value hedges	Other non-current assets		1		5
Total derivative assets		$	16	$	29
Derivative liabilities:
Interest rate swap agreements designated as fair value hedges	Other current liabilities	$	4	$	7
Interest rate swap agreements designated as fair value hedges	Other non-current liabilities		49		48
Cross-currency swap agreements designated as cash flow hedges	Other non-current liabilities		117		103
Total derivative liabilities		$	170	$	158

Effects of Fair Value Hedging Relationships on Hedged Items in Condensed Consolidated Balance Sheet

(in millions)	August 31, 2018			May 31, 2018
Notes payable and other borrowings, current:
Carrying amount of hedged item	$	1,495		$	1,492
Cumulative hedging adjustments included in the carrying amount		(4	)		(7	)
Notes payable and other borrowings, non-current:
Carrying amounts of hedged items		5,570			5,584
Cumulative hedging adjustments included in the carrying amount		(34	)		(19	)

Effects of Derivative and Non-Derivative Instruments Designated as Hedges on Income

	Three Months Ended August 31,
	2018						2017
(in millions)	Non-operating income, net			Interest expense			Non-operating income, net		Interest expense
Condensed consolidated statements of income line    amounts in which the hedge effects were recorded	$	291		$	(529	)	$	220	$	(469	)
Gain (loss) on hedges recognized in income:
Interest rate swaps designated as fair value hedges:
Derivative instruments	$	—		$	(7	)	$	—	$	—
Hedged items		—			7			—		—
Cross-currency interest rate swaps designated as fair    value hedges:
Derivative instruments		(4	)		—			—		—
Hedged items		5			—			—		—
Cross-currency swap agreements designated as cash    flow hedges:
Amount reclassified from accumulated OCI or OCL		12			—			107		—
Total gain (loss) on hedges recognized in income	$	13		$	—		$	107	$	—

Effects of Derivative and Non-Derivative Instruments Designated as Hedges on Other Comprehensive Income (OCI) or Loss (OCL)

	Three Months Ended August 31,
(in millions)	2018			2017
Cross-currency swap agreements designated as cash flow hedges	$	(14	)	$	85
Foreign currency borrowings designated as net investment hedge		—			(64	)