DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Nov. 30, 2019

Derivative Instrument Detail [Abstract]

Fair Values of Derivative Instruments Designated as Hedges in Condensed Consolidated Balance Sheets

		Fair Value as of
(in millions)	Balance Sheet Location	November 30, 2019		May 31, 2019
Derivative assets:
Interest rate swap agreements designated as fair value hedges	Other non-current assets	$	12	$	5
Total derivative assets		$	12	$	5
Derivative liabilities:
Interest rate swap agreements designated as fair value hedges	Other current liabilities	$	—	$	5
Cross-currency interest rate swap agreements designated as fair value hedges	Other non-current liabilities		27		17
Cross-currency swap agreements designated as cash flow hedges	Other non-current liabilities		242		208
Total derivative liabilities		$	269	$	230

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

(in millions)	November 30, 2019		May 31, 2019
Notes payable, current:
Carrying amount of hedged item	$	—	$	1,994
Cumulative hedging adjustments included in the carrying amount		—		(5	)
Notes payable and other borrowings, non-current:
Carrying amounts of hedged items		3,653		3,652
Cumulative hedging adjustments included in the carrying amount		44		44

Effects of Derivative Instruments Designated as Hedges on Income

	Three Months Ended November 30,
	2019						2018
(in millions)	Non-operating income, net			Interest expense			Non-operating income, net			Interest expense
Condensed consolidated statements of operations line amounts in which the hedge effects were recorded	$	92		$	(465	)	$	192		$	(519	)
Gain (loss) on hedges recognized in income:
Interest rate swaps designated as fair value hedges:
Derivative instruments	$	—		$	(4	)	$	—		$	(31	)
Hedged items		—			4			—			31
Cross-currency interest rate swaps designated as fair value hedges:
Derivative instruments		5			(16	)		(24	)		1
Hedged items		(3	)		16			21			(1	)
Cross-currency swap agreements designated as cash flow hedges:
Amount of gain (loss) reclassified from accumulated OCI or OCL		(10	)		—			(49	)		—
Total gain (loss) on hedges recognized in income	$	(8	)	$	—		$	(52	)	$	—

	Six Months Ended November 30,
	2019						2018
(in millions)	Non-operating income, net			Interest expense			Non-operating income, net			Interest expense
Condensed consolidated statements of operations line amounts in which the hedge effects were recorded	$	191		$	(959	)	$	484		$	(1,048	)
Gain (loss) on hedges recognized in income:
Interest rate swaps designated as fair value hedges:
Derivative instruments	$	—		$	12		$	—		$	(38	)
Hedged items		—			(12	)		—			38
Cross-currency interest rate swaps designated as fair value hedges:
Derivative instruments		(13	)		7			(28	)		1
Hedged items		12			(7	)		26			(1	)
Cross-currency swap agreements designated as cash flow hedges:
Amount of gain (loss) reclassified from accumulated OCI or OCL		(18	)		—			(37	)		—
Total gain (loss) on hedges recognized in income	$	(19	)	$	—		$	(39	)	$	—

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

	Three Months Ended November 30,						Six Months Ended November 30,
(in millions)	2019			2018			2019			2018
Cross-currency swap agreements designated as cash flow hedges	$	(2	)	$	(41	)	$	(34	)	$	(55	)