SEGMENT INFORMATION (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
Segment reporting information [Line Items]
Revenues		$ 9,614	$ 9,676	$ 28,369	$ 28,369
Cloud services and license support expenses	[1]	937	894	2,807	2,645
Sales and marketing expenses	[1]	2,051	2,042	6,191	6,118
Margin		3,399	3,315	9,278	9,103
Total for operating segments [Member]
Segment reporting information [Line Items]
Revenues	[2]	9,618	9,681	28,386	28,408
Expenses		3,786	3,812	11,394	11,322
Margin	[3]	5,832	5,869	16,992	17,086
Total for operating segments [Member] | Cloud and License [Member]
Segment reporting information [Line Items]
Revenues	[2]	7,917	7,891	23,259	23,018
Cloud services and license support expenses		890	854	2,668	2,526
Sales and marketing expenses		1,780	1,743	5,357	5,200
Margin	[3]	5,247	5,294	15,234	15,292
Total for operating segments [Member] | Hardware [Member]
Segment reporting information [Line Items]
Revenues		915	994	2,711	2,878
Hardware products and support expenses		331	387	973	1,094
Sales and marketing expenses		123	155	381	487
Margin	[3]	461	452	1,357	1,297
Total for operating segments [Member] | Services [Member]
Segment reporting information [Line Items]
Revenues		786	796	2,416	2,512
Services expenses		662	673	2,015	2,015
Margin	[3]	$ 124	$ 123	$ 401	$ 497

[1] Exclusive of amortization of intangible assets, which is shown separately.

[2] Cloud and license revenues presented for management reporting included revenues related to cloud and license obligations that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in our consolidated statements of operations for the periods presented due to business combination accounting requirements. See Note 6 for an explanation of these adjustments and the table below for a reconciliation of our total operating segment revenues to our total consolidated revenues as reported in our condensed consolidated statements of operations.

[3] The margins reported reflect only the direct controllable costs of each line of business and do not include allocations of research and development, general and administrative and certain other allocable expenses, net. Additionally, the margins reported above do not reflect amortization of intangible assets, acquisition related and other expenses, restructuring expenses, stock-based compensation, interest expense or certain other non-operating income, net.