Operating Segments and Related Information - Information by Operating Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2016
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 36,397	$ 34,350	$ 32,376
Earnings Before Interest and Taxes	4,379	4,945	4,642
Interest expense (income), net	54	59	19
Income before income taxes	4,325	4,886	4,623
Additions to Long-lived Assets	1,194	1,201	1,191
Depreciation	747	706	649
Corporate
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	26	75	(86)
Earnings Before Interest and Taxes	(1,456)	(724)	(1,173)
Additions to Long-lived Assets	325	387	312
Depreciation	110	91	84
NIKE Brand
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	34,485	32,233	30,507
Earnings Before Interest and Taxes	5,525	5,192	5,328
Additions to Long-lived Assets	847	784	840
Depreciation	604	587	538
NIKE Brand | Global Brand Divisions
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	88	73	73
Earnings Before Interest and Taxes	(2,658)	(2,677)	(2,596)
Additions to Long-lived Assets	286	278	258
Depreciation	217	233	230
NIKE Brand | North America
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	14,855	15,216	14,764
Earnings Before Interest and Taxes	3,600	3,875	3,763
Additions to Long-lived Assets	196	223	242
Depreciation	160	140	133
NIKE Brand | Europe, Middle East & Africa
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	9,242	7,970	7,568
Earnings Before Interest and Taxes	1,587	1,507	1,787
Additions to Long-lived Assets	240	173	234
Depreciation	116	106	85
NIKE Brand | Greater China
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	5,134	4,237	3,785
Earnings Before Interest and Taxes	1,807	1,507	1,372
Additions to Long-lived Assets	76	51	44
Depreciation	56	54	48
NIKE Brand | Asia Pacific & Latin America
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	5,166	4,737	4,317
Earnings Before Interest and Taxes	1,189	980	1,002
Additions to Long-lived Assets	49	59	62
Depreciation	55	54	42
Converse
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,886	2,042	1,955
Earnings Before Interest and Taxes	310	477	487
Additions to Long-lived Assets	22	30	39
Depreciation	$ 33	$ 28	$ 27