Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 39,117	$ 36,397	$ 34,350
Allowance for sales discounts returns and miscellaneous claims	1,218	20
Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	26,670
Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	12,306
Other
Disaggregation of Revenue [Line Items]
Revenues	141
Footwear
Disaggregation of Revenue [Line Items]
Revenues	25,880
Apparel
Disaggregation of Revenue [Line Items]
Revenues	11,668
Equipment
Disaggregation of Revenue [Line Items]
Revenues	1,428
Other
Disaggregation of Revenue [Line Items]
Revenues	141
Operating Segments | NIKE Brand
Disaggregation of Revenue [Line Items]
Revenues	37,218
Operating Segments | NIKE Brand | Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	25,423
Operating Segments | NIKE Brand | Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	11,753
Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	42
Operating Segments | NIKE Brand | Footwear
Disaggregation of Revenue [Line Items]
Revenues	24,222
Operating Segments | NIKE Brand | Apparel
Disaggregation of Revenue [Line Items]
Revenues	11,550
Operating Segments | NIKE Brand | Equipment
Disaggregation of Revenue [Line Items]
Revenues	1,404
Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	42
Operating Segments | Converse
Disaggregation of Revenue [Line Items]
Revenues	1,906
Operating Segments | Converse | Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	1,247
Operating Segments | Converse | Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	553
Operating Segments | Converse | Other
Disaggregation of Revenue [Line Items]
Revenues	106
Operating Segments | Converse | Footwear
Disaggregation of Revenue [Line Items]
Revenues	1,658
Operating Segments | Converse | Apparel
Disaggregation of Revenue [Line Items]
Revenues	118
Operating Segments | Converse | Equipment
Disaggregation of Revenue [Line Items]
Revenues	24
Operating Segments | Converse | Other
Disaggregation of Revenue [Line Items]
Revenues	106
Global Brand Divisions
Disaggregation of Revenue [Line Items]
Revenues	42
Global Brand Divisions | Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	0
Global Brand Divisions | Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	0
Global Brand Divisions | Other
Disaggregation of Revenue [Line Items]
Revenues	42
Global Brand Divisions | Footwear
Disaggregation of Revenue [Line Items]
Revenues	0
Global Brand Divisions | Apparel
Disaggregation of Revenue [Line Items]
Revenues	0
Global Brand Divisions | Equipment
Disaggregation of Revenue [Line Items]
Revenues	0
Global Brand Divisions | Other
Disaggregation of Revenue [Line Items]
Revenues	42
Corporate
Disaggregation of Revenue [Line Items]
Revenues	(7)	26	$ 75
Corporate | Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	0
Corporate | Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	0
Corporate | Other
Disaggregation of Revenue [Line Items]
Revenues	(7)
Corporate | Footwear
Disaggregation of Revenue [Line Items]
Revenues	0
Corporate | Apparel
Disaggregation of Revenue [Line Items]
Revenues	0
Corporate | Equipment
Disaggregation of Revenue [Line Items]
Revenues	0
Corporate | Other
Disaggregation of Revenue [Line Items]
Revenues	(7)
North America | Operating Segments | NIKE Brand
Disaggregation of Revenue [Line Items]
Revenues	15,902
North America | Operating Segments | NIKE Brand | Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	10,875
North America | Operating Segments | NIKE Brand | Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	5,027
North America | Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	0
North America | Operating Segments | NIKE Brand | Footwear
Disaggregation of Revenue [Line Items]
Revenues	10,045
North America | Operating Segments | NIKE Brand | Apparel
Disaggregation of Revenue [Line Items]
Revenues	5,260
North America | Operating Segments | NIKE Brand | Equipment
Disaggregation of Revenue [Line Items]
Revenues	597
North America | Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	0
Europe, Middle East & Africa | Operating Segments | NIKE Brand
Disaggregation of Revenue [Line Items]
Revenues	9,812
Europe, Middle East & Africa | Operating Segments | NIKE Brand | Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	7,076
Europe, Middle East & Africa | Operating Segments | NIKE Brand | Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	2,736
Europe, Middle East & Africa | Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	0
Europe, Middle East & Africa | Operating Segments | NIKE Brand | Footwear
Disaggregation of Revenue [Line Items]
Revenues	6,293
Europe, Middle East & Africa | Operating Segments | NIKE Brand | Apparel
Disaggregation of Revenue [Line Items]
Revenues	3,087
Europe, Middle East & Africa | Operating Segments | NIKE Brand | Equipment
Disaggregation of Revenue [Line Items]
Revenues	432
Europe, Middle East & Africa | Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	0
Greater China | Operating Segments | NIKE Brand
Disaggregation of Revenue [Line Items]
Revenues	6,208
Greater China | Operating Segments | NIKE Brand | Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	3,726
Greater China | Operating Segments | NIKE Brand | Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	2,482
Greater China | Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	0
Greater China | Operating Segments | NIKE Brand | Footwear
Disaggregation of Revenue [Line Items]
Revenues	4,262
Greater China | Operating Segments | NIKE Brand | Apparel
Disaggregation of Revenue [Line Items]
Revenues	1,808
Greater China | Operating Segments | NIKE Brand | Equipment
Disaggregation of Revenue [Line Items]
Revenues	138
Greater China | Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	0
Asia Pacific & Latin America | Operating Segments | NIKE Brand
Disaggregation of Revenue [Line Items]
Revenues	5,254
Asia Pacific & Latin America | Operating Segments | NIKE Brand | Sales to Wholesale Customers
Disaggregation of Revenue [Line Items]
Revenues	3,746
Asia Pacific & Latin America | Operating Segments | NIKE Brand | Sales through Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenues	1,508
Asia Pacific & Latin America | Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	0
Asia Pacific & Latin America | Operating Segments | NIKE Brand | Footwear
Disaggregation of Revenue [Line Items]
Revenues	3,622
Asia Pacific & Latin America | Operating Segments | NIKE Brand | Apparel
Disaggregation of Revenue [Line Items]
Revenues	1,395
Asia Pacific & Latin America | Operating Segments | NIKE Brand | Equipment
Disaggregation of Revenue [Line Items]
Revenues	237
Asia Pacific & Latin America | Operating Segments | NIKE Brand | Other
Disaggregation of Revenue [Line Items]
Revenues	0
Accrued liabilities
Disaggregation of Revenue [Line Items]
Allowance for sales discounts returns and miscellaneous claims	1,218
Prepaid expenses and other current assets
Disaggregation of Revenue [Line Items]
Reserve for sales returns	$ 410
Accounts receivable
Disaggregation of Revenue [Line Items]
Reserve for sales returns, net of estimated cost of inventory for product returns		$ 675