Earnings Per Share - Reconciliation from Basic Earnings Per Share to Diluted Earnings Per Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Aug. 31, 2013	Aug. 31, 2012
Determination of shares:
Weighted average common shares outstanding (in shares)	889.4	905.6
Assumed conversion of dilutive stock options and awards (in shares)	21.3	17.2
DILUTED WEIGHTED AVERAGE COMMON SHARES OUTSTANDING	910.7	922.8
Earnings per share from continuing operations:
Basic earnings per common share (in dollars per share)	$ 0.88	$ 0.65
Diluted earnings per common share (in dollars per share)	$ 0.86	$ 0.63
Earnings per share from discontinued operations:
Basic earnings per common share (in dollars per share)	$ 0.00	$ (0.03)
Diluted earnings per common share (in dollars per share)	$ 0.00	$ (0.02)
Basic earnings per common share for NIKE, Inc. (in dollars per share)	$ 0.88	$ 0.62
Diluted earnings per common share for NIKE, Inc. (in dollars per share)	$ 0.86	$ 0.61

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