Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2015
Income Statement [Abstract]
Revenues	$ 34,350	$ 32,376	$ 30,601
Cost of sales	19,038	17,405	16,534
Gross profit	15,312	14,971	14,067
Demand creation expense	3,341	3,278	3,213
Operating overhead expense	7,222	7,191	6,679
Total selling and administrative expense	10,563	10,469	9,892
Interest expense (income), net	59	19	28
Other (income) expense, net	(196)	(140)	(58)
Income before income taxes	4,886	4,623	4,205
Income tax expense	646	863	932
NET INCOME	$ 4,240	$ 3,760	$ 3,273
Earnings per common share:
Basic (in dollars per share)	$ 2.56	$ 2.21	$ 1.90
Diluted (in dollars per share)	2.51	2.16	1.85
Dividends declared per common share (in dollars per share)	$ 0.70	$ 0.62	$ 0.54