Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2014
Income Statement [Abstract]
Net sales	$ 4,011	$ 4,096	$ 3,946
Excise taxes	922	962	955
Cost of sales	945	951	913
Gross profit	2,144	2,183	2,078
Advertising expenses	417	437	436
Selling, general, and administrative expenses	688	697	686
Gain on sale of business	(485)	0	0
Other expense (income), net	(9)	22	(15)
Operating income	1,533	1,027	971
Interest income	2	2	2
Interest expense	46	27	26
Income before income taxes	1,489	1,002	947
Income taxes	422	318	288
Net income	$ 1,067	$ 684	$ 659
Earnings per share:
Basic (dollars per share)	$ 5.26	$ 3.23	$ 3.08
Diluted (dollars per share)	$ 5.22	$ 3.21	$ 3.06