Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2016
Income Statement [Abstract]
Sales	$ 4,201	$ 3,857	$ 4,011
Excise taxes	953	863	922
Net sales	3,248	2,994	3,089
Cost of sales	1,046	973	945
Gross profit	2,202	2,021	2,144
Advertising expenses	414	383	417
Selling, general, and administrative expenses	765	667	688
Gain on sale of business	0	0	(485)
Other expense (income), net	(16)	(18)	(9)
Operating income	1,039	989	1,533
Interest income	6	3	2
Interest expense	68	59	46
Income before income taxes	977	933	1,489
Income taxes	260	264	422
Net income	$ 717	$ 669	$ 1,067
Earnings per share:
Basic (dollars per share)	$ 1.49	$ 1.38	$ 2.10
Diluted (dollars per share)	$ 1.48	$ 1.37	$ 2.09