Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Income Statement [Abstract]
Sales	$ 929	$ 856
Excise taxes	206	195
Net sales	723	661
Cost of sales	230	208
Gross profit	493	453
Advertising expenses	89	82
Selling, general, and administrative expenses	161	163
Other expense (income), net	(1)	(5)
Operating income	244	213
Interest income	1	1
Interest expense	16	13
Income before income taxes	229	201
Income taxes	51	57
Net income	$ 178	$ 144
Earnings per share:
Basic (dollars per share)	$ 0.46	$ 0.37
Diluted (dollars per share)	0.46	0.36
Cash dividends per common share:
Declared (dollars per share)	0.365	0.34
Paid (dollars per share)	$ 0.1825	$ 0.17