Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Income Statement [Abstract]
Sales	$ 1,283	$ 1,272	$ 2,466	$ 2,259
Excise taxes	289	287	566	521
Net sales	994	985	1,900	1,738
Cost of sales	404	404	757	692
Gross profit	590	581	1,143	1,046
Advertising expenses	104	95	194	157
Selling, general, and administrative expenses	165	155	333	303
Gain on sale of business	0	0	0	(127)
Other expense (income), net	(1)	1	5	(4)
Operating income	322	330	611	717
Non-operating postretirement expense	2	2	2	3
Interest income	(1)	(1)	(2)	(1)
Interest expense	20	20	41	40
Income before income taxes	301	309	570	675
Income taxes	65	69	142	111
Net income	$ 236	$ 240	$ 428	$ 564
Earnings per share:
Basic (dollars per share)	$ 0.49	$ 0.50	$ 0.89	$ 1.18
Diluted (dollars per share)	$ 0.49	$ 0.50	$ 0.89	$ 1.17