Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Income Statement [Abstract]
Sales	$ 1,222	$ 1,178	$ 3,481	$ 3,404
Excise taxes	311	279	832	750
Net sales	911	899	2,649	2,654
Cost of sales	361	342	1,053	980
Gross profit	550	557	1,596	1,674
Advertising expenses	121	104	278	308
Selling, general, and administrative expenses	157	153	460	475
Gain on sale of business	0	0	(127)	0
Other expense (income), net	(9)	(4)	(13)	(13)
Operating income	281	304	998	904
Non-operating postretirement expense	1	1	4	3
Interest income	0	(1)	(1)	(4)
Interest expense	21	20	61	62
Income before income taxes	259	284	934	843
Income taxes	40	53	151	144
Net income	$ 219	$ 231	$ 783	$ 699
Earnings per share:
Basic (dollars per share)	$ 0.46	$ 0.48	$ 1.64	$ 1.46
Diluted (dollars per share)	$ 0.45	$ 0.48	$ 1.63	$ 1.45