Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Income Statement [Abstract]
Net sales	$ 1,078	$ 1,027	$ 3,053	$ 2,919
Excise taxes	296	280	751	730
Cost of sales	250	240	717	694
Gross profit	532	507	1,585	1,495
Advertising expenses	116	111	329	309
Selling, general, and administrative expenses	161	162	479	470
Other expense (income), net	0	(3)	(6)	(5)
Operating income	255	237	783	721
Interest income	0	1	2	2
Interest expense	6	9	20	19
Income before income taxes	249	229	765	704
Income taxes	72	72	239	226
Net income	$ 177	$ 157	$ 526	$ 478
Earnings per share:
Basic	$ 0.83	$ 0.74	$ 2.46	$ 2.24
Diluted	$ 0.82	$ 0.73	$ 2.45	$ 2.22
Cash dividends per common share:
Declared	$ 0.580	$ 4.510	$ 1.090	$ 4.977
Paid	$ 0.290	$ 4.255	$ 0.800	$ 4.722