Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2010
Consolidated Statements of Operations [Abstract]
Net sales	$ 3,614	$ 3,404	$ 3,226
Excise taxes	891	818	757
Cost of sales	928	862	858
Gross profit	1,795	1,724	1,611
Advertising expenses	395	366	350
Selling, general, and administrative expenses	610	574	539
Amortization expense	3	5	5
Other expense (income), net	(1)	(76)	7
Operating income	788	855	710
Interest income	3	3	3
Interest expense	31	29	31
Income before income taxes	760	829	682
Income taxes	247	257	233
Net income	$ 513	$ 572	$ 449
Earnings per share:
Basic	$ 3.59	$ 3.92	$ 3.03
Diluted	$ 3.56	$ 3.90	$ 3.02