Balance Sheet Information (Details) (USD $) In Millions, unless otherwise specified	Apr. 30, 2012	Apr. 30, 2011
Other current assets:
Prepaid taxes	$ 120	$ 129
Other	68	89
Other current assets	188	218
Property, plant, and equipment:
Land	70	69
Buildings	330	317
Equipment	454	446
Construction in process	21	11
Property, Plant and Equipment	875	843
Less accumulated depreciation	476	450
Property, plant, and equipment, net	399	393
Accounts payable and accrued expenses:
Accounts payable, trade	120	126
Accrued expenses:
Advertising	64	72
Compensation and commissions	87	81
Excise and other non-income taxes	58	54
Self-insurance claims	10	11
Postretirement benefits	6	6
Interest	5	7
Other	36	55
Accrued expenses	266	286
Accounts payable and accrued expenses	$ 386	$ 412