Balance Sheet Information (Details) (USD $) In Millions, unless otherwise specified	Apr. 30, 2014	Apr. 30, 2013
Other current assets:
Prepaid taxes	$ 172	$ 123
Other	84	90
Other current assets	256	213
Property, plant, and equipment:
Land	72	70
Buildings	381	351
Equipment	534	487
Construction in process	67	48
Property, plant and equipment, gross	1,054	956
Less accumulated depreciation	528	506
Property, plant, and equipment, net	526	450
Accounts payable and accrued expenses:
Accounts payable, trade	134	133
Accrued expenses:
Advertising and promotion	107	85
Compensation and commissions	111	106
Excise and other non-income taxes	57	65
Self-insurance losses	10	11
Postretirement benefits	7	6
Interest	7	9
Other	41	36
Accrued expenses	340	318
Accounts payable and accrued expenses	474	451
Deferred benefit – tax (Note 11)	90	0
Other	77	68
Other Liabilities, Noncurrent	$ 167	$ 68