Revenue Recognition (Policy)	3 Months Ended
Jul. 31, 2012
Revenue Recognition [Abstract]
Revenue Recognition	The Company recognizes retail sales of gasoline, grocery and general merchandise, prepared food and fountain and commissions on lottery, prepaid phone cards, and video rentals at the time of the sale to the customer. Vendor rebates in the form of rack display allowances are treated as a reduction in cost of sales and are recognized pro rata over the period covered by the applicable rebate agreement. Vendor rebates in the form of billbacks are treated as a reduction in cost of sales and are recognized at the time the product is sold.

- Definition

Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.

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