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Significant Accounting Policies (Tables) | 12 Months Ended
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Apr. 30, 2012
Significant Accounting Policies [Abstract] |
Summary Of Inventory Values |
|  | Fiscal 2012 |  | Fiscal 2011
Gasoline |  | 83,063 |  | 81,964
Merchandise |  | 87,731 |  | 77,236
Total inventory |  | 170,794 |  | 159,200
Schedule Of Depreciation Of Property, Plant And Equipment |
Buildings |  | 25-40 years |
Machinery and equipment |  | 5-30 years |
Leasehold interest in property and equipment |  | Lesser of term of lease or life of asset |
Leasehold improvements |  | Lesser of term of lease or life of asset |

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