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Property, Plant and Equipment Property, plant and equipment useful life (Details) | 12 Months Ended
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Oct. 31, 2014
Minimum [Member] | Building and Building Improvements [Member] |
Useful lives [Line Items] |
Property, Plant and Equipment, Estimated Useful Lives | 10
Minimum [Member] | Machinery and Equipment [Member] |
Useful lives [Line Items] |
Property, Plant and Equipment, Estimated Useful Lives | 3
Minimum [Member] | Furniture and Fixtures [Member] |
Useful lives [Line Items] |
Property, Plant and Equipment, Estimated Useful Lives | 10
Minimum [Member] | Power plants for use under PPA's [Member] |
Useful lives [Line Items] |
Property, Plant and Equipment, Estimated Useful Lives | 3
Maximum [Member] | Building and Building Improvements [Member] |
Useful lives [Line Items] |
Property, Plant and Equipment, Estimated Useful Lives | 26
Maximum [Member] | Machinery and Equipment [Member] |
Useful lives [Line Items] |
Property, Plant and Equipment, Estimated Useful Lives | 8
Maximum [Member] | Furniture and Fixtures [Member] |
Useful lives [Line Items] |
Property, Plant and Equipment, Estimated Useful Lives | 10
Maximum [Member] | Power plants for use under PPA's [Member] |
Useful lives [Line Items] |
Property, Plant and Equipment, Estimated Useful Lives | 10

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6539997&loc=d3e1205-110223 + Details
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