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Adoption of New Accounting Standard
 9 Months Ended
Jul. 31, 2013
Accounting Changes And Error Corrections [Abstract]  
Adoption of New Accounting Standard
9. Adoption of New Accounting Standard

The Trust adopted “Comprehensive Income (Topic 220): Presentation of Comprehensive Income” (“ASU No. 2011-05”) in the 2013 first quarter which amends existing guidance by allowing only two options for presenting the components of net income and other comprehensive income: (1) in a single continuous financial statement, a statement of comprehensive income or (2) in two separate but consecutive financial statements, an income statement followed by a separate statement of other comprehensive income. ASU No. 2011-05 required retrospective application. The adoption of these updates changed the order in which certain financial information is presented, but did not have any other impact on the financial statements.