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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES, Reclassifications, Proceeds from Financing Liability and Variable Interest Entity (Details) $ in Millions |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 12, 2014 Partners | Nov. 27, 2012 | Jul. 31, 2015 Property | Jul. 31, 2014 USD ($) | Jan. 31, 2016 USD ($) | Jul. 30, 2014 USD ($)
Proceeds from Financing Liability [Abstract] |  |  |  |  |  |
Proceeds from sale of property |  |  |  | $ 7.9 |  |
Contract for deed |  |  |  |  |  | $ 29.0
Sale lease-back recorded in other liabilities |  |  |  |  |  | $ 7.9
Financing liability balance |  |  |  |  | $ 7.9 |
Commercial Office [Member] |  |  |  |  |  |
Reclassifications [Abstract] |  |  |  |  |  |
Number of real estate properties classified as held for sale in discontinued operations | Property |  |  | 48 |  |  |
Commercial Retail Properties [Member] |  |  |  |  |  |
Reclassifications [Abstract] |  |  |  |  |  |
Number of real estate properties classified as held for sale in discontinued operations | Property |  |  | 17 |  |  |
Commercial Healthcare [Member] |  |  |  |  |  |
Reclassifications [Abstract] |  |  |  |  |  |
Number of real estate properties classified as held for sale in discontinued operations | Property |  |  | 1 |  |  |
IRET - Minot Apartments, LLC [Member] |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage of ownership in VIE |  |  |  |  | 51.00% |
IRET - Minot Apartments, LLC [Member] | Third Party Debt [Member] |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage of project financed |  | 69.00% |  |  |  |
IRET - Minot Apartments, LLC [Member] | Debt from IRET [Member] |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage of project financed |  | 7.00% |  |  |  |
IRET - Minot Apartments, LLC [Member] | Real Estate Development Company [Member] |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage of ownership in VIE |  |  |  |  | 49.00% |
IRET - 71 France, LLC [Member] |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Estimated total costs of joint venture project |  |  |  |  | $ 73.3 |
Number of other partners in joint venture | Partners | 2 |  |  |  |  |
Percentage of ownership in VIE |  |  |  |  | 52.60% |
Threshold in-service period of project |  |  |  |  | 24 months |
IRET - 71 France, LLC [Member] | Third Party Debt [Member] |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage of project financed |  |  |  |  | 69.00% |
IRET - 71 France, LLC [Member] | Debt from IRET [Member] |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage of project financed |  |  |  |  | 7.00% |
IRET - 71 France, LLC [Member] | Real Estate Development Company [Member] |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage of ownership in VIE |  |  |  |  | 47.40% |

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