DISCONTINUED OPERATIONS, Properties Disposed of or Held for Sale (Details) - Property |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jan. 31, 2016 |
Jul. 31, 2015 |
Jan. 31, 2015 |
Jan. 31, 2016 |
|
| Office Properties [Member] | ||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Number of real estate properties classified as held for sale in discontinued operations | 48 | |||
| Number of properties sold | 1 | 48 | ||
| Retail Properties [Member] | ||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Number of real estate properties classified as held for sale in discontinued operations | 17 | |||
| Number of properties sold | 3 | 1 | 17 | |
| Healthcare Properties [Member] | ||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Number of real estate properties classified as held for sale in discontinued operations | 1 | |||
| Number of properties sold | 1 | |||