Organization and Background (Details)	9 Months Ended
Jun. 30, 2015
Corporate Joint Venture [Member] \| Property Acquisition [Member] \| Multi-family \| Maximum [Member]
Organization, background and significant accounting policies
Equity contribution in each transaction (as a percent)	80.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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