Total number of land parcel or parcels disposed of to unaffiliated third parties during the period.

No definition available.

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- Definition

The total number of rental properties that the Company disposed of to unaffiliated parties during the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

Total number of rental units associated with rental properties that the company disposed of to unaffiliated third parties during the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

The percentage rate used to calculate dividend payments on preferred shares/preference units.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

The cash inflow from distributions of capital received from unconsolidated joint ventures ( i.e proportionate share of proceeds and/or gain/loss from property sales).

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the sale of real estate investment property.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Redemption of Series P Preference Units

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Reduction in other liabilities due to units issued to noncontrolling interests as a result of an acquisition and/or the buy-out of a joint venture partner's interest during the period.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).

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No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The expense charged against earnings to eliminate the capitalized costs of projects that have been terminated during the reporting period, which is added back to net income when calculating cash provided by (used in) operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This element represents a sum total of expenses not separately reflected on the income statement for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.7)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4,6)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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- Details

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Subsequent Events/Other (Details)	1 Months Ended	3 Months Ended		6 Months Ended
Subsequent Events/Other (Details)	Jul. 29, 2016 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) property	Jun. 30, 2015 USD ($)
Other [Line Items]
Disposed Properties \| property				83
Apartment Units				26,890
Sales Price				$ 6,454,858,000
Distributions from unconsolidated entities – return of capital				524,000	$ 26,147,000
Business Combination, Acquisition Related Costs				1,400,000	200,000
Noncash Project Abandonment Costs				2,563,000	1,651,000
Other Expenses				4,000,000	1,800,000
Interest and other income		$ 56,525,000	$ 6,481,000	59,583,000	6,650,000
Litigation Settlement, Amount				1,400,000	5,800,000
Real Estate [Member]
Other [Line Items]
Noncash Project Abandonment Costs				$ 2,600,000	$ 1,600,000
Subsequent Event [Member]
Other [Line Items]
Repayments Of Long-term Debt	$ 8,600,000
Rental Properties – Consolidated
Other [Line Items]
Disposed Properties \| property				83
Apartment Units				26,890
Sales Price				$ 6,427,403,000
Rental Properties – Consolidated \| Subsequent Event [Member]
Other [Line Items]
Disposed Properties	1
Apartment Units	44
Sales Price	$ 22,000,000
Land [Member]
Other [Line Items]
Sales Price				$ 27,455,000
Disposed Land Parcels \| property				2
Land [Member] \| Subsequent Event [Member]
Other [Line Items]
Sales Price	$ 30,000,000
Disposed Land Parcels	1
Partially Owned Properties – Unconsolidated \| Subsequent Event [Member]
Other [Line Items]
Disposed Properties	1
Apartment Units	336
Sales Price	$ 74,500,000
Repayments Of Long-term Debt	29,100,000
Distributions from unconsolidated entities – return of capital	$ 11,900,000
Military Housing [Member]
Other [Line Items]
Apartment Units				5,161
Sales Price				$ 63,300,000
Interest and other income				52,400,000
Series P [Domain]
Other [Line Items]
Redemption of Series P Preference Units				18,400,000
Reduction In Other Liabilities				$ 18,400,000
Series P [Domain]
Other [Line Items]
Preferred Stock Preference Units Dividend Rate Percentage				3.00%
Business Acquisition, Percentage of Voting Interests Acquired		95.00%		95.00%