Equity, Capital and Other Interests Redeemable (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2015	Dec. 31, 2014
Redeemable Noncontrolling Interests Operating Partnership	$ 522,585	$ 500,733
Change in market value of Redeemable Noncontrolling Interests – Operating Partnership	20,262
Change in carrying value of Redeemable Noncontrolling Interests – Operating Partnership	1,590
ERPOP [Member]
Redeemable Limited Partners	522,585	$ 500,733
Limited Partners Change In Redemption Value	20,262
Limited Partners Change In Carrying Value	$ 1,590

Change in the value of each type or class of stock classified as temporary equity during the period. The redemption requirement does not constitute an unconditional obligation that will be settled in a variable number of shares constituting a monetary value predominantly indexed to (a) a fixed monetary amount known at inception, (b) an amount inversely correlated with the residual value of the entity, or (c) an amount determined by reference to something other than the fair value of issuer's stock. Does not include mandatorily redeemable stock. The exception is if redemption is required upon liquidation or termination of the reporting entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (27)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=27011957&loc=d3e177068-122764

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