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Equity - Dividends Narrative (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Class of Stock
Common dividends declared (in usd per share)	$ 0.1250	$ 0.1250	$ 0.3750	$ 0.3750
6.25% series A cumulative redeemable preferred units of the Operating Partnership
Class of Stock
Preferred dividends declared (dollars per share)	$ 0.3906
Series B Preferred Stock
Class of Stock
Preferred dividends declared (dollars per share)	$ 0.5234

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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