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- Definition

Current Market rate of Unsecured lines of Credit

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- Definition

Debt Instrument, Estimated Trading Values, Percent of Face Value, Maximum

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Debt Instrument, Estimated Trading Values, Percent of Face Value, Minimum

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- Definition

Number of secured loans assumed in property acquisition

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- Definition

Spread Over LIBOR

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- Definition

Weighted Average Interest Rate Secured Loans Assumed In Property Acquisition

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- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

+ References

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- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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-Publisher SEC

-Name Regulation S-X (SX)

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- Definition

When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

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When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date.

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- Definition

The fair value of liabilities assumed in noncash investing or financing activities.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Reflects when the credit facility terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter).

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-Publisher FASB

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- Definition

Increase for additional borrowings on the credit facility during the period.

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- Definition

The effective interest rate during the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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-Glossary Financing Activities

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Indebtedness (Narrative) (Details) (USD $)	9 Months Ended				9 Months Ended			1 Months Ended		3 Months Ended	9 Months Ended
Indebtedness (Narrative) (Details) (USD $)	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Minimum [Member] Fixed Rate Secured Debt [Member]	Sep. 30, 2011 Maximum [Member] Fixed Rate Secured Debt [Member]	Sep. 30, 2011 Unsecured Line of Credit - DRLP [Member]	Sep. 30, 2011 Unsecured Line of Credit - Consolidated Subsidiary [Member]	Sep. 30, 2011 Fixed Rate Secured Debt [Member] loans years	Aug. 31, 2011 Fixed Rate Unsecured Debt [Member]	Mar. 31, 2011 Fixed Rate Unsecured Debt [Member]	Sep. 30, 2011 Fixed Rate Unsecured Debt [Member]	Sep. 30, 2011 Fixed Rate Unsecured Debt [Member]	Sep. 30, 2011 Variable Rate Unsecured Debt [Member]
Estimated rate of fixed rate secured debt, minimum							2.70%
Estimated rate of fixed rate secured debt, maximum							6.20%
Secured loans acquired							11
Face value from acquisition							$ 143,700,000
Liabilities assumed	150,042,000	332,982,000					145,100,000
Assumed weighted average interest rate							5.75%
Weighted average remaining term (years)							5.2
Estimated effective interest rate of loan			4.40%	5.81%				5.69%	6.96%
Unsecured notes bearing variable interest												21,000,000
Repayment of corporate unsecured debt	166,346,000	392,181,000						122,500,000	42,500,000
Estimated trading value of fixed rate unsecured debt, minimum percentage										100.00%
Estimated trading value of fixed rate unsecured debt, maximum percentage										115.00%
Debt instrument covenant compliance					we were in compliance with all covenants under this line of credit.						We were in compliance with all such covenants as of September 30, 2011
Borrowing capacity of unsecured lines of credit					850,000,000	30,000,000
Spread over LIBOR					2.75%	0.85%
Line of credit balance					284,000,000	20,293,000
Interest rate on borrowings					2.98%	1.09%
Maturity date of unsecured line of credit					February 2013	July 2012
Additional borrowings under unsecured lines of credit					200,000,000
Maximum borrowing capacity of unsecured lines of credit					$ 1,050,000,000
Current market rate of unsecured lines of credit						1.74%