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

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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.

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No definition available.

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For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

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The net carrying value of property collateralizing the notes and mortgages payable

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Notes And Loans Payable Gross

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Unsecured Debt, Gross

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Debt (Summary of Debt) (Details) - USD ($)	Dec. 31, 2015	Oct. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Deferred financing costs, net and other	$ (7,720,000)		$ (11,549,000)
Total, net	9,513,713,000		8,187,843,000
Unsecured debt, net	844,159,000		1,342,494,000
Unsecured term loan, net	183,138,000		0
Revolving credit facilities	550,000,000		0
Unsecured Debt And Revolving Credit Facility	1,577,297,000		1,342,494,000
Debt Fiscal Year Maturity [Abstract]
Collateral Property Net Carrying Value	9,600,000,000
Mortgages Payable [Member]
Debt Instrument [Line Items]
Mortgages payable, gross	9,614,838,000		8,261,055,000
Deferred financing costs, net and other	$ (101,125,000)		(73,212,000)
Interest Rate, End of Period (in percentage)	3.56%
Debt Fiscal Year Maturity [Abstract]
2016	$ 1,095,366,000
2017	411,113,000
2018	441,354,000
2019	379,122,000
2020	2,835,451,000
Thereafter	4,452,432,000
Mortgages Payable [Member] \| Fixed Rate [Member]
Debt Instrument [Line Items]
Mortgages payable, gross	$ 6,356,634,000		6,497,286,000
Interest Rate, End of Period (in percentage)	4.29%
Mortgages Payable [Member] \| Variable Rate [Member]
Debt Instrument [Line Items]
Mortgages payable, gross	$ 3,258,204,000		1,763,769,000
Interest Rate, End of Period (in percentage)	2.14%
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Deferred financing costs, net and other	$ (5,841,000)		(7,506,000)
Unsecured debt, gross	$ 850,000,000		1,350,000,000
Interest Rate, End of Period (in percentage)	3.68%
Term Loan [Member]
Debt Instrument [Line Items]
Deferred financing costs, net and other	$ (4,362,000)		0
Unsecured debt, gross	$ 187,500,000		0
Revolving credit facilities		$ 187,500,000
Interest Rate, End of Period (in percentage)	1.40%
Unsecured Revolving Credit Facilities [Member]
Debt Instrument [Line Items]
Revolving credit facilities	$ 550,000,000		$ 0
Interest Rate, End of Period (in percentage)	1.38%
Senior Unsecured Debt And Unsecured Revolving Credit Facilities [Member]
Debt Fiscal Year Maturity [Abstract]
2016	$ 550,000,000
2017	0
2018	0
2019	450,000,000
2020	187,500,000
Thereafter	$ 400,000,000