MORTGAGES, NOTES AND LOANS PAYABLE - Debt Summarized (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Mortgages, notes and loans payable
Total mortgages, notes and loans payable	$ 2,123,617,000us-gaap_NotesAndLoansPayable	$ 1,993,470,000us-gaap_NotesAndLoansPayable
Secured Debt [Member]
Mortgages, notes and loans payable
Fixed-rate debt:	1,030,671,000	1,008,165,000
Variable-rate debt:	1,074,210,000	962,916,000
Amount of variable-rate debt swapped to fixed rate		172,000,000
Bonds [Member]
Mortgages, notes and loans payable
Fixed-rate debt:	$ 18,736,000	$ 22,389,000

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Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

+ References

No definition available.

+ Details

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- Definition

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 set, unchanging rate.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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).

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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- Details

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- Details

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