The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624177-113959

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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- Definition

Amount of gain (loss) from the ineffectiveness of the hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
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Derivative and Hedging Activities (Effect of Derivative Instruments on the Consolidated Statement of Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	$ (9,300)		$ (9,300)
Cash Flow Hedging [Member]
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(2,350)	$ 4,786	(11,173)	$ (1,710)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(2,334)	(2,942)	(5,371)	(5,835)
Consolidated Properties [Member] \| Cash Flow Hedging [Member] \| Interest Rate Contract [Member] \| Other comprehensive income [Member]
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(1,557)	2,745	(7,299)	(1,792)
Consolidated Properties [Member] \| Cash Flow Hedging [Member] \| Interest Rate Contract [Member] \| Interest expense [Member]
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(1,494)	(1,817)	(3,011)	(3,587)
Unconsolidated Properties [Member] \| Cash Flow Hedging [Member] \| Interest Rate Contract [Member] \| Other comprehensive income [Member]
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(603)	2,041	(3,394)	82
Unconsolidated Properties [Member] \| Cash Flow Hedging [Member] \| Interest Rate Contract [Member] \| Equity Method Investments [Member]
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(962)	$ (1,125)	(1,936)	(2,248)
Unconsolidated Properties [Member] \| Cash Flow Hedging [Member] \| Cross Currency Interest Rate Contract [Member] \| Other comprehensive income [Member]
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(190)		(480)
Unconsolidated Properties [Member] \| Cash Flow Hedging [Member] \| Cross Currency Interest Rate Contract [Member] \| Equity Method Investments [Member]
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	122		$ (424)
Unsecured Debt [Member]
Effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income [Abstract]
Derivative, Net Hedge Ineffectiveness Gain (Loss)	$ 200			$ (200)