Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($)		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Amount of income (loss) related to the effective portion of cash flow hedges recognized in other comprehensive loss	[1]	$ 1,306,000	$ (26,839,000)
Amounts reclassified from accumulated other comprehensive income into interest expense	[1]	2,212,000	2,781,000
Unconsolidated Joint Ventures [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Amounts reclassified from accumulated other comprehensive income into interest expense		0	0
Amount of (loss) income related to unconsolidated joint ventures recognized in other comprehensive loss	[1],[2]	$ (194,000)	$ 86,000

[1] Net of amount attributable to the noncontrolling interests in the Operating Partnership.

[2] Balance held in accumulated other comprehensive income (loss) relates to foreign currency translation adjustments. No amounts were reclassified from accumulated other comprehensive income (loss) during any of the periods set forth above.