Debt (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Schedule of Debt [Table Text Block]

The following is a summary of our debt:

(Amounts in thousands)			Interest Rate at		Balance at
			June 30, 2016		June 30, 2016		December 31, 2015
Mortgages Payable:
	Fixed rate			4.17%	$	6,571,398	$	6,356,634
	Variable rate			2.28%		3,281,935		3,258,204
		Total		3.54%		9,853,333		9,614,838
	Deferred financing costs, net and other					(106,515)		(101,125)
		Total, net			$	9,746,818	$	9,513,713
Unsecured Debt:
	Senior unsecured notes			3.68%	$	850,000	$	850,000
	Deferred financing costs, net and other					(5,132)		(5,841)
		Senior unsecured notes, net				844,868		844,159
	Unsecured term loan			1.61%		375,000		187,500
	Deferred financing costs, net and other					(3,545)		(4,362)
		Unsecured term loan, net				371,455		183,138
	Unsecured revolving credit facilities			1.51%		115,630		550,000
		Total, net			$	1,331,953	$	1,577,297