Debt (Tables)

6 Months Ended

Jun. 30, 2015

Debt Disclosure [Abstract]

Schedule of Debt

(Amounts in thousands)		Interest Rate at		Balance at
		June 30, 2015		June 30, 2015		December 31, 2014
Mortgages Payable:
	Fixed rate		4.43%	$	6,349,878	$	6,499,396
	Variable rate		2.16%		2,212,436		1,763,769
			3.85%	$	8,562,314	$	8,263,165
Unsecured Debt:
	Senior unsecured notes		3.68%	$	847,463	$	1,347,159
	Revolving credit facility debt		1.24%		400,000		-
			2.90%	$	1,247,463	$	1,347,159