Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Schedule of Debt

		Weighted Average
		Interest Rate at			Balance at December 31,
(Amounts in thousands)		December 31, 2014			2014		2013
Mortgages Payable:
	Fixed rate		4.46%	$	6,499,396	$	6,439,371
	Variable rate		2.20%		1,763,769		691,860
			3.98%	$	8,263,165	$	7,131,231
Unsecured Debt:
	Senior unsecured notes		3.89%	$	1,347,159	$	1,350,855
	Unsecured revolving credit facilities		-		-		295,870
			3.89%	$	1,347,159	$	1,646,725

Schedule of Maturities of Long-Term Debt Table Text Block

				Senior Unsecured
				Debt and
(Amounts in thousands)				Revolving Credit
Year Ending December 31,		Mortgages Payable		Facilities
2015	$	407,229	$	500,000
2016		1,399,378		-
2017		609,680		-
2018		240,674		-
2019		979,197		450,000
Thereafter		4,624,897		400,000