Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Tenants	Dec. 31, 2014 USD ($) Tenants	Dec. 31, 2013 USD ($) Tenants
Operating Leases Future Minimum Payments Receivable [Abstract]
2016	$ 1,633,615
2017	1,686,056
2018	1,644,440
2019	1,496,805
2020	1,349,724
Thereafter	8,103,382
Percentage Rent	5,760	$ 6,343	$ 7,344
Operating Leases Future Minimum Payments Due [Abstract]
2016	33,265
2017	34,831
2018	35,317
2019	35,826
2020	36,353
Thereafter	$ 1,557,541
Lessee Leasing Arrangements Operating Leases Term Of Contract	30 years
Rent Expense	$ 38,887	$ 36,315	$ 35,913
Capital Leases Future Minimum Payments Due [Abstract]
2016	12,500
2017	12,500
2018	12,500
2019	12,500
2020	12,500
Thereafter	322,292
Total Minimum Obligations	384,792
Interest Portion	(144,792)
Present Value Of Net Minimum Payments	240,000
Property Leased Under Capital Leases Cost	$ 424,369
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Number Of Tenants Contributing Ten Percent Or More Of Total Revenues | Tenants	0	0	0
Percentage Of Minimum Revenue Threshold Contributed By One Tenant	10.00%	10.00%	10.00%