Operating Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) project lease state
Property Subject to or Available for Operating Lease [Line Items]
Number of real estate properties | project	90
Number of states in which entity has properties | state	12
Number of leases | lease	2,700
Percent of annualized base rent	2.90%
Operating Leases, Future Minimum Payments Receivable [Abstract]
2016	$ 518,325
2017	470,881
2018	406,311
2019	348,429
2020	288,395
Thereafter	1,759,140
Total	$ 3,791,481
Retail and commercial | Minimum
Property Subject to or Available for Operating Lease [Line Items]
Operating lease, term	3 years
Retail and commercial | Maximum
Property Subject to or Available for Operating Lease [Line Items]
Operating lease, term	10 years
Residential | Maximum
Property Subject to or Available for Operating Lease [Line Items]
Operating lease, term	1 year