Operating Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) item	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Operating leases
Number of properties | item	4,538
Number of U.S. states where properties are owned | item	49
Single-tenant properties | item	4,519
Single-tenant properties (as a percent)	99.60%
Vacant properties available for lease or sale | item	71
Percentage rents	$ 4,500	$ 3,600	$ 2,900
Minimum future annual rents to be received on the operating leases
2016	998,632
2017	984,748
2018	960,857
2019	906,498
2020	857,543
Thereafter	5,539,698
Total	$ 10,247,976
Crest Net Lease, Inc. (Crest)
Operating leases
Number of properties | item	8