Subsequent Events (Details) - Subsequent Event [Member] $ in Millions		1 Months Ended
	Oct. 05, 2015 USD ($)	Nov. 03, 2015 USD ($) property
Subsequent Event [Line Items]
Number of properties disposed of | property		56
Aggregate gross sales price		$ 436.4
Cash severance	$ 1.4
Red Lobster [Member]
Subsequent Event [Line Items]
Number of properties disposed of | property		51
Aggregate gross sales price		$ 204.4
AT&T [Member]
Subsequent Event [Line Items]
Number of properties disposed of | property		1
Aggregate gross sales price		$ 226.2