Real Estate (Classification of Investment Property Leases) (Details) - Jun. 30, 2015	property option lease
Property Subject to or Available for Operating Lease [Line Items]
Weighted average remaining lease term (years)	11 years 4 months 24 days
Number of renewal options, or more | option	1
Operating
Property Subject to or Available for Operating Lease [Line Items]
Number of properties leased-operating | lease	2,173
Direct financing
Property Subject to or Available for Operating Lease [Line Items]
Number of properties leased-direct financing	11
Building portion – direct financing/land portion – operating
Property Subject to or Available for Operating Lease [Line Items]
Number of properties leased-building portion-direct financing land portion-operating	1