Leases (Supplemental Balance Sheet Information Related to Leases) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Right of use assets:
Right of use assets, net	$ 465,866	$ 536,433
Lease liabilities:
Operating leases	311,164	364,803
Financing leases	107,102	108,890
Total	$ 418,266	$ 473,693
Weighted average remaining lease term (years):
Operating leases	46 years 10 months 24 days	46 years
Finance leases	17 years 8 months 12 days	15 years 10 months 24 days
Weighted average discount rate:
Operating leases	5.02%	5.00%
Finance leases	5.16%	5.18%
Real Estate
Right of use assets:
Operating leases	$ 310,017	$ 374,217
Finance leases	155,849	162,216
Right of use assets, net	465,866	536,433
Corporate
Right of use assets:
Operating leases	9,624	12,474
Real Estate and Corporate
Right of use assets:
Right of use assets, net	$ 475,490	$ 548,907