Leases (Future Minimum Lease Payments) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020	$ 316,050
2021	299,256
2022	274,846
2023	244,033
2024	212,824
Thereafter	1,090,210
Total operating lease payments	2,437,219
Less: present value discount	465,861
Total operating lease liabilities	1,971,358
Less: current portion of operating lease liabilities	316,061	$ 0
Operating lease liabilities, less current portion	1,655,297	$ 0
Related Parties
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020	4,765
2021	4,347
2022	3,590
2023	3,218
2024	1,472
Thereafter	2,801
Total operating lease payments	20,193
Less: present value discount	2,049
Total operating lease liabilities	18,144
Less: current portion of operating lease liabilities	4,765
Operating lease liabilities, less current portion	13,379
Non Related Parties
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020	311,285
2021	294,909
2022	271,256
2023	240,815
2024	211,352
Thereafter	1,087,409
Total operating lease payments	2,417,026
Less: present value discount	463,812
Total operating lease liabilities	1,953,214
Less: current portion of operating lease liabilities	311,296
Operating lease liabilities, less current portion	$ 1,641,918