Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Operating Leases
2021	$ 199,291
2022	205,411
2023	188,724
2024	176,626
2025	165,437
Thereafter	1,032,186
Total lease payments	1,967,675
Plus amount representing residual property value	0
Less imputed interest	(504,841)
Total	1,462,834
Finance Leases
2021	232,415
2022	221,058
2023	215,909
2024	213,186
2025	209,424
Thereafter	1,928,094
Total lease payments	3,020,086
Plus amount representing residual property value	17,331
Less imputed interest	(1,114,918)
Total	1,922,499
Total
2021	431,706
2022	426,469
2023	404,633
2024	389,812
2025	374,861
Thereafter	2,960,280
Total lease payments	4,987,761
Plus amount representing residual property value	17,331
Less imputed interest	(1,619,759)
Total	$ 3,385,333

Finance Lease, Residual Value of Leased Assets

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Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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