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v3.20.4

Summary of Significant Accounting Policies - Leases Narrative (Details) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2020 USD ($) lease renewal_option | Dec. 31, 2019 USD ($) | Jan. 01, 2019 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |
Renewal option | renewal_option |  |  | 1 |  |
Accounting Standards Update [Extensible List] | us-gaap:AccountingStandardsUpdate201602Member | us-gaap:AccountingStandardsUpdate201409Member |  |  |
Cumulative effect of new accounting principle in period of adoption | $ 1,862,463 | $ 2,285,134 | $ 1,136,729 | $ 1,464,227 |
Total minimum lease payments |  |  | $ 3,354,702 |  |
Number of leases not yet commenced | lease |  |  | 7 |  |
Total undiscounted lease payment |  |  | $ 236,200 |  |
Adjustment |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption | $ 5,781 | $ (30,233) |  |  |
Minimum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lessee, operating lease, term |  |  | 5 years |  |
Lessee, operating lease, renewal term |  |  | 5 years |  |
Lease operating lease, term |  |  | 10 years |  |
Minimum | Vehicle And Equipment |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lessee, operating lease, term |  |  | 1 year |  |
Maximum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lessee, operating lease, term |  |  | 10 years |  |
Lessee, operating lease, renewal term |  |  | 1 year |  |
Lease operating lease, term |  |  | 25 years |  |
Maximum | Vehicle And Equipment |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lessee, operating lease, term |  |  | 7 years |  |
ASU 2016-02 | Adjustment |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  |  | $ 5,800

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