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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) renewal_option segment
Disaggregation of Revenue [Line Items] |  |
Number of segments | segment |  | 3
Special recognition and retention bonus for front-line employees | $ | $ 28,000,000 |
Maintenance term contract |  | 1 year
Cancellable contract term |  | 1 year
Maximum amount of insurance risk of loss retained per occurrence | $ |  | $ 3,000,000
Trailers and other |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessor | 10 years | 10 years
Facilities |  |
Disaggregation of Revenue [Line Items] |  |
Lease renewal term | 5 years | 5 years
Revenue Earning Equipment, Material Handling Equipment, Automated Washing Machines and Vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Number of renewal options | renewal_option |  | 0
Minimum | ChoiceLease Service Contracts |  |
Disaggregation of Revenue [Line Items] |  |
Contract term | 3 years | 3 years
Minimum | SCS And DTS Service Contracts |  |
Disaggregation of Revenue [Line Items] |  |
Contract term | 3 years | 3 years
Minimum | Trucks and Tractors |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessor | 3 years | 3 years
Minimum | Revenue Earning Equipment |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessor | 1 day | 1 day
Minimum | Facilities |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessee | 3 years | 3 years
Number of renewal options | renewal_option |  | 1
Minimum | Revenue Earning Equipment, Material Handling Equipment, Automated Washing Machines and Vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessee | 3 years | 3 years
Maximum | ChoiceLease Service Contracts |  |
Disaggregation of Revenue [Line Items] |  |
Contract term | 7 years | 7 years
Maximum | SCS And DTS Service Contracts |  |
Disaggregation of Revenue [Line Items] |  |
Contract term | 5 years | 5 years
Maximum | Trucks and Tractors |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessor | 7 years | 7 years
Maximum | Revenue Earning Equipment |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessor | 1 year | 1 year
Maximum | Facilities |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessee | 5 years | 5 years
Maximum | Revenue Earning Equipment, Material Handling Equipment, Automated Washing Machines and Vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Term of operating lease as lessee | 7 years | 7 years

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