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Leases - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Property, Plant and Equipment [Line Items]  
Lease revenue $ 44.7
Assets Leased to Others  
Property, Plant and Equipment [Line Items]  
Depreciation expense $ 37.1
Minimum  
Property, Plant and Equipment [Line Items]  
Lessor, term of leases 6 months
Maximum  
Property, Plant and Equipment [Line Items]  
Lessor, term of leases 9 months