v3.19.2
Leases (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Leases [Abstract]          
Operating Leases, Rent Expense, Net   $ 9,500   $ 18,500  
2022 $ 23,544   $ 23,544    
Operating Lease, Variable Lease Income 14,200   27,900    
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Gross 8,024,845   8,024,845   $ 7,628,592
Other Energy Equipment [Member] | Property Subject to Operating Lease [Member]          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Gross 226,500   226,500    
Containers [Member] | Property Subject to Operating Lease [Member]          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Gross 73,600   73,600    
Pipelines [Member] | Property Subject to Operating Lease [Member]          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Gross 53,500   53,500    
Property, Plant and Equipment, Other Types [Member] | Property Subject to Operating Lease [Member]          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Gross $ 26,700   $ 26,700