Leases (Components of our right-of-use assets) (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Finance Lease [Abstract]
Buildings and Improvements	$ 130,241
Furniture and equipment	21,111
Rental trailers and other rental equipment	115,967
Rental trucks	1,697,339
Right-of-use assets, gross	1,964,658
Less: Accumulated depreciation	(831,048)
Right of use assets, net	1,133,610
Finance Lease [Member]
Finance Lease [Abstract]
Buildings and Improvements	0
Furniture and equipment	21,111
Rental trailers and other rental equipment	115,967
Rental trucks	1,697,339
Right-of-use assets, gross	1,834,417
Less: Accumulated depreciation	(807,489)
Right of use assets, net	1,026,928
Operating Lease [Member]
Finance Lease [Abstract]
Buildings and Improvements	130,241
Furniture and equipment	0
Rental trailers and other rental equipment	0
Rental trucks	0
Right-of-use assets, gross	130,241
Less: Accumulated depreciation	(23,559)
Right of use assets, net	$ 106,682