Financial Statement Information Schedule of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Product Information
Inventories (3)	$ 394,259	$ 150,342
Inventories	2,836,075	2,380,783	$ 1,935,237
Aftermarket and refurbished products
Product Information
Inventories	2,309,458	1,877,653
Salvage and remanufactured products
Product Information
Inventories	503,199	487,108
ManufacturedProducts [Member]
Accounting Policies [Abstract]
Inventory, Raw Materials, Gross	17,000	10,000
Inventory, Work in Process, Gross	2,000	2,000
Inventory, Finished Goods, Gross	4,000	4,000
Product Information
Inventories	$ 23,418	$ 16,022