GOODWILL AND OTHER INTANGIBLES (Finite-lived Intangibles) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 371,998	$ 416,204
Accumulated Amortization	(421,926)	(377,718)
Dealer networks
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	318,571	347,982
Accumulated Amortization	(261,429)	(232,018)
Chrysler relationship
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	38,750	50,000
Accumulated Amortization	(100,000)	(88,750)
Trade name
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	12,600	13,500
Accumulated Amortization	(5,400)	(4,500)
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	2,077	4,722
Accumulated Amortization	$ (55,097)	$ (52,450)