ASSETS HELD FOR SALE (Narrative) (Details)	12 Months Ended
Dec. 31, 2019 USD ($) dealership_location franchise collision_center CollisionRepairCenters property	Dec. 31, 2018 USD ($) property	Dec. 31, 2017 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Number of franchises (in franchises) \| franchise	107
Number of collision repair centers (in collision repair centers) \| CollisionRepairCenters	25
Assets held for sale	$ 53,300,000	$ 26,300,000
Property, plant and equipment, net	909,700,000	886,100,000
Liabilities associated with assets held for sale	100,900,000	0
Impairment of real estate	0	0	$ 0
Real Estate Not Currently Used in Operations
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	38,900,000
Liabilities associated with assets held for sale	$ 8,300,000	$ 0
Pending Disposition
Long Lived Assets Held-for-sale [Line Items]
Number of real estate properties \| franchise	7
Number of franchises (in franchises) \| dealership_location	6
Number of collision repair centers (in collision repair centers) \| collision_center	1
Assets held for sale	$ 115,300,000
Liabilities associated with assets held for sale	$ 92,600,000
Disposed of by Sale \| Vacant Property
Long Lived Assets Held-for-sale [Line Items]
Number of real estate properties \| property	2	2
Real estate held-for-sale	$ 14,600,000	$ 4,000,000.0
Held-for-sale
Long Lived Assets Held-for-sale [Line Items]
Impairment of real estate	$ 0	$ 0

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Amount of assets held-for-sale that are not part of a disposal group.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

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