PROPERTY AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Schedule of Estimated Useful Lives

Depreciation is generally computed under the straight-line method over the following estimated useful lives:

Buildings and improvements	10 - 30 years
Operating equipment	5 - 10 years
Office furniture and equipment	5 - 10 years
Leasehold improvements	Lesser of 10 - 30 years or lease term
Automotive equipment	3 - 5 years
Property and equipment under finance leases	Lease term

Schedule of Property and Equipment Stated at Cost Less Accumulated Depreciation

Property and equipment consisted of the following as of December 31, 2021 and 2020 (in millions):

	2021		2020
Land and improvements	$	72	$	74
Real estate held for development and sale	21		25
Buildings and improvements	308		307
Operating equipment	973		939
Office furniture and equipment	129		123
Leasehold improvements	60		59
Automotive equipment	63		66
Finance lease assets	61		59
Construction in progress	34		36
	1,721		1,688
Less: accumulated depreciation	(888)		(865)
	$	833	$	823