PROPERTY AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2019

Property Plant And Equipment [Abstract]

Carrying Value of Property and Equipment and Estimated Service Lives

Carrying Value of Property and Equipment and Estimated Service Lives

DOLLAR AMOUNTS IN MILLIONS
	RANGE OF LIVES	DECEMBER 31, 2019			DECEMBER 31, 2018
Property and equipment, at cost:
Land	N/A	$	87		$	87
Buildings and improvements	15-40		999			942
Machinery and equipment	5-25		3,425			3,240
Roads	10-35		742			785
Other	3-10		193			179
Total cost			5,446			5,233
Accumulated depreciation and amortization			(3,477	)		(3,376	)
Property and equipment, net		$	1,969		$	1,857