PROPERTY AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2018

Property and Equipment [Line Items]

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, 2018			DECEMBER 31, 2017
Property and equipment, at cost:
Land	N/A	$	87		$	88
Buildings and improvements	15-40	942			867
Machinery and equipment	5-25	3,240			3,037
Roads	10-35	785			782
Other	3-10	179			182
Total cost		5,233			4,956
Accumulated depreciation and amortization		(3,376		)	(3,338		)
Property and equipment, net		$	1,857		$	1,618