PROPERTY AND EQUIPMENT, NET (Tables)

12 Months Ended

Dec. 31, 2020

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, 2020			DECEMBER 31, 2019
Property and equipment, at cost:
Land	N/A	$	84		$	87
Buildings and improvements	15-40		1,049			999
Machinery and equipment	5-25		3,486			3,425
Roads	10-35		725			742
Other	3-10		101			193
Total cost			5,445			5,446
Accumulated depreciation and amortization			(3,432	)		(3,477	)
Property and equipment, net		$	2,013		$	1,969