PROPERTY AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant 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, 2016			DECEMBER 31, 2015
Property and equipment, at cost:
Land	N/A	$	90		$	99
Buildings and improvements	15-35	789			791
Machinery and equipment	5-25	3,022			2,811
Roads	10-25	773			624
Other	3-10	194			195
Total cost		4,868			4,520
Allowance for depreciation and amortization		(3,306		)	(3,287		)
Property and equipment, net		$	1,562		$	1,233