FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2015

Estimated fair values and carrying values of our long-term debt

The estimated fair values and carrying values of our long-term debt consisted of the following:

DOLLAR AMOUNTS IN MILLIONS
	DECEMBER 31, 2015				DECEMBER 31, 2014
	CARRYING VALUE		FAIR VALUE  (LEVEL 2)		CARRYING VALUE		FAIR VALUE (LEVEL 2)
Long-term debt (including current maturities)	$	4,891	$	5,620	$	4,891	$	5,922