FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Abstract]

Estimated Fair Values and Carrying Values of Long-Term Debt and Line of Credit

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

	MARCH 31, 2020				DECEMBER 31, 2019
DOLLAR AMOUNTS IN MILLIONS	CARRYING VALUE		FAIR VALUE (LEVEL 2)		CARRYING VALUE		FAIR VALUE (LEVEL 2)
Long-term debt (including current maturities) and line of credit:
Fixed rate	$	6,651	$	7,233	$	5,922	$	6,986
Variable rate		775		775		455		455
Total debt	$	7,426	$	8,008	$	6,377	$	7,441