Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Carrying Amounts Of Long-Term Debt

The carrying amounts of long-term debt are as follows:

	March 31, 2018			December 31, 2017
	(In thousands)
HollyFrontier 5.875% Senior Notes
Principal	$	1,000,000		$	1,000,000
Unamortized discount and debt issuance costs	(8,078		)	(8,315		)
	991,922			991,685
HEP Credit Agreement	895,500			1,012,000
HEP 6% Senior Notes
Principal	500,000			500,000
Unamortized discount and debt issuance costs	(4,548		)	(4,692		)
	495,452			495,308
Total HEP long-term debt	1,390,952			1,507,308
Total long-term debt	$	2,382,874		$	2,498,993

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The fair values of the senior notes are as follows:

	March 31, 2018		December 31, 2017
	(In thousands)
HollyFrontier senior notes	$	1,076,300	$	1,113,470
HEP senior notes	$	511,740	$	525,120