Debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Carrying Amounts Of Long-Term Debt

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

	June 30, 2018			December 31, 2017
	(In thousands)
HollyFrontier 5.875% Senior Notes
Principal	$	1,000,000		$	1,000,000
Unamortized discount and debt issuance costs	(7,840		)	(8,315		)
	992,160			991,685
HEP Credit Agreement	900,000			1,012,000
HEP 6% Senior Notes
Principal	500,000			500,000
Unamortized discount and debt issuance costs	(4,401		)	(4,692		)
	495,599			495,308
Total HEP long-term debt	1,395,599			1,507,308
Total long-term debt	$	2,387,759		$	2,498,993

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The fair values of the senior notes are as follows:

	June 30, 2018		December 31, 2017
	(In thousands)
HollyFrontier senior notes	$	1,074,390	$	1,113,470
HEP senior notes	$	507,025	$	525,120