Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Carrying Amounts Of Long-Term Debt

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

	December 31,
	2018			2017
	(In thousands)
HollyFrontier 5.875% Senior Notes
Principal	$	1,000,000		$	1,000,000
Unamortized discount and debt issuance costs	(7,360		)	(8,315		)
	992,640			991,685
HEP Credit Agreement	923,000			1,012,000
HEP 6% Senior Notes
Principal	500,000			500,000
Unamortized discount and debt issuance costs	(4,100		)	(4,692		)
	495,900			495,308
Total HEP long-term debt	1,418,900			1,507,308
Total long-term debt	$	2,411,540		$	2,498,993

The fair values of the senior notes are as follows:

	December 31,
	2018		2017
	(In thousands)
HollyFrontier senior notes	$	1,019,160	$	1,113,470
HEP senior notes	$	488,310	$	525,120

These fair values are based on estimates provided by a third party using market quotes for similar type instruments, a Level 2 input. See Note 5 for additional information on Level 2 inputs.

Principal Maturities Of Long-Term Debt

Principal maturities of long-term debt are as follows:

Years Ending December 31,	(In thousands)
2019	$	—
2020	—
2021	—
2022	923,000
2023	—
Thereafter	1,500,000
Total	$	2,423,000