Debt (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Carrying Amounts Of Long-Term Debt

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

	September 30, 2017			December 31, 2016
	(In thousands)
HollyFrontier 5.875% Senior Notes
Principal	$	1,000,000		$	1,000,000
Unamortized discount and debt issuance costs	(8,552		)	(8,775		)
	991,448			991,225
HEP Credit Agreement	750,000			553,000
HEP 6% Senior Notes
Principal	500,000			400,000
Unamortized discount and debt issuance costs	(4,934		)	(6,607		)
	495,066			393,393
HEP 6.5% Senior Notes
Principal	—			300,000
Unamortized discount and debt issuance costs	—			(2,481		)
	—			297,519
Total HEP long-term debt	1,245,066			1,243,912
Total long-term debt	$	2,236,514		$	2,235,137

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The fair values of the senior notes are as follows:

	September 30, 2017		December 31, 2016
	(In thousands)
HollyFrontier senior notes	$	1,091,470	$	1,022,500
HEP senior notes	$	524,390	$	723,750