Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Carrying Amounts Of Long-Term Debt

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

	December 31,
	2016			2015
	(In thousands)
HollyFrontier 5.875% Senior Notes
Principal	$	1,000,000		$	—
Unamortized discount and debt issuance costs	(8,775		)	—
	991,225			—
Financing Obligation	—			31,288
Total HollyFrontier long-term debt	991,225			31,288
HEP Credit Agreement	553,000			712,000
HEP 6% Senior Notes
Principal	400,000			—
Unamortized discount and debt issuance costs	(6,607		)	—
	393,393			—
HEP 6.5% Senior Notes
Principal	300,000			300,000
Unamortized discount and debt issuance costs	(2,481		)	(3,248		)
	297,519			296,752
Total HEP long-term debt	1,243,912			1,008,752
Total long-term debt	$	2,235,137		$	1,040,040

The fair values of the senior notes are as follows:

	December 31,
	2016		2015
	(In thousands)
HollyFrontier 5.875% Senior Notes	$	1,022,500	$	—
HEP Senior Notes	$	723,750	$	295,500

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 4 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)
2017	$	—
2018	553,000
2019	—
2020	300,000
2021	—
Thereafter	1,400,000
Total	$	2,253,000