Debt (Narrative) (Details) (USD $)	6 Months Ended	12 Months Ended			1 Months Ended	3 Months Ended	12 Months Ended													1 Months Ended
	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 30, 2009 Plains [Member] Lease [Member]	Mar. 31, 2012 HEP	Dec. 31, 2013 HEP	Dec. 31, 2012 HEP	Dec. 31, 2011 HEP	Dec. 31, 2013 Holly Frontier Credit Agreement [Member]	Dec. 31, 2013 HEP Credit Agreement [Member] HEP	Dec. 31, 2012 HEP Credit Agreement [Member] HEP	Dec. 31, 2013 Letter of Credit [Member]	Dec. 31, 2013 Letter of Credit [Member] HEP	Dec. 31, 2013 9.875% Senior Notes Due 2017	Jun. 30, 2013 9.875% Senior Notes Due 2017	Dec. 31, 2012 9.875% Senior Notes Due 2017	Dec. 31, 2013 6.875% Senior Notes Due 2018	Dec. 31, 2012 6.875% Senior Notes Due 2018	Sep. 30, 2012 8.5% Senior Notes Due 2016	Dec. 31, 2013 8.5% Senior Notes Due 2016	Dec. 31, 2013 8.25% Senior Notes Due 2018 HEP	Dec. 31, 2012 8.25% Senior Notes Due 2018 HEP	Dec. 31, 2013 6.5% Senior Notes Due 2020 HEP	Dec. 31, 2012 6.5% Senior Notes Due 2020 HEP	Mar. 31, 2012 6.5% Senior Notes Due 2020 HEP	Dec. 31, 2013 6.25% Senior Notes Due 2015 HEP	Jun. 30, 2012 6.25% Senior Notes Due 2015 HEP	Mar. 31, 2012 6.25% Senior Notes Due 2015 HEP
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement										$ 1,000,000,000	$ 650,000,000	$ 550,000,000		$ 50,000,000
Borrowings outstanding under revolving credit agreement											363,000,000		5,200,000
Debt Instrument, Interest Rate at Period End		2.163%	2.456%
Stated interest rate, senior notes															9.875%			6.875%		8.50%	8.50%	8.25%		6.50%		6.50%	6.25%	6.25%	6.25%
Senior notes															0	286,800,000	286,812,000	150,000,000	150,000,000	200,000,000		150,000,000	150,000,000	300,000,000	300,000,000	300,000,000
Principal tender on senior notes		300,973,000	205,000,000	8,203,000		157,800,000		205,000,000	8,203,000											208,500,000
Proceeds from sale of storage assets					40,000,000
Term of lease, years					15 years
Net proceeds from issuance of senior notes - HEP						294,800,000	0	294,750,000	0
Repayments of promissory notes						72,900,000
Senior notes, called for redemption																												27,200,000
Debt Instrument, Repurchased Face Amount																301,000,000
Gains (Losses) on Extinguishment of Debt	(22,100,000)	(22,109,000)	0	0
Redemption premium on early extinguishment of debt	14,200,000
Amortization of Debt Discount (Premium)	7,900,000
Senior Notes Redemption Price																						104.125%
Senior Notes Aggregate Redemption Amount																						$ 156,200,000