Description of Business and Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 mi Petroleum_Refineries	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Number of refineries located in Tulsa, Oklahoma	2
Refinery distance from main city (miles)	65
Allowance for doubtful accounts	$ 2.5	$ 3.5
Asset retirement obligation	18.1	14.4
Third Party Transportation Agreement [Member]
Property, Plant and Equipment [Line Items]
Minimum annual cash inflows from third-party transportation agreement	24.4
Third-party transportation agreement, amortization expense	2.0
Third-party transportation agreement, net of accumulated amortization	44.5	46.5
Finite-Lived Intangible Assets, Accumulated Amortization	15.7	13.7
Sabine Biofuels [Member]
Property, Plant and Equipment [Line Items]
Percentage of interest owned in development stage biodiesel production facility	50.00%
Twelve Inch Refined Products Pipeline Project [Member]
Property, Plant and Equipment [Line Items]
Percentage of interest owned In pipeline project	75.00%
Size of pipeline (inches)	12
HEP | SLC Pipeline
Property, Plant and Equipment [Line Items]
Percentage of interest owned In pipeline project	25.00%
Length of pipeline	95
Cost of equity method investment	25.0
HEP | SLC Pipeline | Difference Between Contributed Capital And Allocated Equity [Member]
Property, Plant and Equipment [Line Items]
Cost of equity method investment	35.0
HEP | SLC Pipeline | Investment Balance [Member]
Property, Plant and Equipment [Line Items]
Cost of equity method investment	$ 60.0
Transportation vehicles
Property, Plant and Equipment [Line Items]
Estimated useful life of assets, minimum	5 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Frequency of maintenance, in period	2 years
Minimum [Member] | Refining Pipeline And Terminal Facilities [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of assets, minimum	20 years
Minimum [Member] | Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of assets, minimum	10 years
Minimum [Member] | Other fixed assets
Property, Plant and Equipment [Line Items]
Estimated useful life of assets, minimum	5 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Frequency of maintenance, in period	5 years
Maximum [Member] | Refining Pipeline And Terminal Facilities [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of assets, minimum	25 years
Maximum [Member] | Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of assets, minimum	40 years
Maximum [Member] | Other fixed assets
Property, Plant and Equipment [Line Items]
Estimated useful life of assets, minimum	30 years
UNEV [Member] | HEP
Property, Plant and Equipment [Line Items]
Percentage of ownership in variable interest entity	44.00%
Percentage of general partner interest	2.00%