Acquisitions Lovington Artesia (Details) (Lovington-Artesia [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
Jun. 01, 2009	Jun. 02, 2009 mi in
Lovington-Artesia [Member]
Significant Acquisitions and Disposals [Line Items]
Pipeline, Size		16
Payments to Acquire Other Property, Plant, and Equipment		$ 34.2
Crude Oil Pipeline, Length		65
Business Acquisition, Purchase Price Allocation, Noncurrent Assets		95.1
Purchase price in excess of transferred basis in assets acquired from HollyFrontier Corporation	$ 3.1

The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 37

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant