2.2.0.7 false Entity Information (USD $) 995400 - Document - Entity Information true false In Millions, except Share data false false 1 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 false false u001 Standard http://www.xbrl.org/2003/instance shares xbrli 0 false 3 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ 3 Entity Registrant Name 1 dei_EntityRegistrantName dei false na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 Frontier Oil Corp /New/ Frontier Oil Corp /New/ false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false xbrli:normalizedStringItemType normalizedstring The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. 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No authoritative reference available. false 9 Entity Filer Category 1 dei_EntityFilerCategory dei false na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 Large Accelerated Filer Large Accelerated Filer false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false us-types:filerCategoryItemType na Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, or (4) Smaller Reporting Company. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure. 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