2.2.0.25falsefalse0603 - Disclosure - Vessel Acquisition and Dispositions (Details)truefalseIn Millions, unless otherwise specifiedfalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Jan-01-2011_Mar-31-2011http://www.sec.gov/CIK0001030749duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalsefalse1/1/2010 - 3/31/2010 USD ($) USD ($) / shares $ThreeMonthEnded_31Mar2010http://www.sec.gov/CIK0001030749duration2010-01-01T00:00:002010-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalsefalsefalse4/27/2011 BalanceAsOf_27Apr2011http://www.sec.gov/CIK0001030749instant2011-04-27T00:00:000001-01-01T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli03true0glf_VesselAcquisitionsAndDispositionsTextualsAbstractglffalsenadurationVessel Acquisitions And Dispositions Textuals.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringVessel Acquisitions And Dispositions Textuals.falsefalseVessel Acquisitions and Dispositions (Textuals) [Abstract]4false0glf_NoOfVesselsBeingHeldForSaleButNotIncludedInFleetglffalsenainstantNo of Vessel Being Held for Sale.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse11falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNo of Vessel Being Held for Sale.No authoritative reference available.falsefalseNo of vessel being held for sale but not included in fleet5false0glf_NoOfVesselsUnderConstructionglffalsenainstantNo of Vessel Under Construction.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNo of Vessel Under Construction.No authoritative reference available.falsefalseNo. of vessel under construction6false0us-gaap_InterestCostsCapitalizedus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse00falsetruefalsefalsefalse2truefalsefalse7000000.7falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of interest that was capitalized during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 -Subparagraph b falsefalseCapitalization of interest34Vessel Acquisition and Dispositions (Details) (USD $)HundredThousandsUnKnownUnKnownUnKnowntruetrue