2.4.0.847120 - Disclosure - COMMITMENTS AND CONTINGENCIES - DOLLAR THRIFTY (Details)truefalseIn Millions, unless otherwise specifiedfalse1false USDtruefalse$D2012Q3YTD_DollarThriftyAutomotiveGroupIncMemberhttp://www.sec.gov/CIK0000047129duration2012-01-01T00:00:002012-09-30T00:00:00falsefalseDollar Thrifty Automotive Group Incdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldihzc_DollarThriftyAutomotiveGroupIncMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDtruefalse$D2011Q3YTD_DollarThriftyAutomotiveGroupIncMemberhttp://www.sec.gov/CIK0000047129duration2011-01-01T00:00:002011-09-30T00:00:00falsefalseDollar Thrifty Automotive Group Incdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldihzc_DollarThriftyAutomotiveGroupIncMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDtruefalse$D2011_DollarThriftyAutomotiveGroupIncMemberhttp://www.sec.gov/CIK0000047129duration2011-01-01T00:00:002011-12-31T00:00:00falsefalseDollar Thrifty Automotive Group Incdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldihzc_DollarThriftyAutomotiveGroupIncMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDtruefalse$D2010_DollarThriftyAutomotiveGroupIncMemberhttp://www.sec.gov/CIK0000047129duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseDollar Thrifty Automotive Group Incdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldihzc_DollarThriftyAutomotiveGroupIncMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5false truefalseD2012Q2_M06_DollarThriftyAutomotiveGroupIncMember_VehicleSupplyAgreementMemberhttp://www.sec.gov/CIK0000047129duration2012-06-01T00:00:002012-06-30T00:00:00falsefalseDollar Thrifty Automotive Group Incdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldihzc_DollarThriftyAutomotiveGroupIncMemberdei_LegalEntityAxisexplicitMemberfalsefalseVehicle supply agreementus-gaap_InstrumentAxisxbrldihttp://xbrl.org/2006/xbrldihzc_VehicleSupplyAgreementMemberus-gaap_InstrumentAxisexplicitMember1true 3hzc_CommitmentsAndContingenciesDisclosureLineItemshzc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Commitments and contingencies2false 4hzc_IncreaseDecreaseInInsuranceReserveshzc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse25000002.5USD$falsetruefalse2truefalsefalse1060000010.6USD$falsetruefalse3truefalsefalse3220000032.2USD$falsetruefalse4truefalsefalse1340000013.4USD$falsetruefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the increase (decrease) in the aggregate amount of policy reserves.No definition available.false2Favorable insurance reserve adjustments3false 4hzc_LongTermPurchaseCommitmentAgreementTermhzc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse003 yearsfalsefalsefalsexbrli:durationItemTypenaRepresents the term of agreement covered by the long-term purchase arrangement.No definition available.false0Agreement termfalseCOMMITMENTS AND CONTINGENCIES - DOLLAR THRIFTY (Details) (Dollar Thrifty Automotive Group Inc, USD $)HundredThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.hertz.com/role/DisclosureCommitmentsAndContingenciesDollarThriftyDetailsQuarterEnd53