XML 68 R96.htm IDEA: XBRL DOCUMENT
v2.4.1.9

DISPOSAL OF ASSETS (Details) (USD $) | 0 Months Ended | 12 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended |  |  |  |  |  |
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Jul. 15, 2014 vessel | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2014 | Oct. 31, 2014 | Sep. 30, 2011 | Jun. 30, 2012 | Dec. 31, 2012 | Feb. 28, 2013 | Nov. 30, 2013 | Mar. 31, 2012 | Mar. 31, 2013 | Mar. 31, 2014 | Dec. 31, 2011 | Sep. 30, 2012 | Oct. 02, 2014
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  |  |  | $ 32,600,000 fro_RelatedPartyLeaseTerminationPaymentsPaid |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels owned through ITCL | 4 fro_NumberOfVesselsOwnedThroughItcl |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  | 103,700,000 us-gaap_TangibleAssetImpairmentCharges | 32,000,000 us-gaap_TangibleAssetImpairmentCharges |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain on lease terminations |  | 40,382,000 us-gaap_GainLossOnContractTermination | 21,237,000 us-gaap_GainLossOnContractTermination | 21,806,000 us-gaap_GainLossOnContractTermination |  |  |  |  |  |  |  |  |  |  |  |  |
VLCC Ulriken [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  |  |  | 12,400,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_VLCCUlrikenMember |  |  |  |  |  |  |  |  |  |  |  |
Altair Voyager, Cygnus Voyager and Sirius Voyager [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain on lease terminations |  |  |  |  |  | 1,300,000 us-gaap_GainLossOnContractTermination / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_AltairVoyagerCygnusVoyagerandSiriusVoyagerMember |  |  |  |  |  |  |  |  |  |  |
Vessels and Equipment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  | 62,153,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels and Equipment [Member] | Front Alfa [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  | (2,100,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontAlfaMember |  |  |  |  |
Impairment of vessels |  |  |  |  |  |  | 24,800,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontAlfaMember |  |  |  |  |  |  |  |  |  |
Vessels and Equipment [Member] | Front Rider [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  |  |  |  |  |  | 4,900,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontRiderMember |  |  |  |  |  |  |  |  |
Vessels and Equipment [Member] | Front Climber [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  |  |  |  |  |  | 4,200,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontClimberMember |  |  |  |  |  |  |  |  |
Vessels and Equipment [Member] | Front Driver [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  |  |  |  |  |  | 4,000,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontDriverMember |  |  |  |  |  |  |  |  |
Vessels and Equipment [Member] | Front Guider [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  |  |  |  |  |  |  | 14,200,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontGuiderMember |  |  |  |  |  |  |  |
Vessels and Equipment [Member] | Edinburgh (Ex Titan Aries) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  |  | 7,600,000 us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_EdinburghExTitanAriesMember |  |  |  |
Vessels and Equipment [Member] | Front Pride [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  |  | 4,700,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontPrideMember |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels and Equipment [Member] | Front Champion / Golden Victory [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  | 88,100,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontChampionGoldenVictoryMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels and Equipment [Member] | VLCC Ulysses (ex Phoenix Voyager) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,700,000 us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_VLCCUlyssesexPhoenixVoyagerMember |  |  |
Vessels and Equipment [Member] | VLCC Ulriken [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  |  |  |  | 12,400,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_VLCCUlrikenMember |  |  |  |  |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Striver [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  |  |  | 8,100,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontStriverMember |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  |  |  |  |  | (400,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontStriverMember |  |  |  |  |  |  | (9,200,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontStriverMember |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Titan Orion (ex-Front Duke) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  | 10,600,000 us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_TitanOrionExFrontDukeMember |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Rider [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (100,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontRiderMember |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Climber [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  | (200,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontClimberMember |  |  |  |  | (200,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontClimberMember |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Driver [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  | (800,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontDriverMember |  |  |  |  | (800,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontDriverMember |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Ticen Ocean (renamed Front Lady) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  |  | 11,200,000 us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_TicenOceanRenamedFrontLadyMember |  |  |  |  | 11,200,000 us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_TicenOceanRenamedFrontLadyMember |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Viewer & Front Guider [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  |  |  |  |  |  |  |  | 23,500,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontViewerFrontGuiderMember |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Viewer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  |  |  |  |  |  |  |  | 12,700,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontViewerMember |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  | (16,500,000)us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontViewerMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Guider [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  |  |  |  |  |  |  |  | 10,800,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontGuiderMember |  |  |  |  |  |  |  |
Capital lease modification adjustment to carrying value of asset |  |  |  |  |  |  |  |  | 9,100,000 fro_CapitalLeaseModificationAdjustmentToCarryingValueOfAsset / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontGuiderMember |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Pride [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  |  |  |  |  |  |  |  |  | 2,100,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontPrideMember |  |  |  |  |  |  |
Net gain (loss) on sale |  |  | 200,000 us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontPrideMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Champion / Golden Victory [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  |  | 13,800,000 us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontChampionGoldenVictoryMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Opalia, Front Commerce and Front Comanche [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on sale |  | 40,400,000 us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontOpaliaFrontCommerceandFrontComancheMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of vessels |  | 85,300,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontOpaliaFrontCommerceandFrontComancheMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Upfront Payment / Note Payable [Member] | Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Champion / Golden Victory [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  |  |  |  |  |  |  |  |  |  | 89,900,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / fro_MethodofPaymentAxis = fro_UpfrontPaymentNotePayableMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontChampionGoldenVictoryMember |  |  |  |  |  |
Upfront Payment / Note Payable [Member] | Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Opalia, Front Commerce and Front Comanche [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  | 58,800,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / fro_MethodofPaymentAxis = fro_UpfrontPaymentNotePayableMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontOpaliaFrontCommerceandFrontComancheMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Upfront Payment [Member] | Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Champion / Golden Victory [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  |  |  |  |  |  |  |  |  |  | 10,900,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / fro_MethodofPaymentAxis = fro_UpfrontPaymentMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontChampionGoldenVictoryMember |  |  |  |  |  |
Upfront Payment [Member] | Ship Finance International Limited [Member] | Vessels and Equipment [Member] | Front Opalia, Front Commerce and Front Comanche [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party, Lease termination payments paid |  | 10,500,000 fro_RelatedPartyLeaseTerminationPaymentsPaid / fro_MethodofPaymentAxis = fro_UpfrontPaymentMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = fro_ShipFinanceInternationalLimitedMember / us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis = fro_FrontOpaliaFrontCommerceandFrontComancheMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entities CalPetro Bahamas B1, CalPetro Bahamas BII, CalPetro IOM [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from contract termination held in restricted cash |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000 us-gaap_RestrictedCashAndCashEquivalents / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = fro_VariableInterestEntitiesCalpetroBahamasB1CalpetroBahamasBiiCalpetroIomMember
Altair Voyager, Cygnus Voyager and Sirius Voyager [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels sold from early termination Agreement |  |  |  |  |  | 3 fro_NumberofVesselsSoldfromEarlyTerminationAgreement / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = fro_AltairVoyagerCygnusVoyagerandSiriusVoyagerMember |  |  |  |  |  |  |  |  |  |  |
Proceeds from contract termination held in restricted cash |  |  |  |  |  | 700,000 us-gaap_RestrictedCashAndCashEquivalents / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = fro_AltairVoyagerCygnusVoyagerandSiriusVoyagerMember |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity, Primary Beneficiary | Variable Interest Entities CalPetro Bahamas B1, CalPetro Bahamas BII, CalPetro IOM [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from contract termination held in restricted cash |  |  |  |  |  | $ 700,000 us-gaap_RestrictedCashAndCashEquivalents / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = fro_VariableInterestEntitiesCalpetroBahamasB1CalpetroBahamasBiiCalpetroIomMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember |  |  |  |  |  |  |  |  |  |  |
Altair Voyager, Cygnus Voyager and Sirius Voyager [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels whose lease was terminated |  |  |  |  |  | 3 fro_Numberofvesselswhoseleasewasterminated / fro_VesselsByNameAxis = fro_AltairVoyagerCygnusVoyagerandSiriusVoyagerMember |  |  |  |  |  |  |  |  |  |  |

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- Definition Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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- Definition The difference between the value of the consideration received by the Entity on the sale or disposal and net book value of assets sold or disposed, before any tax related impact. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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