Number of vessels leased to third parties on time charter which are classified as an investment in finance lease.

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Number of vessels the company owns

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Number Of Vessels Disposed Of

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Number of vessels owned through ITCL.

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Number of vessels whose lease was terminated

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Other movements in gross vessels and equipment accounts

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Property, Plant and Equipment, Deconsolidation of Subsidiaries

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Property, Plant and Equipment, Deconsolidation of Subsidiaries Accumulated Depreciation

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- Definition

Tangible asset impairment charges, accumulated depreciation charge portion

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Current year reclassification from construction in progress to long-lived, physical assets used in the normal conduct of business and not intended for resale.

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Carrying amount at the balance sheet date of vessels and other long-lived depreciable physical assets used in the normal conduct of business and not intended for resale, net of accumulated depreciation on vessels and equipments.

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No definition available.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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

-Publisher FASB

-Name Accounting Standards Codification

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The decrease in accumulated depreciation, depletion and amortization (relating to property, plant and equipment) as a result of sales or disposals of property, plant and equipment during the period.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

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The other noncash expense, not otherwise specified in the taxonomy, charged against earnings in the period to allocate the cost of tangible and intangible assets over their remaining economic lives.

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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VESSELS AND EQUIPMENT (Details) (USD $)	0 Months Ended	3 Months Ended		12 Months Ended			1 Months Ended	3 Months Ended
VESSELS AND EQUIPMENT (Details) (USD $)	Jul. 15, 2014 vessel	Mar. 31, 2014	Mar. 31, 2013 capital_lease	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 31, 2014 vessel	Mar. 31, 2012	Sep. 30, 2014	Sep. 30, 2011
Vessels and equipment [Roll Forward]
Net Carrying Value Beginning balance		$ 264,804,000fro_VesselsAndEquipmentNet		$ 264,804,000fro_VesselsAndEquipmentNet
Transfers to Vessels and Equipment				56,740,000fro_TransfersToVesselsAndEquipment
Depreciation				(81,471,000)us-gaap_Depreciation	(99,823,000)us-gaap_Depreciation	(114,845,000)us-gaap_Depreciation
Impairment of vessels					(103,700,000)us-gaap_TangibleAssetImpairmentCharges	(32,000,000)us-gaap_TangibleAssetImpairmentCharges
Net Carrying Value ending balance				56,624,000fro_VesselsAndEquipmentNet	264,804,000fro_VesselsAndEquipmentNet
Gain (Loss) on Sale of Assets and Asset Impairment Charges		15,700,000
Number of vessels owned through ITCL	4fro_NumberOfVesselsOwnedThroughItcl
Number Of Vessels Disposed Of			1fro_NumberOfVesselsDisposedOf
Altair Voyager, Cygnus Voyager and Sirius Voyager [Member]
Vessels and equipment [Roll Forward]
Number of vessels whose lease was terminated							3
Front Alfa [Member]
Vessels and equipment [Roll Forward]
Gain (Loss) on Sale of Assets and Asset Impairment Charges								2,100,000
Vessels and Equipment [Member]
Vessels and equipment [Roll Forward]
Balance, beginning of period		408,368,000	408,525,000	408,368,000	408,525,000	459,312,000		459,312,000
Accumulated Depreciation beginning balance		(143,564,000)	(125,579,000)	(143,564,000)	(125,579,000)	(147,020,000)		(147,020,000)
Net Carrying Value Beginning balance		264,804,000	282,946,000	264,804,000	282,946,000	312,292,000		312,292,000
Purchase of vessels and equipment				542,000	374,000	730,000
Transfers to Vessels and Equipment				56,740,000
Effect of de-consolidation of subsidiaries				(224,602,000)
Effect of de-consolidation of subsidiaries, accumulated depreciation				49,803,000
Other movements cost				(936,000)	(531,000)	443,000
Other movements depreciation				(854,000)	(449,000)	(341,000)
Depreciation				(11,082,000)	(18,434,000)	(18,508,000)
Disposals cost				(117,297,000)		(51,960,000)
Disposals depreciation				50,223,000		40,290,000
Impairment of vessels				(62,153,000)
Tangible asset impairment charges, accumulated depreciation charge portion				49,728,000
Balance, end of period				60,662,000	408,368,000	408,525,000
Accumulated Depreciation ending balance				(4,038,000)	(143,564,000)	(125,579,000)
Net Carrying Value ending balance				56,624,000	264,804,000	282,946,000
Vessel [Member]
Vessels and equipment [Roll Forward]
Number of vessels the company owns (in vessels)				1	9
Number of Vessels classified as an investment in finance lease.					3
Vessel [Member] \| VLCC Ulriken [Member]
Vessels and equipment [Roll Forward]
Impairment of vessels									(12,400,000)
Vessel [Member] \| Altair Voyager, Cygnus Voyager and Sirius Voyager [Member]
Vessels and equipment [Roll Forward]
Number of vessels whose lease was terminated							3
Number Of Vessels Disposed Of							3
Vessel [Member] \| Front Alfa [Member]
Vessels and equipment [Roll Forward]
Gain (Loss) on Sale of Assets and Asset Impairment Charges										$ 24,800,000