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OTHER RECEIVABLES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other Receivables	$ 16,703us-gaap_OtherReceivables	$ 16,180us-gaap_OtherReceivables
Allowance for doubtful accounts	9,980us-gaap_AllowanceForDoubtfulAccountsReceivable	9,912us-gaap_AllowanceForDoubtfulAccountsReceivable	9,857us-gaap_AllowanceForDoubtfulAccountsReceivable	4,487us-gaap_AllowanceForDoubtfulAccountsReceivable
Agent receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other Receivables	4,440us-gaap_OtherReceivables / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = fro_AgentReceivablesMember	5,065us-gaap_OtherReceivables / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = fro_AgentReceivablesMember
Claims receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other Receivables	7,553us-gaap_OtherReceivables / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = fro_ClaimsReceivablesMember	4,938us-gaap_OtherReceivables / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = fro_ClaimsReceivablesMember
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other Receivables	4,710us-gaap_OtherReceivables / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = fro_OtherReceivablesMember	6,177us-gaap_OtherReceivables / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = fro_OtherReceivablesMember
Total Other Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts	$ 0us-gaap_AllowanceForDoubtfulAccountsReceivable / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = fro_TotalOtherReceivablesMember	$ 0us-gaap_AllowanceForDoubtfulAccountsReceivable / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = fro_TotalOtherReceivablesMember

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- Definition

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+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Carrying amounts due as of the balance sheet date from parties or arising from transactions not otherwise specified in the taxonomy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 8

-Article 5

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