Adjustment to Additional Paid in Capital, Debt Conversion with Inducement Offer

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- Definition

At-the-market (ATM) offering through Morgan Stanley, maximum aggregate sales proceeds

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- Definition

Aggregate par or stated value of authorized nonredeemable common stock (or common stock redeemable solely at the option of the issuer).

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- Definition

Common Stock Value Per Share Canceled

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- Definition

Debt Conversion, Cash Payment

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- Definition

Face amount or stated value per share of common stock.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.29)

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-Name Regulation S-X (SX)

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-Section 02

-Paragraph 30

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Name Accounting Standards Codification

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-Section 50

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-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

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- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

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The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

The cash inflow from the additional capital contribution to the entity.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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- Definition

Number of new stock issued during the period.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Name Regulation S-X (SX)

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-Section 02

-Paragraph 29, 30

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SHARE CAPITAL (Details) (USD $)	12 Months Ended			1 Months Ended
SHARE CAPITAL (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Oct. 31, 2014	Oct. 31, 2013	Sep. 19, 2014	May 14, 2013	Jun. 30, 2013
Authorized share capital [Abstract]
Ordinary shares authorized (in shares)	1,000,000,000us-gaap_CommonStockSharesAuthorized	312,500,000us-gaap_CommonStockSharesAuthorized		1,000,000,000us-gaap_CommonStockSharesAuthorized			312,500,000us-gaap_CommonStockSharesAuthorized
Ordinary shares authorized - par value (in dollars per share)	$ 1	$ 1		$ 1
Ordinary shares authorized	$ 1,000,000,000fro_CommonStockValueAuthorized	$ 312,500,000fro_CommonStockValueAuthorized		$ 1,000,000,000fro_CommonStockValueAuthorized			$ 312,500,000fro_CommonStockValueAuthorized
Issued and fully paid share capital [Abstract]
Ordinary shares issued (in shares)	112,342,989us-gaap_CommonStockSharesOutstanding	86,511,713us-gaap_CommonStockSharesOutstanding		112,342,989us-gaap_CommonStockSharesOutstanding
Ordinary shares issued (dollars per share)	$ 1	$ 1		$ 1
Common Stock, Value, Issued	112,343,000us-gaap_CommonStockValue	86,512,000us-gaap_CommonStockValue		112,343,000us-gaap_CommonStockValue
Additional Paid in Capital [Abstract]
ATM Offering Maximum Aggregate Sales Proceeds	100,000,000			100,000,000
Net proceeds from issuance of shares	52,934,000	4,802,000	0
Debt Conversion, Cash Payment	10,000,000fro_DebtConversionCashPayment
Special General Meeting [Member]
Authorized share capital [Abstract]
Ordinary shares authorized (in shares)								312,500,000
Ordinary shares authorized - par value (in dollars per share)	$ 2.50			$ 2.50			$ 1.00	$ 1.00
Ordinary shares authorized								312,500,000
Issued and fully paid share capital [Abstract]
Ordinary shares issued (in shares)								77,858,502
Ordinary shares issued (dollars per share)	$ 2.50			$ 2.50			$ 1.00	$ 1.00
Common Stock, Value, Issued		194,646,255						77,858,502
Common Stock Value Per Share Canceled								$ 1.50
At-The-Market Offering [Member]
Additional Paid in Capital [Abstract]
ATM Offering Maximum Aggregate Sales Proceeds	40,000,000			40,000,000					40,000,000
Shares issued	12,834,800	2,178,384
Net proceeds from issuance of shares	54,200,000	6,200,000
Debt Conversion [Member]
Additional Paid in Capital [Abstract]
Debt Conversion, Original Debt, Amount				22,500,000	23,000,000	25,000,000
Debt Conversion, Converted Instrument, Shares Issued				4,744,752	8,251,724	6,474,827
Debt Conversion, Cash Payment	9,600,000					2,250,000
Adjustment to Additional Paid in Capital, Debt Conversion with Inducement Offer				28,600,000	25,400,000	28,900,000
Annual General Meeting [Member]
Authorized share capital [Abstract]
Ordinary shares authorized (in shares)							1,000,000,000
Ordinary shares authorized							$ 1,000,000,000