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- Definition

Compensation Payable (Receivable) For Early Contract Termination Of Charter

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Compensation Received On Termination Of Charters At Fair Value, Notes Receivable

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Gain (Loss) On Settlement Of Related Party Loan Notes

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- Definition

Increase In Charter Hire Per Day

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Notes Compensation Received on Termination of Charters, Face Value

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Number Of Capesize Drybulk Carriers Financed

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Number Of Capesize Drybulk Carriers Owned

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- Definition

Number Of Drilling Units

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Number Of Subsidiaries, Added To Consolidation

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- Definition

Number Of Very Large Crude Carriers Sold

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Number Of Vessels Sold

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- Definition

Proceeds from sale of vessels and termination of charters.

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Proceeds From Settled Loan Notes

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- Definition

Related Party Transaction, Forbearance And Fund Withdrawal Threshold, Payment Receivable Percentage

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- Definition

Subsidiary Or Equity Method Investee, Percentage Ownership Sold

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- Definition

Upgrade Cost Per Vessel

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- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

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- Definition

Dividends received on equity and other investments during the current period.

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- Definition

The cash inflow associated with the sale of securities classified as trading securities and held for investment purposes. Excludes proceeds from trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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RELATED PARTY TRANSACTIONS (Narrative) (Details)	1 Months Ended			2 Months Ended	6 Months Ended		12 Months Ended
RELATED PARTY TRANSACTIONS (Narrative) (Details)	Mar. 31, 2021 USD ($) vessel	Feb. 28, 2021 numberOfDrillingUnits	Feb. 29, 2020 USD ($) vessel	Dec. 31, 2020 USD ($)	Jun. 30, 2021 USD ($) drillingRig vessel	Jun. 30, 2020 USD ($) vessel	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) carrier numberOfDrillingUnits	Aug. 26, 2021 USD ($)	Oct. 31, 2020 subsidiary
Related Party Transaction [Line Items]
Number of drilling units \| drillingRig					2
Number of subsidiaries, consolidated \| subsidiary										2
Gain on settlement of loan note - related party loan notes					$ 0	$ 4,446,000
Gain recorded in relation to sale of vessels						2,300,000
Number of vessels sold \| vessel					0
Financial Guarantee
Related Party Transaction [Line Items]
Amount guaranteed by Ship Finance				$ 83,100,000	$ 83,100,000		$ 83,100,000
Financial Guarantee \| Subsequent Event
Related Party Transaction [Line Items]
Amount guaranteed by Ship Finance									$ 83,000,000
ADS Maritime Holding \| Equity Securities
Related Party Transaction [Line Items]
Proceeds from sale of equity securities	$ 800,000
Front Page, Front Stratus, Front Serenade, Front Ariake
Related Party Transaction [Line Items]
Number of very large crude carriers sold \| vessel			4
Proceeds from settled loan notes			$ 11,000,000
Compensation received on termination of charters at fair value, notes receivable			11,000,000
Gain on settlement of loan note - related party loan notes						0
Front Circassia
Related Party Transaction [Line Items]
Compensation received on termination of charters at fair value, notes receivable			4,450,000
Gain on settlement of loan note - related party loan notes						$ 4,450,000
Initial face value			8,900,000
Front Hakata
Related Party Transaction [Line Items]
Proceeds from sale of vessels and termination of charters			33,500,000
Compensation payable for early contract termination of charter			(3,200,000)
Gain recorded in relation to sale of vessels			$ 1,400,000
Number of vessels sold \| vessel						1
West Linus and West Hercules
Related Party Transaction [Line Items]
Number of drilling units \| numberOfDrillingUnits		2
Golden Ocean
Related Party Transaction [Line Items]
Number of capesize drybulk carriers financed \| carrier								7
Number of capesize drybulk carriers owned \| carrier								8
Upgrade cost per vessel								$ 2,500,000
Increase in charter hire per day								$ 1,535,000
ADS Maritime Holding
Related Party Transaction [Line Items]
Proceeds from dividends received	$ 8,800,000
Number of vessels sold \| vessel	2
Seadrill \| Financial Guarantee \| Subsequent Event
Related Party Transaction [Line Items]
Accounts Payable									3,000,000
SFL Hercules Ltd (“SFL Hercules”)
Related Party Transaction [Line Items]
Proceeds from dividends received					$ 0
SFL Hercules Ltd (“SFL Hercules”) \| Financial Guarantee \| Subsequent Event
Related Party Transaction [Line Items]
Cash contribution									$ 5,000,000
SFL Deepwater, SFL Hercules And SFL Linus
Related Party Transaction [Line Items]
Number of drilling units \| numberOfDrillingUnits								3
Proceeds from dividends received						$ 0	$ 0
Minimum \| West Linus and West Hercules
Related Party Transaction [Line Items]
Expected revenue to be collected under existing charter agreements (as percentage)		65.00%		65.00%
Maximum \| West Linus and West Hercules
Related Party Transaction [Line Items]
Expected revenue to be collected under existing charter agreements (as percentage)		75.00%		75.00%
River Box
Related Party Transaction [Line Items]
Equity method investment, ownership (in percentage)				49.90%			49.90%
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| River Box
Related Party Transaction [Line Items]
Subsidiary, percentage ownership sold (in percentage)				50.10%			50.10%