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Bareboat Charter Revenues, Per Day, After Emergence Date

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Bareboat Charter Revenues, Per Day, Other Scenarios

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Cash Contribution

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Number Of Drilling Units

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Number Of Subsidiaries, Company Primary Beneficiary

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

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Subsidiary Or Equity Method Investee, Percentage Ownership Sold

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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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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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Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries.

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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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RELATED PARTY TRANSACTIONS (Additional Information) (Details)		1 Months Ended				2 Months Ended	12 Months Ended
	Aug. 26, 2021 subsidiary	Feb. 28, 2022 USD ($)	Sep. 30, 2021 USD ($)	Aug. 31, 2021 USD ($)	Feb. 28, 2021	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) drillingRig	Dec. 31, 2019 USD ($)	Aug. 27, 2021 USD ($)
Related Party Transaction [Line Items]
Gain on sale of subsidiaries, operating							$ 0	$ 1,894,000	$ 0
Number of drilling units \| drillingRig								3
Bareboat charter revenues, per day				$ 64,700
Bareboat charter revenues, per day, after emergence date				60,000
Bareboat charter revenues, per day, other scenarios				$ 40,000
Gain on sale of vessels							39,405,000	$ 2,250,000	$ 0
Subsequent Event
Related Party Transaction [Line Items]
Bareboat charter revenues, per day		$ 55,000
Financial Guarantee
Related Party Transaction [Line Items]
Guarantor obligations, current carrying value						$ 83,100,000	83,100,000	$ 83,100,000		$ 83,100,000
SFL Hercules \| Financial Guarantee
Related Party Transaction [Line Items]
Cash contribution										5,000,000
Seadrill \| Financial Guarantee
Related Party Transaction [Line Items]
Accounts Payable										$ 3,000,000
Minimum \| West Linus and West Hercules
Related Party Transaction [Line Items]
Expected percentage of revenue to be collected under existing charter agreements (as percent)					65.00%	65.00%
Maximum \| West Linus and West Hercules
Related Party Transaction [Line Items]
Expected percentage of revenue to be collected under existing charter agreements (as percent)					75.00%	75.00%
River Box
Related Party Transaction [Line Items]
Ownership percentage						49.90%		49.90%
SFL Linus & SFL Deepwater
Related Party Transaction [Line Items]
Number of subsidiaries for which company is primary beneficiary \| subsidiary	2
West Taurus
Related Party Transaction [Line Items]
Gain on sale of vessels			$ (600,000)				$ (600,000)
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| River Box
Related Party Transaction [Line Items]
Ownership percentage of disposed assets						50.10%		50.10%
Net proceeds received								$ 17,500,000
Gain on sale of subsidiaries, operating								$ 1,900,000