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v3.21.2

RELATED PARTY TRANSACTIONS (Narrative) (Details) | 1 Months Ended | 2 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
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% |  |  |

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