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FINANCIAL INSTRUMENTS - Narrative (Details) | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 30, 2019 USD ($) shares | Dec. 31, 2019 USD ($) $ / shares shares | Dec. 31, 2018 USD ($) shares | Dec. 31, 2017 USD ($) $ / barrel | Jul. 06, 2016 | Jul. 31, 2013 USD ($)
Derivative [Line Items] |  |  |  |  |  |
Stock repurchased during period (in shares) | shares |  | 1,500,000 |  |  |  |
Cash collateral |  | $ 188,289,000 | $ 486,426,000 |  |  |
Investments, ownership percentage |  | 100.00% |  |  |  |
Investments in affiliates |  | $ 508,805,000 | $ 571,782,000 | $ 703,225,000 |  |
Share Repurchase Forward Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Collateral required under share repurchase agreement, percentage of total purchase price |  | 20.00% |  |  |  |
Cash collateral |  | $ 55,600,000 |  |  |  |
Golar Partners |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Investments, ownership percentage |  | 32.00% | 32.00% |  |  |
Investments in affiliates |  | $ 214,296,000 | $ 271,160,000 |  |  |
Ownership percentage |  | 32.00% | 32.00% |  |  |
Golar Power |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Investments in affiliates |  | $ 261,693,000 | $ 266,151,000 |  |  |
Ownership percentage |  | 50.00% | 50.00% |  | 50.00% |
Line of Credit | $1.125 billion newbuild facility | Secured Debt |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | $ 1,125,000,000 |  |  |  | $ 1,125,000,000
Oil derivative instrument |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative, floor price (in usd/barrel) | $ / barrel |  |  |  | 60.00 |  |
Equity Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Stock repurchased during period (in shares) | shares | 1,500,000 |  |  |  |  |
Derivative, fair value, net | $ 69,500,000 |  |  |  |  |
Derivative liability, fair value of collateral | 54,700,000 |  |  |  |  |
Notional value | 50,900,000 |  |  |  |  |
Shares acquired by counterparty (in shares) | shares |  | 1,500,000 | 3,000,000.0 |  |  |
Shares acquired by counterparty, per share price (in dollars per share) | $ / shares |  | $ 46.93 |  |  |  |
Loss on derivative |  | $ 30,500,000 |  |  |  |
Equity Swap | Treasury Shares |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional value | $ 18,600,000 |  |  |  |  |
Golar Partners |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Forward contract to purchase shares (in shares) | shares |  | 107,000 |  |  |  |
Forward contract to purchase shares, average price per share (in dollars per share) | $ / shares |  | $ 21.41 |  |  |  |

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