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INVESTMENTS IN AFFILIATES - Narrative (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
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Nov. 08, 2018 $ / shares shares | Oct. 24, 2018 $ / shares | Oct. 01, 2018 USD ($) $ / shares shares | Nov. 15, 2017 USD ($) shares | Oct. 13, 2016 USD ($) $ / shares shares | Oct. 12, 2016 $ / shares | Jul. 25, 2016 | Nov. 30, 2017 shares | Dec. 31, 2018 USD ($) vessel $ / shares | Dec. 31, 2017 USD ($) $ / shares | Dec. 31, 2016 USD ($) | Jul. 06, 2016 | Dec. 31, 2011 USD ($) | Mar. 31, 2006 $ / shares shares
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, other than temporary impairment |  |  |  |  |  |  |  |  | $ 149,400 |  |  |  |  |
Minimum quarterly distribution per unit (in dollars per share) | $ / shares |  | $ 0.4042 |  |  | $ 0.5775 | $ 0.3850 |  |  |  |  |  |  |  |
Dividends received |  |  |  |  |  |  |  |  | 15,837 | $ 27,553 | $ 26,515 |  |  |
Derivative asset |  |  |  |  |  |  |  |  | $ 95,500 | 112,317 |  |  |  |
Percentage of voting interest acquired |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |
Interest costs capitalized |  |  |  |  |  |  |  |  | $ 148,100 |  |  |  |  |
Investment in affiliates |  |  |  |  |  |  |  |  | $ 571,782 | $ 703,225 | 648,780 |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 16 |  |  |  |  |
Number of vessels contributed | vessel |  |  |  |  |  |  |  |  | 8 |  |  |  |  |
Investments, ownership percentage |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Common shares, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 1.00 | $ 1.00 |  |  |  |
Egyptian Company for Gas Services S.A.E |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchased (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000
Common stock purchased, price per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
Percentage of voting interest acquired |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  | 50.00%
Investee capital share amount called |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,500 |
Cash paid to maintain equity interest |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,750 |
Ownership percentage, equity method investment |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |
Proceeds from dividends |  |  |  |  |  |  |  |  | $ 200 | $ 0 |  |  |  |
Golar Partners |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends received |  |  |  | $ 900 |  |  |  |  | $ 48,400 | $ 52,300 | $ 54,700 |  |  |
Avenir LNG Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method investment |  |  |  |  |  |  |  |  | 22.50% | 0.00% |  |  |  |
Ownership percentage after transaction | 22.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Investment in affiliates |  |  |  |  |  |  |  |  | $ 28,710 | $ 0 |  |  |  |
Goodwill |  |  |  |  |  |  |  |  | $ 3,800 |  |  |  |  |
Avenir LNG Ltd | Stolt-Nielsen Ltd and Höegh LNG Holdings Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment company, committed capital |  |  | $ 182,000 |  |  |  |  |  |  |  |  |  |  |
Avenir LNG Ltd | Stolt-Nielsen Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage after transaction | 45.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Avenir LNG Ltd | Hoegh LNG Holdings Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage after transaction | 22.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Golar Partners |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method investment |  |  |  |  |  |  |  |  | 32.00% | 31.80% |  |  |  |
Investment in affiliates |  |  |  |  |  |  |  |  | $ 271,160 | $ 467,097 |  |  |  |
Percentage of IDRs |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Investments, ownership percentage |  |  |  |  |  |  |  |  | 32.00% | 31.80% |  |  |  |
Golar Partners, Common Unit |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units (in shares) | shares |  |  |  | 374,295 | 2,994,364 |  |  |  |  |  |  |  |  |
Number of earn-out units (in shares) | shares |  |  |  |  | 748,592 |  |  | 374,295 |  |  |  |  |  |
Golar Partners, General Partner Units |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units (in shares) | shares |  |  |  | 7,639 | 61,109 |  |  |  |  |  |  |  |  |
Number of earn-out units (in shares) | shares |  |  |  |  | 15,278 |  |  | 7,639 |  |  |  |  |  |
OneLNG |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method investment |  |  |  |  |  |  |  |  | 51.00% | 51.00% |  |  |  |
Ownership percentage after transaction |  |  |  |  |  |  | 51.00% |  |  |  |  |  |  |
Investment in affiliates |  |  |  |  |  |  |  |  | $ 0 | $ 2,047 |  |  |  |
OneLNG | Schlumberger |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage after transaction |  |  |  |  |  |  | 49.00% |  |  |  |  |  |  |
The Cool Pool Limited (Pool Manager) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method investment |  |  |  |  |  |  |  |  | 50.00% | 33.00% |  |  |  |
GasLog |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels contributed | vessel |  |  |  |  |  |  |  |  | 6 |  |  |  |  |
Golar Power |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method investment |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  | 50.00% |  |
Related party transaction amount |  |  |  |  |  |  |  |  | $ 55,000 |  |  |  |  |
Interest costs capitalized |  |  |  |  |  |  |  |  | 10,500 | $ 6,600 |  |  |  |
Investment in affiliates |  |  |  |  |  |  |  |  | $ 266,151 | 228,696 |  |  |  |
Number of vessels contributed | vessel |  |  |  |  |  |  |  |  | 2 |  |  |  |  |
Equity Method Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of derivative |  |  |  |  | $ (15,000) |  |  |  |  |  |  |  |  |
Other Noncurrent Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of derivative |  |  |  |  | $ 15,000 |  |  |  |  |  |  |  |  |
Earn-Out Units |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liability |  |  |  |  |  |  |  |  |  | 7,400 |  |  |  |
Loss on derivative |  |  |  |  |  |  |  |  | $ 7,400 |  |  |  |  |
Derivative asset |  |  |  |  |  |  |  |  | $ 0 | $ 7,400 |  |  |  |
Private Placement | Avenir LNG Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment in affiliates |  |  | $ 24,800 |  |  |  |  |  |  |  |  |  |  |
Number of subsidiary shares sold in transaction | shares | 11,000,000 |  | 99,000,000 |  |  |  |  |  |  |  |  |  |  |
Shares subscribed but unissued | shares |  |  | 24,800,000 |  |  |  |  |  |  |  |  |  |  |
Common shares, par value (in dollars per share) | $ / shares |  |  | $ 1 |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share | $ / shares | $ 1.00 |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |
Avenir LNG Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method investment |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |
Avenir LNG Ltd | Stolt-Nielsen Ltd and Höegh LNG Holdings Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment company, committed capital |  |  | $ 182,000 |  |  |  |  |  |  |  |  |  |  |

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