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Other Commitments and Contingencies - Narrative (Details) $ in Thousands, € in Millions, £ in Millions |  | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 01, 2018 USD ($) | Sep. 30, 2018 GBP (£) tax_lease | Dec. 31, 2003 GBP (£) tax_lease | Sep. 30, 2018 USD ($) shares | Sep. 30, 2018 EUR (€) shares | Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of tax leases | tax_lease |  |  | 6 |  |  |
Gross cash benefit received from tax leases | £ |  |  | £ 41 |  |  |
Number of tax leases terminated | tax_lease |  | 5 |  |  |  |
Number of tax leases remaining | tax_lease |  | 1 |  |  |  |
Investments in affiliates |  |  |  | $ 702,222 |  | $ 703,225
Minimum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible exposure | £ |  | £ 0 |  |  |  |
Maximum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible exposure | £ |  | £ 112 |  |  |  |
Margin Loan Facility | Golar Partners, Common Units |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of common units pledged as security (in shares) | shares |  |  |  | 21,226,586 | 21,226,586 |
ECGS |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Commitments and contingencies |  |  |  | $ 1,000 |  |
Shareholders' Agreement, Project to Fund Development of Pipeline Infrastructure and FSRU [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Contractual obligation | € |  |  |  |  | € 0.5 |
Shareholders' Agreement, Project to Fund Development of Pipeline Infrastructure and FSRU [Member] | Maximum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Contractual obligation | € |  |  |  |  | € 15.0 |
Avenir LNG Ltd | Subsequent Event |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Ownership percentage | 25.00% |  |  |  |  |
Equity Method Investment Overall Commitment | $ 45,500 |  |  |  |  |
Investments in affiliates | 24,800 |  |  |  |  |
Avenir LNG Ltd | Subsequent Event | Stolt-Nielsen Ltd and Höegh LNG Holdings Ltd |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Investment company, committed capital | $ 182,000 |  |  |  |  |

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