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Commitments and Contingencies - Additional Information - Legal Proceedings and Claims - Teekay Nakilat Capital Lease (Details) - Teekay LNG £ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 USD ($) vessel agreement | Dec. 31, 2017 GBP (£) agreement | Dec. 31, 2016 USD ($) | Dec. 31, 2016 GBP (£)
Teekay Nakilat Corporation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Share of potential exposure | 70.00% |  |  |
Number of vessels | vessel | 3 |  |  |
RasGas II LNG Carriers | Foreign Tax Authority |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Estimated shares of lease rental increase claim | $ 50.0 |  |  |
Teekay Nakilat Corporation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of lease agreements | agreement | 3 | 3 |  |
Lease term | 30 years |  |  |
Tax indemnification | $ 62.7 | £ 46.4 | $ 13.3 | £ 10.8
Security Deposit | Teekay Nakilat Corporation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Restricted cash | $ 7.0 |  | $ 6.8 |

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