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v3.20.1

Long-Term Debt - Additional Information - NOK Bonds (Detail) - Teekay LNG - Nibor Loan [Member] $ in Millions, kr in Billions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2019 NOK (kr) | Dec. 31, 2018 USD ($)
Norwegian Kroner Denominated Bonds Due Through Two Thousand Twenty Three [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, carrying amount for unsecured debt | kr |  | kr 3.1 |
Debt instrument, carrying amount | $ | $ 347.2 |  | $ 353.0
Derivative, Notional Amount | $ 382.5 | kr 3.1 |
Norwegian Kroner Denominated Bonds Due Through Two Thousand Twenty Three [Member] | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument spread on variable rate | 3.70% |  |
Norwegian Kroner Denominated Bonds Due Through Two Thousand Twenty Three [Member] | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument spread on variable rate | 6.00% |  |
Fixed interest rates based on cross currency swaps | 7.89% | 7.89% |
Norwegian Krone-denominated Bonds due through August 2023 | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Fixed interest rates based on cross currency swaps | 5.92% | 5.92% |

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