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Equity-accounted Investments - Additional Information (Detail) shares in Millions |  |  | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 13, 2017 | May 31, 2017 shares | Dec. 31, 2017 USD ($) lease | Mar. 31, 2017 USD ($) | Oct. 31, 2014 shares | Jun. 30, 2014 USD ($) vessel | Jan. 31, 2014 USD ($) shares | Jun. 30, 2013 | Dec. 31, 2017 USD ($) lease vessel m³ | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 11, 2017 USD ($) | Dec. 02, 2015 | Jun. 30, 2015 | Nov. 30, 2011 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 100.00% |  |  |  |  |  | 100.00% |  |  |  |  |  |
Long-term debt |  |  | $ 3,417,705,000 |  |  |  |  |  | $ 3,417,705,000 | $ 6,639,546,000 |  |  |  |  |
Investments in joint venture |  |  |  |  |  |  |  |  | 98,774,000 | 61,885,000 | $ 40,595,000 |  |  |  |
Investment in equity private placement |  |  | $ 1,130,198,000 |  |  |  |  |  | 1,130,198,000 | 1,010,308,000 |  |  |  |  |
Equity income |  |  |  |  |  |  |  |  | (37,344,000) | 85,639,000 | 102,871,000 |  |  |  |
Unrealized gain (loss) on interest rate swaps |  |  |  |  |  |  |  |  | $ 7,700,000 | $ 8,700,000 | $ 5,900,000 |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 52.00% |  |  |  |  |  | 52.00% |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 14.00% |  |  |  |  |  | 14.00% |  |  |  |  |  |
Teekay Offshore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Difference between carrying amount and book value |  |  | $ 3,800,000 |  |  |  |  |  | $ 3,800,000 |  |  |  |  |  |
Exmar LPG Joint Venture | Newbuildings | Shipbuilding supervision and crew training services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |
Sevan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 43.50% |  |  |  |  |  | 43.50% | 43.50% |  |  |  |  | 40.00%
Investment in equity private placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,000,000
Quoted market value of investment of existing contract |  |  | $ 40,400,000 |  |  |  |  |  | $ 40,400,000 | $ 44,900,000 |  |  |  |  |
Bahrain LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 30.00% |  |
Yamal LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 50.00% |  |  |  |  |  | 50.00% |  |  |  |  |  |
Due from joint ventures |  |  |  |  |  |  |  |  |  | 146,700,000 |  |  |  |  |
Proceeds from equity method investment |  |  | $ 52,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Tax indemnification |  |  | 600,000 |  |  |  |  |  | $ 600,000 | 0 |  |  |  |  |
Yamal LNG Joint Venture | Newbuildings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 6 |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  | $ 816,000,000 |  |  |
RasGas3 Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |
Teekay LNG | Excalibur Joint Venture And Excelsior Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Difference between carrying amount and book value |  |  | 35,600,000 |  |  |  |  |  | $ 35,600,000 | 37,200,000 |  |  |  |  |
Tax indemnification |  |  | $ 200,000 |  |  |  |  |  | $ 200,000 | 200,000 |  |  |  |  |
Guarantee minimum liquidity as percentage |  |  | 50.00% |  |  |  |  |  | 50.00% |  |  |  |  |  |
Teekay LNG | Exmar LPG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Difference between carrying amount and book value |  |  | $ 25,500,000 |  |  |  |  |  | $ 25,500,000 | 30,200,000 |  |  |  |  |
Due from joint ventures |  |  | 52,300,000 |  |  |  |  |  | 52,300,000 | 52,300,000 |  |  |  |  |
Tax indemnification |  |  | $ 1,600,000 |  |  |  |  |  | $ 1,600,000 | 1,300,000 |  |  |  |  |
Guarantee minimum liquidity as percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |
Number of capital leased assets | lease |  |  | 4 |  |  |  |  |  | 4 |  |  |  |  |  |
Interest receivable |  |  | $ 200,000 |  |  |  |  |  | $ 200,000 | 1,100,000 |  |  |  |  |
Teekay LNG | Pan Union Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Difference between carrying amount and book value |  |  | 11,400,000 |  |  |  |  |  | $ 11,400,000 | 16,800,000 |  |  |  |  |
Teekay LNG | Pan Union Joint Venture | Newbuildings | Shipbuilding supervision and crew training services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  | 4 |  |  | 3 |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  | 87,000,000 |  |  |  |  |  | $ 87,000,000 |  |  |  |  |  |
In-process revenue contracts (note 6) |  |  | 8,200,000 |  |  | $ 36,900,000 |  |  | 8,200,000 | 22,600,000 |  |  |  |  |
Long-term receivable |  |  | $ 3,500,000 |  |  | 20,300,000 |  |  | $ 3,500,000 | 10,900,000 |  |  |  |  |
Teekay LNG | Bahrain LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  | 30.00% |  |  |  |  |  | 30.00% |  |  |  |  |  |
Investments in and advances to affiliates |  |  |  |  |  |  |  |  | $ 100,000 | 100,000 |  |  |  |  |
Debt instrument spread on variable rate |  |  |  |  |  |  |  |  | 1.25% |  |  |  |  |  |
Teekay LNG | Yamal LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and advances to affiliates |  |  |  |  |  |  |  |  | $ 9,400,000 |  |  |  |  |  |
Teekay LNG | Yamal LNG Joint Venture | Newbuildings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 6 |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  | $ 816,000,000 |  |  |  |  |  | $ 816,000,000 |  |  |  |  |  |
Volume of vessels | m³ |  |  |  |  |  |  |  |  | 172,000 |  |  |  |  |  |
Teekay LNG | Teekay LNG - Marubeni Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 52.00% |  |  |  |  |  | 52.00% |  |  |  |  |  |
Tax indemnification |  |  | $ 500,000 |  |  |  |  |  | $ 500,000 | 100,000 |  |  |  |  |
Guarantee minimum liquidity as percentage |  |  | 52.00% |  |  |  |  |  | 52.00% |  |  |  |  |  |
Investments in joint venture |  |  |  | $ 57,000,000 |  |  |  |  |  |  |  |  |  |  |
Teekay LNG | Angola LNG Carriers | Newbuildings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 33.00% |  |  |  |  |  | 33.00% |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |
Volume of vessels | m³ |  |  |  |  |  |  |  |  | 160,400 |  |  |  |  |  |
Teekay LNG | Angola LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 33.00% |  |  |  |  |  | 33.00% |  |  |  |  |  |
Tax indemnification |  |  | $ 700,000 |  |  |  |  |  | $ 700,000 | 1,000,000 |  |  |  |  |
Teekay LNG | RasGas3 Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 40.00% |  |  |  |  |  | 40.00% |  |  |  |  |  |
Teekay LNG | LIBOR | Exmar LPG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument spread on variable rate |  |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |
Teekay LNG - Marubeni Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  | 396,000,000 |  |  |  |  |  |  |  |  |  |  |
Debt instrument, principal amount |  |  |  | $ 335,000,000 |  |  |  |  |  |  |  |  |  |  |
Yamal LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due from joint ventures |  |  | $ 195,000,000 |  |  |  |  |  | $ 195,000,000 |  |  |  |  |  |
Proceeds from equity method investment |  |  | 104,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Yamal LNG Joint Venture | Newbuildings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  | $ 1,600,000,000 |  |  |
Teekay and Teekay Tankers | Tanker Investments Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  |  |  |  |  | 20.00% |  |  |  |  |  |  |  |
Issuance of equity private placement |  |  |  |  |  |  | $ 250,000,000 |  |  |  |  |  |  |  |
Equity method investment |  |  |  |  |  |  | $ 50,000,000 |  |  |  |  |  |  |  |
Teekay Offshore | FPSO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |
Teekay Offshore | Odebrecht Oil & Gas S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |
Teekay Offshore | Odebrecht Oil & Gas S.A. | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt term |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |
Teekay Offshore | Odebrecht Oil & Gas S.A. | Newbuildings | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  | 804,000,000 |  |  |  |  |  | 804,000,000 |  |  |  |  |  |
Teekay Offshore | OOG-TKP FPSO GmbH & Co KG |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt term |  |  |  |  |  |  |  | 8 years |  |  |  |  |  |  |
Long-term debt |  |  | $ 169,000,000 |  |  |  |  |  | $ 169,000,000 |  |  |  |  |  |
Teekay Tankers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Teekay Tankers | High-Q Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 50.00% |  |  |  |  |  | 50.00% |  |  |  |  |  |
Teekay Tankers | Tanker Investments Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership acquired |  |  |  |  | 2.43% |  |  |  |  |  |  |  |  |  |
Number of shares to be issued/exchanged (in shares) | shares |  | 27.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of equity private placement |  |  |  |  |  |  |  |  |  | $ 96,200,000 |  |  |  |  |
Common Stock | Teekay and Teekay Tankers | Tanker Investments Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of common stock (in shares) | shares |  |  |  |  |  |  | 5.0 |  |  |  |  |  |  |  |
Common Stock | Teekay Tankers | Tanker Investments Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of common stock (in shares) | shares |  |  |  |  | 0.9 |  |  |  |  |  |  |  |  |  |
Fair Value Asset (Liability) | Teekay LNG | Pan Union Joint Venture | Newbuildings | Shipbuilding supervision and crew training services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
In-process revenue contracts (note 6) |  |  |  |  |  | 33,300,000 |  |  |  |  |  |  |  |  |
Long-term receivable |  |  |  |  |  | $ 16,500,000 |  |  |  |  |  |  |  |  |
Thirty Percent Ownership | Teekay LNG | Pan Union Joint Venture | Newbuildings | Shipbuilding supervision and crew training services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 30.00% |  |  |  |  |  | 30.00% |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |
Twenty Percent Ownership | Teekay LNG | Pan Union Joint Venture | Newbuildings | Shipbuilding supervision and crew training services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 20.00% |  |  |  |  |  | 20.00% |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
China LNG | Yamal LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 50.00% |  |  |  |  |  | 50.00% |  |  |  |  |  |
NYK Energy Transport | Angola LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 33.00% |  |  |  |  |  | 33.00% |  |  |  |  |  |
Exmar NV | Teekay LNG | Exmar LPG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 50.00% |  |  |  |  |  | 50.00% |  |  |  |  |  |
Mitsui & Co. Ltd | Angola LNG Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest |  |  | 34.00% |  |  |  |  |  | 34.00% |  |  |  |  |  |
Pan Asia | Teekay LNG | Pan Union Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Charter contract period | 20 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pan Asia | Thirty Percent Ownership | Teekay LNG | Pan Union Joint Venture | Shipbuilding supervision and crew training services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |

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- Definition Debt covenants from certain debts held by the Company that is guaranteed by the Company's parent, which requires the Company's parent to maintain a minimum amount of free cash and undrawn committed revolving credit lines, as a percentage of the parent's total consolidated debt. + References No definition available. + Details
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