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Asset Impairments and Loss on Sales of Vessels, Equipment and Other Operating Assets - Additional Information - Asset Impairments (Detail) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 vessel | Aug. 31, 2017 | Dec. 31, 2015 vessel | Mar. 31, 2015 vessel | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) vessel | Dec. 31, 2015 USD ($) vessel
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Write down on vessel |  |  |  |  | $ 232,659,000 | $ 45,796,000 | $ 67,744,000
Total vessels and equipment |  |  |  |  | 5,208,544,000 | 9,138,886,000 |
Petrojarl Foinaven FPSO |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Number of vessels | vessel | 2 |  |  |  |  |  |
Write down on vessel |  |  |  |  | 113,000,000 |  |
Petrojarl Banff FPSO |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Write down on vessel |  |  |  |  | $ 205,700,000 |  |
Petrojarl Foinaven and Banff FPSO |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Discount rate |  |  |  |  | 10.00% |  |
Teekay LNG | Teide Spirit and Toledo Spirit |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Write down on vessel |  |  |  |  | $ 25,500,000 |  |
Cancellation option period |  | 13 years |  |  |  |  |
Teekay Offshore |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Discount rate |  |  |  |  | 10.00% |  |
Teekay Offshore | Offshore Logistics | Impaired Asset | 1990-built Shuttle Tankers | Cost Approach Valuation Technique | Operating Segments |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Number of vessels | vessel |  |  | 5 |  |  |  |
Teekay Offshore | Offshore Logistics | Impaired Asset | 1990-built Shuttle Tankers | Discontinued Operations, Held-for-sale | Cost Approach Valuation Technique | Operating Segments |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  | 1 |  |  | 7
Teekay Offshore | Units for Maintenance and Safety |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Write down on vessel |  |  |  |  |  | $ 43,700,000 |
Teekay Offshore | Units for Maintenance and Safety | Impaired Asset |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  |  |  | 2 |
Total vessels and equipment |  |  |  |  |  | $ 0 |
Teekay Offshore | Five Shuttle Tankers | 1990-built Shuttle Tankers |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Estimated useful life |  |  |  |  |  |  | 17 years 6 months
Teekay Offshore | Seven Shuttle Tankers | 1990-built Shuttle Tankers |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Write down on vessel |  |  |  |  |  |  | $ 66,700,000
Teekay Offshore | Navion Marita | Offshore Logistics |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Write down on vessel |  |  |  |  |  | $ 2,100,000 |

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