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Write-down and loss on sale of vessels - Net (Loss) Gain on Sale of Vessels, Equipment and Other Operating Assets (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) vessel | Dec. 31, 2022 USD ($) vessel | Dec. 31, 2021 USD ($) vessel credit_facility
Property, Plant and Equipment [Line Items] |  |  |
Write-down / sales of vessels | $ (10,360) | $ (21,863) | $ 92,368
Gain (Loss) on Disposition of Assets | (10,400) |  |
Operating Lease, Impairment Loss |  | 1,100 | $ 700
At cost, less accumulated depreciation of $440,900 (2022 – $171,800) | $ 929,237 | 429,987 |
Number Of Vessels With Loss on Sale | vessel |  |  | 2
Teekay Parent [Member] | Other | FPSO |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Gain (Loss) on Disposition of Assets |  | (13,000) |
At cost, less accumulated depreciation of $440,900 (2022 – $171,800) |  | $ 0 |
Teekay Tankers | Suezmax |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Number Of Vessels Impaired | credit_facility |  |  | 3
Teekay Tankers | LR2 and Aframax Tankers |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Number Of Vessels Impaired | vessel |  |  | 4
Teekay Tankers | Suezmax, Aframax and LR2 Vessels |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Asset Impairment Charges |  |  | $ (85,000)
Teekay Tankers | Suezmax Tanker |  |  |
Property, Plant and Equipment [Line Items] |  |  |
number of vessels agreed to be sold | credit_facility |  |  | 1
Teekay Tankers | Suezmax, LR2 and Aframax Tankers |  |  |
Property, Plant and Equipment [Line Items] |  |  |
number of vessels agreed to be sold | vessel |  |  | 2
Teekay Tankers | Aframax Tanker [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Gain (Loss) on Disposition of Assets |  |  | $ (2,100)
Teekay Tankers | LR2 and Aframax Tankers |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Asset Impairment Charges |  |  | $ (4,600)
Number Of Vessels Sold | vessel | 1 | 3 | 4
Proceeds from sale of vessels and equipment (note 18) | $ 23,000 |  | $ 56,700
Number Of Vessels Write Down | vessel |  | 1 |
Teekay Tankers | Suezmax Tanker |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Number Of Vessels Sold | vessel |  | 1 |
Teekay Tankers | Suezmax, Aframax and LR2 Vessels |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Gain (Loss) on Disposition of Assets |  | $ (9,400) |
Proceeds from sale of vessels and equipment (note 18) |  | 68,400 |
Teekay Tankers | Suezmax, LR2 and Aframax Tankers |  |  |
Property, Plant and Equipment [Line Items] |  |  |
reversal of asset impairment charges |  | $ 600 |

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