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Segment Reporting - Capital Expenditures by Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Segment Reporting Information [Line Items] |  |
Other Income Statement Items by Segment | The following table includes capital expenditures by segment, excluding such amounts of the Company’s Teekay Gas Business (see Note 22), for the periods presented in these financial statements.
| December 31, 2024 $ |  | December 31, 2023 $
Tankers | 4,841 |  | 10,198
Tankers [Member] | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Segment, Expenditure, Addition to Long-Lived Assets | $ 4,841 |
Teekay Tankers | Tankers [Member] | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Segment, Expenditure, Addition to Long-Lived Assets |  | $ 10,198

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- Definition Amount of expenditure for addition to long-lived assets included in determination of segment assets by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Excludes expenditure for addition to financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 25 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-25 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482785/280-10-55-48 + Details
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