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Segment Reporting - Reconciliation of Total Segment Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Segment Reporting Information [Line Items] |  |
Total assets | $ (8,072,864) | $ (8,391,670)
Segment Reconciling Items | Cash and cash equivalents |  |
Segment Reporting Information [Line Items] |  |
Total assets | (353,241) | (424,169)
Segment Reconciling Items | Other assets not allocated |  |
Segment Reporting Information [Line Items] |  |
Total assets | (102,701) | (70,153)
Consolidation, Eliminations |  |
Segment Reporting Information [Line Items] |  |
Total assets | (14,746) | 19,414
Teekay Parent |  |
Segment Reporting Information [Line Items] |  |
Total assets | (1,055,191) | (1,246,858)
Teekay Offshore | Offshore Production | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total assets | 0 | (233,225)
Teekay LNG | Liquefied Gas Carriers | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total assets | (5,249,465) | (5,188,088)
Teekay LNG | Conventional Tankers | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total assets | 0 | (39,450)
Teekay Tankers | Conventional Tankers | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total assets | (2,140,652) | (2,106,169)
Teekay Parent [Member] | Corporate, Non-Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Total assets | (80,455) | (38,280)
Teekay Parent [Member] | Offshore Production | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total assets | $ (161,096) | $ (311,550)

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