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Segment Reporting - Other Income Statement Items by Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | $ (290,672) | $ (276,307) | $ (485,829)
Write-down and loss on sale of vessels | (170,310) | (53,693) | (270,743)
Equity Income (Loss) | (14,523) | 61,054 | (37,344)
Teekay Parent | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | (29,905) | (33,415) | (60,397)
Write-down and loss on sale of vessels | (178,330) | 0 | (205,659)
Equity Income (Loss) | 127 | 13,195 | (31,330)
Teekay Parent | Offshore Production | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | (29,710) | (33,271) | (60,560)
Write-down and loss on sale of vessels | (178,330) | 0 | (205,659)
Equity Income (Loss) | 0 | 15,089 | (7,861)
Teekay Parent | Conventional Tankers | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | 0 | 0 | 0
Write-down and loss on sale of vessels | 0 | 0 | 0
Equity Income (Loss) | 0 | (510) | (20,677)
Teekay Parent | Other | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | (195) | (144) | 163
Write-down and loss on sale of vessels | 0 | 0 | 0
Equity Income (Loss) | 127 | (1,384) | (2,792)
Teekay Offshore |  |  |
Segment Reporting Information [Line Items] |  |  |
Equity Income (Loss) | (75,814) | (6,907) | (2,461)
Equity Method Investment, Other than Temporary Impairment | 64,900 |  |
Equity Method Investment, Realized Gain (Loss) on Disposal | 8,900 |  |
Teekay Offshore | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | 0 | 0 | (219,406)
Write-down and loss on sale of vessels | 0 | 0 | (1,500)
Equity Income (Loss) | 0 | 0 | 12,028
Teekay LNG |  |  |
Segment Reporting Information [Line Items] |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal | 5,600 |  |
Teekay LNG | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | (136,765) | (124,378) | (105,545)
Write-down and loss on sale of vessels | 13,564 | (53,863) | (50,600)
Equity Income (Loss) | 58,819 | 53,546 | 9,789
Teekay LNG | Liquefied Gas Carriers | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | (136,069) | (119,108) | (95,025)
Write-down and loss on sale of vessels | 14,349 | (33,000) | 0
Equity Income (Loss) | 58,819 | 53,546 | 9,789
Teekay LNG | Conventional Tankers | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | (696) | (5,270) | (10,520)
Write-down and loss on sale of vessels | (785) | (20,863) | (50,600)
Equity Income (Loss) | 0 | 0 | 0
Teekay Tankers | Conventional Tankers | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and Amortization | (124,002) | (118,514) | (100,481)
Write-down and loss on sale of vessels | (5,544) | 170 | (12,984)
Equity Income (Loss) | $ 2,345 | $ 1,220 | $ (25,370)

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