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Segment Reporting - Revenue and Income from Vessel Operations by Segment - Intersegment revenue (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 1,880,332 | $ 2,328,569 | $ 2,450,382
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 70,590 | 92,254 | 108,340
Teekay Parent |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 5,089 | 14,142 | 34,373
Teekay Parent | Conventional Tankers | Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 3,080
Teekay Offshore | Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 34,232 | 49,514 | 67,993
Teekay LNG | Liquefied Gas Carriers | Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 36,358 | 37,336 | 35,887
Teekay Tankers | Conventional Tankers | Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 0 | $ 5,404 | $ 1,380

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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