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Net (Loss) Income Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Schedule of Income (Loss) Per Share |
| Year Ended December 31,
| 2017 $ |  | 2016 $ |  | 2015 $
Net (loss) income attributable to shareholders of Teekay Corporation | (163,276 | ) |  | (123,182 | ) |  | 82,151 |
The Company's portion of the Inducement Premium and Exchange Contribution charged to retained earnings by Teekay Offshore (note 16e) | — |  |  | (4,993 | ) |  | — |
Net (loss) income attributable to shareholders of Teekay Corporation for basic income (loss) per share | (163,276 | ) |  | (128,175 | ) |  | 82,151 |
Reduction in net earnings due to dilutive impact of stock-based compensation in Teekay LNG, Teekay Offshore and Teekay Tankers and stock purchase warrants in Teekay Offshore | (90 | ) |  | (25 | ) |  | (227 | )
Net (loss) income attributable to shareholders of Teekay Corporation for diluted income (loss) per share | (163,366 | ) |  | (128,200 | ) |  | 81,924 |
Weighted average number of common shares | 86,335,473 |  |  | 79,211,154 |  |  | 72,665,783 |
Dilutive effect of stock-based compensation | — |  |  | — |  |  | 524,781 |
Common stock and common stock equivalents | 86,335,473 |  |  | 79,211,154 |  |  | 73,190,564 |
(Loss) Earnings per common share: |  |  |  |  |
- Basic | (1.89 | ) |  | (1.62 | ) |  | 1.13 |
- Diluted | (1.89 | ) |  | (1.62 | ) |  | 1.12 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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