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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
The following table reconciles the computation of basic and diluted earnings per share:
For the |  | Year ended December 31
millions of Canadian dollars (except per share amounts) |  | 2016 |  | 2015
Numerator |  |  |  |
Net income attributable to common shareholders | $ | 227.2 | $ | 397.2
Convertible Debentures |  | 0.2 |  | -
Diluted numerator |  | 227.4 |  | 397.2
Denominator |  |  |  |
Weighted average shares of common stock outstanding |  | 170.4 |  | 144.9
Weighted average deferred share units outstanding |  | 1.0 |  | 0.9
Weighted average shares of common stock outstanding – basic |  | 171.4 |  | 145.8
Stock-based compensation |  | 0.6 |  | 0.6
Convertible Debentures |  | 0.2 |  | -
Weighted average shares of common stock outstanding – diluted |  | 172.2 |  | 146.4
Earnings per common share |  |  |  |
Basic | $ | 1.33 | $ | 2.72
Diluted | $ | 1.32 | $ | 2.71

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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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