v3.4.0.3

Basic and diluted earnings (loss) per share (Tables) | 3 Months Ended
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Mar. 31, 2016
Basic and diluted earnings (loss) per share |
Schedule of diluted net income and potentially dilutive shares utilized in the per share calculation |
|  | 2016 |  | 2015 |
Numerator: |  |  |  |  |  |  |
(Loss) gain from continuing operations attributable to Atlantic Power Corporation |  | $ | (14.9) |  | $ | 22.3 |
Loss from discontinued operations, net of tax |  |  | — |  |  | (4.8) |
Net (loss) income attributable to Atlantic Power Corporation |  | $ | (14.9) |  | $ | 17.5 |
Denominator: |  |  |  |  |  |  |
Weighted average basic shares outstanding |  |  | 121.9 |  |  | 121.5 |
Dilutive potential shares: |  |  |  |  |  |  |
Convertible debentures |  |  | — |  |  | — |
LTIP notional units |  |  | 0.2 |  |  | 0.9 |
Potentially dilutive shares |  |  | 122.1 |  |  | 122.4 |
Diluted (loss) earnings per share from continuing operations attributable to Atlantic Power Corporation |  | $ | (0.12) |  | $ | 0.17 |
Diluted (loss) per share from discontinued operations |  |  | — |  |  | (0.03) |
Diluted (loss) earnings per share attributable to Atlantic Power Corporation |  | $ | (0.12) |  | $ | 0.14 |

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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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