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Net Income Per Share Attributable to Lear (Tables) | 3 Months Ended
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Mar. 28, 2015
Earnings Per Share [Abstract] |
Summary of Information Used to Compute Basic and Diluted Net Income (Loss) Per Share | A summary of information used to compute basic and diluted net income per share attributable to Lear is shown below (in millions, except share and per share data):
| Three Months Ended
| March 28, 2015 |  | March 29, 2014
Net income attributable to Lear | $ | 147.3 |  |  | $ | 122.0 |
Average common shares outstanding | 78,250,590 |  |  | 81,075,811 |
Dilutive effect of common stock equivalents | 829,008 |  |  | 1,685,786 |
Average diluted shares outstanding | 79,079,598 |  |  | 82,761,597 |
Basic net income per share attributable to Lear | $ | 1.88 |  |  | $ | 1.50 |
Diluted net income per share attributable to Lear | $ | 1.86 |  |  | $ | 1.47 |

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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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