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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 29, 2017
Earnings Per Share [Abstract] |
Schedule Of Computation Of Earnings Per Share And Effect On Weighted-Average Number Of Shares | The following table shows the computation of basic and diluted earnings per share:
Fiscal Years | 2017 |  | 2016 |  | 2015
(In millions, except per share data) |  |  |  |  |
Numerator: |  |  |  |  |
Net income attributable to Trimble Inc. | $ | 121.1 |  |  | $ | 132.4 |  |  | $ | 121.1 |
Denominator: |  |  |  |  |
Weighted average number of common shares used in basic earnings per share | 252.1 |  |  | 250.5 |  |  | 255.8 |
Effect of dilutive securities | 4.6 |  |  | 3.4 |  |  | 2.7 |
Weighted average number of common shares and dilutive potential common shares used in diluted earnings per share | 256.7 |  |  | 253.9 |  |  | 258.5 |
Basic earnings per share | $ | 0.48 |  |  | $ | 0.53 |  |  | $ | 0.47 |
Diluted earnings per share | $ | 0.47 |  |  | $ | 0.52 |  |  | $ | 0.47 |

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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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