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Net income per common share attributable to Microchip Technology Stockholders (Tables) | 12 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Schedule of Computation of Basic and Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted net income per common share from continuing operations attributable to Microchip stockholders (in millions, except per share amounts):
| Year Ended March 31,
| 2018 |  | 2017 |  | 2016
Net income from continuing operations attributable to Microchip Technology Stockholders | $ | 255.4 |  |  | $ | 170.6 |  |  | $ | 324.1 |
Weighted average common shares outstanding | 232.9 |  |  | 217.2 |  |  | 203.4 |
Dilutive effect of stock options and RSUs | 4.4 |  |  | 4.4 |  |  | 3.3 |
Dilutive effect of 2007 Junior Debt | 1.3 |  |  | 12.7 |  |  | 10.7 |
Dilutive effect of 2015 Senior Debt | 10.3 |  |  | 0.5 |  |  | — |
Dilutive effect of 2017 Senior Debt | — |  |  | — |  |  | — |
Dilutive effect of 2017 Junior Debt | — |  |  | — |  |  | — |
Weighted average common and potential common shares outstanding | 248.9 |  |  | 234.8 |  |  | 217.4 |
Basic net income per common share from continuing operations attributable to Microchip stockholders | $ | 1.10 |  |  | $ | 0.79 |  |  | $ | 1.59 |
Diluted net income per common share from continuing operations attributable to Microchip stockholders | $ | 1.03 |  |  | $ | 0.73 |  |  | $ | 1.49 |
Convertible Debt | The following table sets forth the applicable Conversion Rates adjusted for dividends declared since issuance of such series of Convertible Debt and the applicable Incremental Share Factors and Maximum Conversion Rates as adjusted for dividends paid since the applicable issuance date:
| Dividend adjusted rates as of March 31, 2018
| Conversion Rate, adjusted |  | Approximate Conversion Price, adjusted |  | Incremental Share Factor, adjusted |  | Maximum Conversion Rate, adjusted
2017 Senior Debt | 10.1162 |  |  | $ | 98.85 |  |  | 5.0581 |  |  | 14.4156 |
2015 Senior Debt | 15.7755 |  |  | $ | 63.39 |  |  | 7.8878 |  |  | 22.0857 |
2017 Junior Debt | 10.2969 |  |  | $ | 97.12 |  |  | 5.1485 |  |  | 14.4156 |
The following is the weighted average conversion price per share used in calculating the dilutive effect (See Note 11 for details on the convertible debt):
| Year Ended March 31,
| 2018 |  | 2017 |  | 2016
2007 Junior Debt (1) | $ | 23.59 |  |  | $ | 24.01 |  |  | $ | 24.73 |
2015 Senior Debt | $ | 63.94 |  |  | $ | 65.21 |  |  | $ | 67.19 |
2017 Senior Debt | $ | 99.71 |  |  | $ | 100.58 |  |  | $ | — |
2017 Junior Debt | $ | 97.96 |  |  | $ | 98.81 |  |  | $ | — |
(1) No longer outstanding as of December 31, 2018.

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- Definition Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. + References No definition available. + Details
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- References No definition available. + Details
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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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