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Agreements with SK hynix and Micron (Tables) | 3 Months Ended
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Mar. 31, 2016
SK hynix [Member] |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |
Revenue Recognition, Multiple-deliverable Arrangements [Table Text Block] | The cumulative cash receipts through March 31, 2016 and the remaining future cash receipts from the agreements with SK hynix are expected to be recognized as follows assuming no adjustments to the payments under the terms of the agreements (and assuming the option to make the lower payments begins with payments made during the middle of 2018):
| Cumulative Received to-date as of March 31, |  | Estimated to Be Received in |  |  |  | Total Estimated Cash Receipts
| 2016 |  | Remainder of 2016 |  | 2017 |  | 2018 |  | 2019 |  | 2020 |  | 2021 and Thereafter |
(in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty revenue | $ | 142.1 |  |  | $ | 48.0 |  |  | $ | 48.0 |  |  | $ | 40.0 |  |  | $ | 32.0 |  |  | $ | 48.0 |  |  | $ | 168.0 |  |  | $ | 526.1 |
Gain from settlement | 1.9 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1.9 |
Total | $ | 144.0 |  |  | $ | 48.0 |  |  | $ | 48.0 |  |  | $ | 40.0 |  |  | $ | 32.0 |  |  | $ | 48.0 |  |  | $ | 168.0 |  |  | $ | 528.0 |
Micron [Member] |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |
Revenue Recognition, Multiple-deliverable Arrangements [Table Text Block] | The cumulative cash receipts through March 31, 2016 and the remaining future cash receipts from the agreements with Micron are expected to be recognized as follows assuming no adjustments to the payments under the terms of the agreements:
| Cumulative Received to-date as of March 31, |  | Estimated to Be Received in | Total Estimated Cash Receipts
| 2016 |  | Remainder of 2016 |  | 2017 |  | 2018 |  | 2019 |  | 2020 |
(in millions) |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty revenue | $ | 92.3 |  |  | $ | 29.9 |  |  | $ | 40.0 |  |  | $ | 40.0 |  |  | $ | 40.0 |  |  | $ | 34.5 |  |  | $ | 276.7 |
Gain from settlement | 3.2 |  |  | 0.1 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 3.3 |
Total | $ | 95.5 |  |  | $ | 30.0 |  |  | $ | 40.0 |  |  | $ | 40.0 |  |  | $ | 40.0 |  |  | $ | 34.5 |  |  | $ | 280.0 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of the recognition of revenue arrangements under which the entity does or will perform multiple revenue-generating activities, categorized by type of arrangement. This item includes certain revenue arrangements that include software elements. This item does not include multiple-deliverable arrangements for industries that prepare disclosures under specific requirements (for instance, construction-type and production-type contracts) otherwise provided for in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 25 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51671369&loc=d3e50766-111635 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 25 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=51671369&loc=SL6750900-111635 + Details
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