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Collaborative and Other Relationships Collaborative and Other Relationships - Collaboration Agreement (Details) (USD $) | 3 Months Ended | 6 Months Ended |  | 3 Months Ended | 1 Months Ended |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Mar. 31, 2014 Eisai | Mar. 31, 2014 Sangamo BioSciences | Jan. 31, 2014 Isis Pharmaceuticals | Mar. 31, 2014 Research and development Eisai | Jun. 30, 2014 JAPAN Eisai
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |
Total upfront and milestone payments |  |  |  |  | $ 100,000,000 | $ 20,000,000 |  |  |
Amount recorded to reflect fair value of options granted |  |  |  |  |  |  |  | 17,700,000 |
Milestone payments made during period |  |  |  |  |  |  |  |  | 35,000,000
Research and development | 447,273,000 | 327,463,000 | 976,157,000 | 611,803,000 |  | 20,000,000 | 45,000,000 |  | 21,600,000
Additional milestone payment |  |  |  |  | $ 1,000,000,000 | $ 300,000,000 |  |  |

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- Definition Liability For Fair Value Of Options Granted Under Agreement + References No definition available. + Details
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- Definition Total upfront and milestone payments made to collaborative partner. + References No definition available. + Details
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- Definition The costs incurred in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, excluding in-process research and development acquired in a business combination consummated during the period. Excludes software research and development, which has a separate concept. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Research and Development -URI http://asc.fasb.org/extlink&oid=6523717 + Details
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