Future potential payments to be received.

No definition available.

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Period Type:	instant

- Definition

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response)

-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1)

-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Collaboration and Licensing Agreements - Additional Information (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended						3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		1 Months Ended
	May 31, 2014 AstraZeneca	Dec. 31, 2013 AstraZeneca	Oct. 31, 2012 AstraZeneca	Jun. 30, 2014 AstraZeneca	Jun. 30, 2014 AstraZeneca Future Development Milestones	Jun. 30, 2014 AstraZeneca Launch, Commercialization, and Sales Milestones	Jun. 30, 2014 AstraZeneca Amortization of Up-Front and Other License Fees	Jun. 30, 2013 AstraZeneca Amortization of Up-Front and Other License Fees	Jun. 30, 2014 AstraZeneca Amortization of Up-Front and Other License Fees	Jun. 30, 2013 AstraZeneca Amortization of Up-Front and Other License Fees	Jun. 30, 2014 AstraZeneca Collaborative Development Services	Jun. 30, 2013 AstraZeneca Collaborative Development Services	Jun. 30, 2014 AstraZeneca Collaborative Development Services	Jun. 30, 2013 AstraZeneca Collaborative Development Services	May 31, 2014 Sanofi	Jun. 30, 2014 Sanofi
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Deferred Revenue, Additions	$ 25.0	$ 15.0	$ 35.0
Future potential payments to be recieved				795.0	197.5	597.5										196.8
Revenue recognized							6.50	2.00	9.70	4.00	2.60	5.30	7.90	9.90	1.25
Deferred revenue		$ 40.3		$ 56.4