Co-promotion of sales and medical affairs percentage.

No definition available.

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- Definition

Maximum dollar amount of milestone payments eligible to be received under a collaboration arrangement.

+ References

No definition available.

+ Details

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- Definition

Milestone Payments Earned To Date Under Collaboration Agreement.

+ References

No definition available.

+ Details

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- Definition

Percentage of all Sublicensing Income, as defined in agreement, payable to licensor.

+ References

No definition available.

+ Details

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- Definition

Remaining development milestone payments that are eligible to be received in the future under collaboration arrangements.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Remaining sales milestone payments that are eligible to be received in the future under collaboration arrangements.

+ References

No definition available.

+ Details

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- Definition

Royalties at percentage rates ranging.

+ References

No definition available.

+ Details

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- Details

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- 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

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Collaboration Agreement - Collaboration Agreements with Astellas - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended				3 Months Ended
	Jun. 30, 2014 Collaborative agreement [Member]	Jun. 30, 2014 Astellas Pharma Inc. [Member] Collaborative agreement [Member]	Jun. 30, 2014 Development milestone payments [Member] Astellas Pharma Inc. [Member]	Jun. 30, 2014 Sales milestone payments [Member] Astellas Pharma Inc. [Member]	Dec. 31, 2009 Upfront cash payment arrangement [Member] Astellas Pharma Inc. [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Co-promotion of sales and medical affairs percentage	50.00%
Royalty received on ex-U.S. sales per collaboration arrangement		Low teens to the low twenties
Non-refundable, upfront cash payment					$ 110.0
Eligible to receive milestone payments			335.0	320.0
Milestone payments earned			155.0	25.0
Remaining future sales milestone payments the Company is eligible to receive				295.0
Remaining future development milestone payments the Company is eligible to receive			$ 180.0
Percentage of sublicensing income			10.00%