Additional milestone payment.

No definition available.

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- Definition

Equity method investment ownership percentage maximum.

+ References

No definition available.

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- Definition

Equity Method Investments, Expected Profit Share

+ References

No definition available.

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- Definition

Investments by third party in joint venture as per agreement

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No definition available.

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- Definition

Joint venture owner ship percentage by third party.

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

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-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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-Topic 230

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-Section 45

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-Publisher SEC

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Article 7

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- Definition

Revenues from the sale of other goods or rendering of other services, not elsewhere specified in the taxonomy; net of (reduced by) sales adjustments, returns, allowances, and discounts.

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-Publisher FASB

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-Topic 225

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-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a),(d))

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

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

-Publisher FASB

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-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

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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.

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

-Paragraph 1

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-Name Accounting Standards Codification

-Glossary Research and Development

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Collaborative and Other Relationships Collaborative and Other Relationships - Equity Method Investments (Details)	3 Months Ended		1 Months Ended		3 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Feb. 29, 2012 Samsung Biosimilar Agreement [Member] USD ($)	Feb. 29, 2012 Samsung Biosimilar Agreement [Member] KRW	Mar. 31, 2015 Samsung Biosimilar Agreement [Member] USD ($)	Mar. 31, 2015 Samsung Biosimilar Agreement [Member] KRW	Mar. 31, 2014 Samsung Biosimilar Agreement [Member] USD ($)	Dec. 31, 2013 Samsung Biosimilar Agreement [Member] USD ($)	Dec. 31, 2014 Samsung Biosimilar Agreement [Member] USD ($)	Dec. 31, 2014 Samsung Biosimilar Agreement [Member] KRW
Schedule of Equity Method Investments [Line Items]
Contribution from Samsung to develop, manufacture and market biosimilar pharmaceuticals			$ 250,000,000	280,500,000,000
Variable interest entity, qualitative or quantitative information, ownership percentage			85.00%	85.00%
Contribution from Biogen to develop, manufacture and market biosimilar pharmaceuticals			45,000,000	49,500,000,000	12,400,000	13,600,000,000			8,600,000	9,100,000,000
Percentage of stake in entity minimum			15.00%	15.00%	10.00%	10.00%
Additional contribution made to Samsung Bioepis					5,700,000	6,300,000,000
Percentage of stake in entity maximum			49.90%	49.90%
Recognized loss	(834,000)	(7,605,000)			(800,000)		(7,600,000)
Research and development	460,549,000	528,884,000						36,000,000
Additional milestone payment								75,000,000
Expected profit share with Samsung Bioepis								50.00%
Revenue related to technical development and technology transfer services	$ 52,030,000us-gaap_OtherSalesRevenueNet	$ 90,101,000us-gaap_OtherSalesRevenueNet			$ 18,900,000		$ 24,100,000