Biogen share of co-promotion profits or losses

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- Definition

Collaboration profit (loss) sharing

+ References

No definition available.

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- Definition

Equity method investment ownership percentage maximum.

+ References

No definition available.

+ Details

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
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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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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

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Collaborative and Other Relationships Collaborative and Other Relationships - Equity Method Investments (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 29, 2012	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule of Equity Method Investments [Line Items]
Collaboration profit (loss) sharing		$ 47.5	$ 35.2	$ 129.2	$ 82.5
Total revenues		$ 3,439.0	3,077.8	$ 9,926.6	8,966.9
Samsung Bioepis
Schedule of Equity Method Investments [Line Items]
Percentage of stake in entity		5.00%		5.00%
Percentage of stake in entity maximum	49.90%
Payments to acquire additional investment in equity method investment				$ 700.0
Biogen share of co-promotion profits or losses				50.00%
Collaboration profit (loss) sharing		$ 47.7	34.5	$ 131.2	80.5
Collaborative arrangement \| Samsung Bioepis
Schedule of Equity Method Investments [Line Items]
Total revenues		$ 48.1	$ 8.8	$ 80.7	$ 23.7