XML 81 R59.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Acquisitions (Details) (USD $) | 12 Months Ended |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 TYSABRI product | Apr. 02, 2013 TYSABRI product | Dec. 31, 2013 Stromedix, Inc. | Dec. 31, 2012 Stromedix, Inc. | Mar. 08, 2012 Stromedix, Inc. | Mar. 07, 2012 Stromedix, Inc. | Dec. 31, 2013 Biogen Dompe SRL and Biogen Dompe Switzerland GmbH | Dec. 31, 2011 Biogen Dompe SRL and Biogen Dompe Switzerland GmbH | Sep. 06, 2011 Biogen Dompe SRL and Biogen Dompe Switzerland GmbH | Dec. 31, 2010 Biogen Idec Hemophilia | Dec. 31, 2013 Biogen Idec Hemophilia | Jan. 31, 2007 Biogen Idec Hemophilia | Mar. 08, 2012 STX One Hundred Stromedix, Inc.
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of TYSABRI rights | $ 3,262,719,000 | $ 0 | $ 0 | $ 3,250,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Deferred revenue | 172,700,000 | 148,000,000 |  |  | 84,400,000 |  |  |  |  |  |  |  |  |  |  |
Net intangible asset |  |  |  |  | 3,178,300,000 |  |  |  |  |  |  |  |  |  |  |
Estimated life, (In Years) |  |  |  | 17 years |  |  |  |  |  |  |  |  |  |  |  |
Future contingent payment for the first 12 months |  |  |  |  | 12.00% |  |  |  |  |  |  |  |  |  |  |
Future contingent payment for annual worldwide net sales up to $2.0 billion |  |  |  |  | 18.00% |  |  |  |  |  |  |  |  |  |  |
Future contingent payment threshold |  |  |  |  | 2,000,000,000 |  |  |  |  |  |  |  |  |  |  |
Future contingent payment for annual worldwide net sales that exceed $2.0 billion |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |
Cash portion of consideration |  |  |  |  |  |  | 75,000,000 |  |  |  | 152,900,000 |  |  |  |  |
Maximum contingent consideration in the form of development and approval milestones |  |  |  |  |  |  |  | 487,500,000 |  | 38,500,000 |  | 42,500,000 |  |  | 80,000,000 | 275,000,000
Contingent consideration obligation | 0 | 122,200,000 |  |  |  |  | 122,200,000 |  |  |  | 38,800,000 |  |  |  |  |
Total purchase price allocated to IPR&D |  |  |  |  |  |  |  | 219,200,000 |  |  |  |  |  |  |  |
Total purchase price allocated to goodwill | 1,232,916,000 | 1,201,296,000 | 1,146,300,000 |  |  |  |  | 48,200,000 |  |  |  |  |  |  |  |
Discount rate used to calculate fair value of in process research and development |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%
Other goodwill adjustments |  | 6,800,000 |  |  |  | (4,100,000) |  |  |  |  |  |  |  |  |  |
Percentage of equity interest to the portion of total capital stock |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |
Recognized gain |  |  |  |  |  |  | 9,000,000 |  |  |  |  |  |  |  |  |
Milestone payments made during period |  |  |  |  |  |  |  |  |  | 4,000,000 |  |  | 40,000,000 |  |  |
Additional contingent payment for Biologic license |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,000,000 |  |
Additional contingent payment for marketing authorization |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000 |  |

X
- Definition Business acquisition cost of acquired entity additional contingent consideration associated with approval of license application. + References No definition available. + Details
Name: | biib_BusinessAcquisitionCostOfAcquiredEntityAdditionalContingentConsiderationAssociatedWithApprovalOfLicenseApplication
Namespace Prefix: | biib_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business acquisition cost of acquired entity additional contingent consideration associated with grant of marketing authorization. + References No definition available. + Details
Name: | biib_BusinessAcquisitionCostOfAcquiredEntityAdditionalContingentConsiderationAssociatedWithGrantOfMarketingAuthorization
Namespace Prefix: | biib_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Discount rate used to calculate fair value of in process research and development. + References No definition available. + Details
Name: | biib_FairValueInProcessResearchAndDevelopmentDiscountRate
Namespace Prefix: | biib_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Future contingent payment for annual worldwide net sales that exceed $2.0 billion + References No definition available. + Details
Name: | biib_FutureContingentPaymentForAnnualWorldwideNetSalesThatExceed20Billion
Namespace Prefix: | biib_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Future contingent payment for annual worldwide net sales up to $2.0 billion + References No definition available. + Details
Name: | biib_FutureContingentPaymentForAnnualWorldwideNetSalesUpTo20Billion
Namespace Prefix: | biib_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Future contingent payment for the first 12 months + References No definition available. + Details
Name: | biib_FutureContingentPaymentForFirst12Months
Namespace Prefix: | biib_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Future contingent payment threshold + References No definition available. + Details
Name: | biib_FutureContingentPaymentThreshold
Namespace Prefix: | biib_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Gain/loss recognized during acquisition relating to pre-existing equity interest. + References No definition available. + Details
Name: | biib_GainLossRecognizedDuringAcquisitionRelatingToPreExistingEquityInterest
Namespace Prefix: | biib_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Milestone Payments Made During Period. + References No definition available. + Details
Name: | biib_MilestonePaymentsMadeDuringPeriod
Namespace Prefix: | biib_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Other Goodwill Adjustments + References No definition available. + Details
Name: | biib_OtherGoodwillAdjustments
Namespace Prefix: | biib_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. + 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 FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
Name: | us-gaap_DeferredRevenueCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireIntangibleAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration