beatandraise : Equity Research with AI and ChatGPT on SEC Edgar

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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 false 553 Fair Value [Member] | 6.875% Senior Notes [Member] 0 na true na na No definition available. false true false false false false false false false false false http://biogenidec.com/role/fairvaluemeasurementsdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 50 USD true false false false Fair Value [Member] us-gaap_FairValueByBalanceSheetGroupingDisclosureItemAmountsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EstimateOfFairValueFairValueDisclosureMember us-gaap_FairValueByBalanceSheetGroupingDisclosureItemAmountsAxis explicitMember false false 6.875% Senior Notes [Member] biib_SeniorNotesAxis xbrldi http://xbrl.org/2006/xbrldi biib_SeniorNotesTwoMember biib_SeniorNotesAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 51 USD true false false false Fair Value [Member] us-gaap_FairValueByBalanceSheetGroupingDisclosureItemAmountsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EstimateOfFairValueFairValueDisclosureMember us-gaap_FairValueByBalanceSheetGroupingDisclosureItemAmountsAxis explicitMember false false 6.875% Senior Notes [Member] biib_SeniorNotesAxis xbrldi http://xbrl.org/2006/xbrldi biib_SeniorNotesTwoMember biib_SeniorNotesAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 false 577 Carrying Value [Member] 0 na true na na No definition available. false true false false false false false false false false false http://biogenidec.com/role/fairvaluemeasurementsdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 52 USD true false false false Carrying Value [Member] us-gaap_FairValueByBalanceSheetGroupingDisclosureItemAmountsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CarryingReportedAmountFairValueDisclosureMember us-gaap_FairValueByBalanceSheetGroupingDisclosureItemAmountsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 53 USD true false false false Carrying Value [Member] us-gaap_FairValueByBalanceSheetGroupingDisclosureItemAmountsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CarryingReportedAmountFairValueDisclosureMember us-gaap_FairValueByBalanceSheetGroupingDisclosureItemAmountsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. 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