Segment disclosures

Company overview

Biogen Inc.

Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.

Revenue · Reported segment facts

34 dimension combinations 121 retained observations 13 reported periods

Counts describe retained dimensioned rows only. Periods and members can change across reports, and this view does not infer missing values or expected segment totals.

Contract Manufacturing Royalty And Other Revenue · Europe Excluding Germany · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;srt:StatementGeographicalAxis=biib:EuropeExcludingGermanyMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-3110800000 USD20260206Open filing evidence
2024-01-01 – 2024-12-31400000 USD20260206Open filing evidence
2023-01-01 – 2023-12-3111700000 USD20260206Open filing evidence

Contract Manufacturing Royalty And Other Revenue · Segment Geographical Groups Of Countries Group Other · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;srt:StatementGeographicalAxis=biib:SegmentGeographicalGroupsOfCountriesGroupOtherMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-310 USD20260206Open filing evidence
2024-01-01 – 2024-12-310 USD20260206Open filing evidence
2023-01-01 – 2023-12-310 USD20260206Open filing evidence

Contract Manufacturing Royalty And Other Revenue · DE · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;srt:StatementGeographicalAxis=country:DE;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-310 USD20260206Open filing evidence
2024-01-01 – 2024-12-310 USD20260206Open filing evidence
2023-01-01 – 2023-12-310 USD20260206Open filing evidence

Contract Manufacturing Royalty And Other Revenue · US · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;srt:StatementGeographicalAxis=country:US;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-31414700000 USD20260206Open filing evidence
2024-01-01 – 2024-12-31395000000 USD20260206Open filing evidence
2023-01-01 – 2023-12-31673600000 USD20260206Open filing evidence

Contract Manufacturing Royalty And Other Revenue · Asia · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;srt:StatementGeographicalAxis=srt:AsiaMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-31307400000 USD20260206Open filing evidence
2024-01-01 – 2024-12-31257200000 USD20260206Open filing evidence
2023-01-01 – 2023-12-31214000000 USD20260206Open filing evidence

Contract Manufacturing Royalty And Other Revenue · Reportable Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-31732900000 USD20260206Open filing evidence
2024-01-01 – 2024-12-31652600000 USD20260206Open filing evidence
2023-01-01 – 2023-12-31899300000 USD20260206Open filing evidence
2022-01-01 – 2022-12-31485100000 USD20250212Open filing evidence

Revenues From Anti CD20 Therapeutic Programs · Europe Excluding Germany · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;srt:StatementGeographicalAxis=biib:EuropeExcludingGermanyMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-311800000 USD20260206Open filing evidence
2024-01-01 – 2024-12-31600000 USD20260206Open filing evidence
2023-01-01 – 2023-12-31400000 USD20260206Open filing evidence

Revenues From Anti CD20 Therapeutic Programs · Segment Geographical Groups Of Countries Group Other · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;srt:StatementGeographicalAxis=biib:SegmentGeographicalGroupsOfCountriesGroupOtherMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-3183400000 USD20260206Open filing evidence
2024-01-01 – 2024-12-3175700000 USD20260206Open filing evidence
2023-01-01 – 2023-12-3170700000 USD20260206Open filing evidence

Revenues From Anti CD20 Therapeutic Programs · DE · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;srt:StatementGeographicalAxis=country:DE;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-310 USD20260206Open filing evidence
2024-01-01 – 2024-12-310 USD20260206Open filing evidence
2023-01-01 – 2023-12-310 USD20260206Open filing evidence

Revenues From Anti CD20 Therapeutic Programs · US · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;srt:StatementGeographicalAxis=country:US;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-311775400000 USD20260206Open filing evidence
2024-01-01 – 2024-12-311673600000 USD20260206Open filing evidence
2023-01-01 – 2023-12-311618500000 USD20260206Open filing evidence

Revenues From Anti CD20 Therapeutic Programs · Asia · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;srt:StatementGeographicalAxis=srt:AsiaMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-310 USD20260206Open filing evidence
2024-01-01 – 2024-12-310 USD20260206Open filing evidence
2023-01-01 – 2023-12-310 USD20260206Open filing evidence

Revenues From Anti CD20 Therapeutic Programs · Reportable Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-311860600000 USD20260206Open filing evidence
2024-01-01 – 2024-12-311749900000 USD20260206Open filing evidence
2023-01-01 – 2023-12-311689600000 USD20260206Open filing evidence
2022-01-01 – 2022-12-311700500000 USD20250212Open filing evidence

Product · Europe Excluding Germany · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:StatementGeographicalAxis=biib:EuropeExcludingGermanyMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-311871600000 USD20260206Open filing evidence
2024-01-01 – 2024-12-312171500000 USD20260206Open filing evidence
2023-01-01 – 2023-12-312127400000 USD20260206Open filing evidence

Product · Segment Geographical Groups Of Countries Group Other · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:StatementGeographicalAxis=biib:SegmentGeographicalGroupsOfCountriesGroupOtherMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-31427800000 USD20260206Open filing evidence
2024-01-01 – 2024-12-31482200000 USD20260206Open filing evidence
2023-01-01 – 2023-12-31460500000 USD20260206Open filing evidence

Product · DE · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:StatementGeographicalAxis=country:DE;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-31853000000 USD20260206Open filing evidence
2024-01-01 – 2024-12-31955600000 USD20260206Open filing evidence
2023-01-01 – 2023-12-31868000000 USD20260206Open filing evidence

Product · US · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:StatementGeographicalAxis=country:US;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-313547900000 USD20260206Open filing evidence
2024-01-01 – 2024-12-313237300000 USD20260206Open filing evidence
2023-01-01 – 2023-12-313141400000 USD20260206Open filing evidence

Product · Asia · Reportable Segment

Product Or Service · Statement Geographical · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:StatementGeographicalAxis=srt:AsiaMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-31419100000 USD20260206Open filing evidence
2024-01-01 – 2024-12-31366900000 USD20260206Open filing evidence
2023-01-01 – 2023-12-31649400000 USD20260206Open filing evidence

Product · Reportable Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-317119400000 USD20260206Open filing evidence
2024-01-01 – 2024-12-317213500000 USD20260206Open filing evidence
2023-01-01 – 2023-12-317246700000 USD20260206Open filing evidence
2022-01-01 – 2022-12-317987800000 USD20250212Open filing evidence

Europe Excluding Germany · Contract Manufacturing Royalty And Other Revenue · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=biib:EuropeExcludingGermanyMember;srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31400000 USD20250212Open filing evidence
2023-01-01 – 2023-12-3111700000 USD20250212Open filing evidence
2022-01-01 – 2022-12-3111700000 USD20250212Open filing evidence

Europe Excluding Germany · Revenues From Anti CD20 Therapeutic Programs · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=biib:EuropeExcludingGermanyMember;srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31600000 USD20250212Open filing evidence
2023-01-01 – 2023-12-31400000 USD20250212Open filing evidence
2022-01-01 – 2022-12-31100000 USD20250212Open filing evidence

Europe Excluding Germany · Product · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=biib:EuropeExcludingGermanyMember;srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-312171500000 USD20250212Open filing evidence
2023-01-01 – 2023-12-312127400000 USD20250212Open filing evidence
2022-01-01 – 2022-12-312401300000 USD20250212Open filing evidence

Segment Geographical Groups Of Countries Group Other · Contract Manufacturing Royalty And Other Revenue · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=biib:SegmentGeographicalGroupsOfCountriesGroupOtherMember;srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-310 USD20250212Open filing evidence
2023-01-01 – 2023-12-310 USD20250212Open filing evidence
2022-01-01 – 2022-12-310 USD20250212Open filing evidence

Segment Geographical Groups Of Countries Group Other · Revenues From Anti CD20 Therapeutic Programs · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=biib:SegmentGeographicalGroupsOfCountriesGroupOtherMember;srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-3175700000 USD20250212Open filing evidence
2023-01-01 – 2023-12-3170700000 USD20250212Open filing evidence
2022-01-01 – 2022-12-3164000000 USD20250212Open filing evidence

Segment Geographical Groups Of Countries Group Other · Product · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=biib:SegmentGeographicalGroupsOfCountriesGroupOtherMember;srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31482200000 USD20250212Open filing evidence
2023-01-01 – 2023-12-31460500000 USD20250212Open filing evidence
2022-01-01 – 2022-12-31518900000 USD20250212Open filing evidence

DE · Contract Manufacturing Royalty And Other Revenue · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=country:DE;srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-310 USD20250212Open filing evidence
2023-01-01 – 2023-12-310 USD20250212Open filing evidence
2022-01-01 – 2022-12-310 USD20250212Open filing evidence

DE · Revenues From Anti CD20 Therapeutic Programs · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=country:DE;srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-310 USD20250212Open filing evidence
2023-01-01 – 2023-12-310 USD20250212Open filing evidence
2022-01-01 – 2022-12-310 USD20250212Open filing evidence

DE · Product · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=country:DE;srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31955600000 USD20250212Open filing evidence
2023-01-01 – 2023-12-31868000000 USD20250212Open filing evidence
2022-01-01 – 2022-12-31926200000 USD20250212Open filing evidence

US · Contract Manufacturing Royalty And Other Revenue · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=country:US;srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31395000000 USD20250212Open filing evidence
2023-01-01 – 2023-12-31673600000 USD20250212Open filing evidence
2022-01-01 – 2022-12-31425800000 USD20250212Open filing evidence

US · Revenues From Anti CD20 Therapeutic Programs · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=country:US;srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-311673600000 USD20250212Open filing evidence
2023-01-01 – 2023-12-311618500000 USD20250212Open filing evidence
2022-01-01 – 2022-12-311636400000 USD20250212Open filing evidence

US · Product · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=country:US;srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-313237300000 USD20250212Open filing evidence
2023-01-01 – 2023-12-313141400000 USD20250212Open filing evidence
2022-01-01 – 2022-12-313469300000 USD20250212Open filing evidence

Asia · Contract Manufacturing Royalty And Other Revenue · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=srt:AsiaMember;srt:ProductOrServiceAxis=biib:ContractManufacturingRoyaltyAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31257200000 USD20250212Open filing evidence
2023-01-01 – 2023-12-31214000000 USD20250212Open filing evidence
2022-01-01 – 2022-12-3147600000 USD20250212Open filing evidence

Asia · Revenues From Anti CD20 Therapeutic Programs · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=srt:AsiaMember;srt:ProductOrServiceAxis=biib:RevenuesFromAntiCD20TherapeuticProgramsMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-310 USD20250212Open filing evidence
2023-01-01 – 2023-12-310 USD20250212Open filing evidence
2022-01-01 – 2022-12-310 USD20250212Open filing evidence

Asia · Product · Reportable Segment

Statement Geographical · Product Or Service · Statement Business Segments

Source dimensions srt:StatementGeographicalAxis=srt:AsiaMember;srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31366900000 USD20250212Open filing evidence
2023-01-01 – 2023-12-31649400000 USD20250212Open filing evidence
2022-01-01 – 2022-12-31672100000 USD20250212Open filing evidence

Reportable Segment

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=biib:ReportableSegmentMember
PeriodValueUnitFiledEvidence
2026-07-01 – 2026-09-302804100000 USD2026-10-28 · 10:23:04.000ZOpen filing evidence
2026-01-01 – 2026-09-308017900000 USD2026-10-28 · 10:23:04.000ZOpen filing evidence
2026-04-01 – 2026-06-302736000000 USD20260729Open filing evidence
2026-01-01 – 2026-06-305213800000 USD20260729Open filing evidence
2026-01-01 – 2026-03-312477800000 USD20260429Open filing evidence
2025-01-01 – 2025-12-319890600000 USD20260206Open filing evidence
2025-07-01 – 2025-09-302534700000 USD2026-10-28 · 10:23:04.000ZOpen filing evidence
2025-01-01 – 2025-09-307611200000 USD2026-10-28 · 10:23:04.000ZOpen filing evidence
2025-04-01 – 2025-06-302645500000 USD20260729Open filing evidence
2025-01-01 – 2025-06-305076500000 USD20260729Open filing evidence
2025-01-01 – 2025-03-312431000000 USD20260429Open filing evidence
2024-01-01 – 2024-12-319675900000 USD20260206Open filing evidence
2024-07-01 – 2024-09-302465800000 USD20251030Open filing evidence
2024-01-01 – 2024-09-307221200000 USD20251030Open filing evidence
2024-04-01 – 2024-06-302464900000 USD20250731Open filing evidence
2024-01-01 – 2024-06-304755400000 USD20250731Open filing evidence
2024-01-01 – 2024-03-312290500000 USD20250501Open filing evidence
2023-01-01 – 2023-12-319835600000 USD20260206Open filing evidence
2022-01-01 – 2022-12-3110173400000 USD20250212Open filing evidence