$BIIB
BIOGEN INC.

2022 Q4 Form 10-Q Financial Statement

#000087504522000031 Filed on October 25, 2022

View on sec.gov

Income Statement

Concept 2022 Q4 2022 Q3
Revenue $2.544B $2.509B
YoY Change -6.94% -9.73%
Cost Of Revenue $570.9M $469.5M
YoY Change -13.51% -8.26%
Gross Profit $1.973B $2.039B
YoY Change -4.85% -10.06%
Gross Profit Margin 77.56% 81.28%
Selling, General & Admin $632.8M $563.3M
YoY Change -19.69% -13.88%
% of Gross Profit 32.07% 27.63%
Research & Development $601.6M $549.2M
YoY Change -14.0% -21.81%
% of Gross Profit 30.49% 26.93%
Depreciation & Amortization $119.8M $64.20M
YoY Change -11.06% -1.38%
% of Gross Profit 6.07% 3.15%
Operating Expenses $1.094B $1.113B
YoY Change -29.57% -17.99%
Operating Profit $878.7M $926.5M
YoY Change 69.05% 16.69%
Interest Expense -$146.4M $59.90M
YoY Change 29.33% -9.65%
% of Operating Profit -16.66% 6.47%
Other Income/Expense, Net $15.10M $1.700M
YoY Change -1043.75% -100.34%
Pretax Income $603.8M $1.371B
YoY Change 49.09% 371.01%
Income Tax $54.30M $236.2M
% Of Pretax Income 8.99% 17.23%
Net Earnings $550.4M $1.135B
YoY Change 49.48% 244.68%
Net Earnings / Revenue 21.64% 45.23%
Basic Earnings Per Share $7.86
Diluted Earnings Per Share $3.79 $7.84
COMMON SHARES
Basic Shares Outstanding 144.0M shares 145.1M shares
Diluted Shares Outstanding 144.8M shares

Balance Sheet

Concept 2022 Q4 2022 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments $4.893B $4.911B
YoY Change 28.67% 66.19%
Cash & Equivalents $3.419B $3.676B
Short-Term Investments $1.474B $1.236B
Other Short-Term Assets $1.418B $1.496B
YoY Change 91.36% 103.11%
Inventory $1.344B $1.375B
Prepaid Expenses
Receivables $1.705B $1.569B
Other Receivables $0.00 $0.00
Total Short-Term Assets $9.791B $9.766B
YoY Change 24.63% 36.35%
LONG-TERM ASSETS
Property, Plant & Equipment $3.299B $3.266B
YoY Change -3.45% -4.23%
Goodwill $5.749B $5.741B
YoY Change -0.21% -0.34%
Intangibles $1.850B $2.009B
YoY Change -16.71% -12.15%
Long-Term Investments $2.235B $2.473B
YoY Change -21.07% -17.21%
Other Assets $1.529B $1.613B
YoY Change -21.15% -20.11%
Total Long-Term Assets $14.76B $15.09B
YoY Change -7.85% -9.35%
TOTAL ASSETS
Total Short-Term Assets $9.791B $9.766B
Total Long-Term Assets $14.76B $15.09B
Total Assets $24.55B $24.85B
YoY Change 2.83% 4.4%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $491.5M $383.2M
YoY Change -16.58% -10.45%
Accrued Expenses $1.497B $1.377B
YoY Change 1.74% -9.46%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00
YoY Change
Long-Term Debt Due $0.00 $0.00
YoY Change -100.0% -100.0%
Total Short-Term Liabilities $3.273B $3.926B
YoY Change -23.86% -6.77%
LONG-TERM LIABILITIES
Long-Term Debt $6.281B $6.279B
YoY Change 0.11% 0.11%
Other Long-Term Liabilities $944.2M $1.198B
YoY Change -28.5% -9.11%
Total Long-Term Liabilities $944.2M $1.198B
YoY Change -28.5% -9.11%
TOTAL LIABILITIES
Total Short-Term Liabilities $3.273B $3.926B
Total Long-Term Liabilities $944.2M $1.198B
Total Liabilities $11.17B $12.09B
YoY Change -13.56% -6.48%
SHAREHOLDERS EQUITY
Retained Earnings $16.47B $15.92B
YoY Change 18.36% 17.52%
Common Stock $100.0K $100.0K
YoY Change 0.0% 0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost) $2.977B $2.977B
YoY Change 0.0% 0.0%
Treasury Stock Shares 23.80M shares
Shareholders Equity $13.40B $12.78B
YoY Change
Total Liabilities & Shareholders Equity $24.55B $24.85B
YoY Change 2.83% 4.4%

Cashflow Statement

Concept 2022 Q4 2022 Q3
OPERATING ACTIVITIES
Net Income $550.4M $1.135B
YoY Change 49.48% 244.68%
Depreciation, Depletion And Amortization $119.8M $64.20M
YoY Change -11.06% -1.38%
Cash From Operating Activities -$175.0M $661.0M
YoY Change -120.88% -17.92%
INVESTING ACTIVITIES
Capital Expenditures $87.40M -$59.10M
YoY Change -227.59% -4.52%
Acquisitions
YoY Change
Other Investing Activities -$53.70M $1.731B
YoY Change 21.49% -1108.33%
Cash From Investing Activities -$141.1M $1.672B
YoY Change 25.2% -815.84%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities -7.400M -1.252B
YoY Change -175.51% 67.7%
NET CHANGE
Cash From Operating Activities -175.0M 661.0M
Cash From Investing Activities -141.1M 1.672B
Cash From Financing Activities -7.400M -1.252B
Net Change In Cash -323.5M 1.081B
YoY Change -143.99% -718.59%
FREE CASH FLOW
Cash From Operating Activities -$175.0M $661.0M
Capital Expenditures $87.40M -$59.10M
Free Cash Flow -$262.4M $720.1M
YoY Change -128.94% -16.96%

Facts In Submission

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<div style="margin-top:6pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of our condensed consolidated financial statements requires us to make estimates, judgments and assumptions that may affect the reported amounts of assets, liabilities, equity, revenue and expense and related disclosure of contingent assets and liabilities. On an ongoing basis we evaluate our estimates, judgments and assumptions. We base our estimates on historical experience and on various other assumptions that we believe are reasonable, the results of which form the basis for making judgments about the carrying values of assets, liabilities and equity and the amount of revenue and expense. Actual results may differ from these estimates.</span></div><div style="margin-top:6pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The length of time and full extent to which the COVID-19 pandemic directly or indirectly impacts our business, results of operations and financial condition, including sales, expense, reserves and allowances, the supply chain, manufacturing, clinical trials, research and development costs and employee-related costs, depends on future developments that are highly uncertain, subject to change and are difficult to predict, including as a result of new information that may emerge concerning COVID-19 and the actions taken to contain or treat COVID-19 as well as the economic impact on local, regional, national and international customers and markets. Additionally, the ongoing geopolitical tensions related to the conflict in Ukraine, and the related sanctions and other penalties imposed, are creating substantial uncertainty in the global economy. The extent and duration of the conflict, sanctions and resulting market disruptions are highly unpredictable. We have made estimates of the impact of the COVID-19 pandemic and the ongoing geopolitical conflict within our condensed consolidated financial statements and there may be changes to those estimates in future periods.</span></div>
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215000000.0 usd
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7588300000 usd
CY2022Q3 us-gaap Finite Lived Intangible Assets Accumulated Amortization
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5579400000 usd
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2008900000 usd
CY2021Q4 us-gaap Intangible Assets Gross Excluding Goodwill
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CY2021Q4 us-gaap Finite Lived Intangible Assets Accumulated Amortization
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CY2022Q3 biib Amortization And Impairment Of Acquired Intangible Assets
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biib Amortization And Impairment Of Acquired Intangible Assets
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190900000 usd
CY2021Q3 biib Amortization And Impairment Of Acquired Intangible Assets
AmortizationAndImpairmentOfAcquiredIntangibleAssets
111000000 usd
biib Amortization And Impairment Of Acquired Intangible Assets
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190000000.0 usd
CY2022Q3 us-gaap Finite Lived Intangible Assets Amortization Expense Year Four
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175000000.0 usd
CY2022Q3 us-gaap Finite Lived Intangible Assets Amortization Expense Year Five
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CY2021Q4 us-gaap Goodwill
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CY2022Q3 us-gaap Goodwill
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CY2022Q3 us-gaap Goodwill Impaired Accumulated Impairment Loss
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us-gaap Asset Impairment Charges
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3200000 usd
CY2021Q4 biib Equity Securities Available For Sale Accumulated Gross Unrealized Gain Before Tax
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160900000 usd
CY2022Q3 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings
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2100000 usd
CY2021Q3 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings
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15600000 usd
us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings
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13700000 usd
us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings
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49100000 usd
CY2022Q3 us-gaap Business Combination Contingent Consideration Liability Noncurrent
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195400000 usd
CY2021Q4 us-gaap Business Combination Contingent Consideration Liability Noncurrent
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209100000 usd
CY2022Q3 us-gaap Debt Instrument Fair Value
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5296400000 usd
CY2022Q3 us-gaap Notes Payable
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6279200000 usd
CY2021Q4 us-gaap Debt Instrument Fair Value
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8004700000 usd
CY2021Q4 us-gaap Notes Payable
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CY2021Q4 us-gaap Available For Sale Securities Debt Securities
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2433100000 usd
CY2021Q4 us-gaap Equity Securities Fv Ni Cost
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1167000000 usd
CY2022Q3 us-gaap Cash Equivalents At Carrying Value
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3191800000 usd
CY2021Q4 us-gaap Cash Equivalents At Carrying Value
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1632200000 usd
CY2022Q3 us-gaap Available For Sale Debt Securities Amortized Cost Basis
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2122700000 usd
CY2022Q3 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
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100000 usd
CY2022Q3 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
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27000000.0 usd
CY2022Q3 us-gaap Available For Sale Securities Debt Securities
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CY2022Q3 us-gaap Equity Securities Fv Ni Cost
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CY2022Q3 biib Equity Securities Available For Sale Accumulated Gross Unrealized Gain Before Tax
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CY2022Q3 biib Equity Securities Available For Sale Accumulated Gross Unrealized Loss Before Tax
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237800000 usd
CY2022Q3 us-gaap Equity Securities Fv Ni
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896000000.0 usd
CY2021Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
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2435900000 usd
CY2021Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
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400000 usd
CY2021Q4 biib Equity Securities Available For Sale Accumulated Gross Unrealized Loss Before Tax
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CY2021Q4 us-gaap Equity Securities Fv Ni
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CY2022Q3 us-gaap Available For Sale Securities Debt Maturities Within One Year Amortized Cost
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CY2022Q3 us-gaap Available For Sale Securities Debt Maturities Within One Year Fair Value
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CY2021Q4 us-gaap Available For Sale Securities Debt Maturities Within One Year Amortized Cost
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1541100000 usd
CY2021Q4 us-gaap Available For Sale Securities Debt Maturities Within One Year Fair Value
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CY2022Q3 us-gaap Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost
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848300000 usd
CY2022Q3 us-gaap Available For Sale Securities Debt Maturities After One Through Five Years Fair Value
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864000000.0 usd
CY2021Q4 us-gaap Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost
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868200000 usd
CY2021Q4 us-gaap Available For Sale Securities Debt Maturities After One Through Five Years Fair Value
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CY2022Q3 biib Available For Sale Securities Debt Maturities After Five Years Amortized Cost
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12000000.0 usd
CY2022Q3 biib Available For Sale Securities Debt Maturities After Five Years Fair Value
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12900000 usd
CY2021Q4 biib Available For Sale Securities Debt Maturities After Five Years Amortized Cost
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23800000 usd
CY2021Q4 biib Available For Sale Securities Debt Maturities After Five Years Fair Value
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CY2022Q3 us-gaap Available For Sale Securities Debt Securities
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CY2022Q3 us-gaap Available For Sale Debt Securities Amortized Cost Basis
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2122700000 usd
CY2021Q4 us-gaap Available For Sale Securities Debt Securities
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CY2021Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
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CY2022Q1 biib Average Maturity Of Marketable Securities
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CY2022Q3 us-gaap Proceeds From Sale And Maturity Of Available For Sale Securities
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1643200000 usd
CY2021Q3 us-gaap Proceeds From Sale And Maturity Of Available For Sale Securities
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us-gaap Proceeds From Sale And Maturity Of Available For Sale Securities
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3104700000 usd
us-gaap Proceeds From Sale And Maturity Of Available For Sale Securities
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2028100000 usd
CY2022Q3 us-gaap Debt Securities Available For Sale Realized Gain
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CY2021Q3 us-gaap Debt Securities Available For Sale Realized Gain
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100000 usd
us-gaap Debt Securities Available For Sale Realized Gain
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us-gaap Debt Securities Available For Sale Realized Gain
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CY2022Q3 us-gaap Debt Securities Available For Sale Realized Loss
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CY2021Q3 us-gaap Debt Securities Available For Sale Realized Loss
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us-gaap Debt Securities Available For Sale Realized Loss
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CY2021Q3 us-gaap Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments
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CY2022Q3 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
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2098000000 usd
CY2021Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
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2006600000 usd
CY2022Q3 us-gaap Depreciation
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us-gaap Depreciation
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CY2021Q3 us-gaap Depreciation
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65100000 usd
us-gaap Depreciation
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CY2022Q3 biib Operating Lease Right Of Use Asset Derecognized
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CY2022Q3 biib Operating Lease Liability Derecognized
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CY2022Q3 biib Gain Loss On Restructuring Charges
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CY2015Q3 us-gaap Debt Instrument Face Amount
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CY2022Q3 us-gaap Debt Instrument Interest Rate Stated Percentage
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CY2022Q3 biib Debt Instrument Redemption Rate
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CY2022Q3 us-gaap Debt Instrument Interest Rate Stated Percentage
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CY2022Q3 us-gaap Debt Instrument Interest Rate Stated Percentage
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CY2022Q3 us-gaap Debt Instrument Interest Rate Stated Percentage
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CY2022Q3 us-gaap Debt Instrument Interest Rate Stated Percentage
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CY2022Q3 us-gaap Extinguishment Of Debt Amount
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CY2021Q1 us-gaap Repayments Of Senior Debt
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CY2022Q3 biib Investment In Biotechnology Companies That Are Determined To Be Unconsolidated Variable Interest Entities
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CY2021Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
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us-gaap Other Comprehensive Income Loss Before Reclassifications Net Of Tax
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us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
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CY2022Q3 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
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us-gaap Other Comprehensive Income Loss Before Reclassifications Net Of Tax
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us-gaap Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax
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us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
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162400000 usd
CY2021Q3 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
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CY2022Q3 us-gaap Net Income Loss
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CY2021Q3 us-gaap Net Income Loss
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329200000 usd
us-gaap Net Income Loss
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2496500000 usd
us-gaap Net Income Loss
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CY2022Q3 us-gaap Weighted Average Number Of Shares Outstanding Basic
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144400000 shares
CY2021Q3 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
148000000.0 shares
us-gaap Weighted Average Number Of Shares Outstanding Basic
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145800000 shares
us-gaap Weighted Average Number Of Shares Outstanding Basic
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CY2022Q3 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
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400000 shares
CY2021Q3 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
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600000 shares
us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
400000 shares
us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
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400000 shares
CY2022Q3 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
144800000 shares
CY2021Q3 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
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us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
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us-gaap Weighted Average Number Of Diluted Shares Outstanding
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CY2022Q3 us-gaap Allocated Share Based Compensation Expense Net Of Tax
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CY2021Q3 us-gaap Allocated Share Based Compensation Expense Net Of Tax
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us-gaap Allocated Share Based Compensation Expense Net Of Tax
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us-gaap Allocated Share Based Compensation Expense Net Of Tax
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CY2022Q3 us-gaap Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
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CY2021Q3 us-gaap Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
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1900000 usd
us-gaap Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
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us-gaap Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
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6300000 usd
CY2022Q3 biib Share Based Compensation Expense Included In Costs And Expenses
ShareBasedCompensationExpenseIncludedInCostsAndExpenses
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CY2021Q3 biib Share Based Compensation Expense Included In Costs And Expenses
ShareBasedCompensationExpenseIncludedInCostsAndExpenses
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biib Share Based Compensation Expense Included In Costs And Expenses
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biib Share Based Compensation Expense Included In Costs And Expenses
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CY2022Q3 us-gaap Employee Service Share Based Compensation Tax Benefit From Compensation Expense
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CY2021Q3 us-gaap Employee Service Share Based Compensation Tax Benefit From Compensation Expense
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10900000 usd
us-gaap Employee Service Share Based Compensation Tax Benefit From Compensation Expense
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36000000.0 usd
us-gaap Employee Service Share Based Compensation Tax Benefit From Compensation Expense
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35800000 usd
CY2022Q3 us-gaap Allocated Share Based Compensation Expense Net Of Tax
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CY2021Q3 us-gaap Allocated Share Based Compensation Expense Net Of Tax
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us-gaap Allocated Share Based Compensation Expense Net Of Tax
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us-gaap Allocated Share Based Compensation Expense Net Of Tax
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200000000.0 usd
CY2022Q3 us-gaap Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
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CY2021Q3 us-gaap Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
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1900000 usd
us-gaap Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
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us-gaap Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
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6300000 usd
CY2022Q3 biib Share Based Compensation Expense Included In Costs And Expenses
ShareBasedCompensationExpenseIncludedInCostsAndExpenses
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CY2021Q3 biib Share Based Compensation Expense Included In Costs And Expenses
ShareBasedCompensationExpenseIncludedInCostsAndExpenses
60200000 usd
biib Share Based Compensation Expense Included In Costs And Expenses
ShareBasedCompensationExpenseIncludedInCostsAndExpenses
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biib Share Based Compensation Expense Included In Costs And Expenses
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CY2022Q3 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
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CY2021Q3 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
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0.210
us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
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0.210
us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
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0.210
CY2022Q3 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
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CY2021Q3 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
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us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
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us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
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CY2022Q3 us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
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CY2021Q3 us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
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us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
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us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
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CY2022Q3 us-gaap Effective Income Tax Rate Reconciliation Tax Credits
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CY2021Q3 us-gaap Effective Income Tax Rate Reconciliation Tax Credits
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CY2022Q3 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation And Amortization
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CY2022Q3 biib Effective Tax Rate Reconciliation Gilt Itax
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CY2021Q3 biib Effective Tax Rate Reconciliation Gilt Itax
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biib Effective Tax Rate Reconciliation Gilt Itax
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biib Effective Tax Rate Reconciliation Gilt Itax
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CY2022Q3 biib Effective Tax Rate Reconciliation Sale Of Samsung Bioepis
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CY2021Q3 biib Effective Tax Rate Reconciliation Sale Of Samsung Bioepis
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biib Effective Tax Rate Reconciliation Sale Of Samsung Bioepis
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biib Effective Tax Rate Reconciliation Sale Of Samsung Bioepis
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CY2022Q3 biib Effective Tax Rate Reconciliation Litigation Agreement
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CY2021Q3 biib Effective Tax Rate Reconciliation Litigation Agreement
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biib Effective Tax Rate Reconciliation Litigation Agreement
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biib Effective Tax Rate Reconciliation Litigation Agreement
EffectiveTaxRateReconciliationLitigationAgreement
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CY2022Q3 biib Effective Tax Rate Reconciliation Nuer Immune Tax Impacts
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CY2021Q3 biib Effective Tax Rate Reconciliation Nuer Immune Tax Impacts
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biib Effective Tax Rate Reconciliation Nuer Immune Tax Impacts
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biib Effective Tax Rate Reconciliation Nuer Immune Tax Impacts
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CY2022Q3 biib Effective Tax Rate Reconciliation International Reorganization
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0
CY2021Q3 biib Effective Tax Rate Reconciliation International Reorganization
EffectiveTaxRateReconciliationInternationalReorganization
0
biib Effective Tax Rate Reconciliation International Reorganization
EffectiveTaxRateReconciliationInternationalReorganization
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biib Effective Tax Rate Reconciliation International Reorganization
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us-gaap Equity Method Investment Realized Gain Loss On Disposal
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us-gaap Litigation Settlement Expense
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us-gaap Interest Expense
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us-gaap Interest Expense
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CY2022Q3 us-gaap Realized Investment Gains Losses
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us-gaap Realized Investment Gains Losses
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us-gaap Realized Investment Gains Losses
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CY2022Q3 us-gaap Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
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CY2021Q3 us-gaap Foreign Currency Transaction Gain Loss Before Tax
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us-gaap Foreign Currency Transaction Gain Loss Before Tax
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us-gaap Foreign Currency Transaction Gain Loss Before Tax
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CY2022Q3 us-gaap Other Nonoperating Income Expense
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us-gaap Other Nonoperating Income Expense
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CY2022Q2 us-gaap Litigation Settlement Expense
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CY2022Q3 us-gaap Settlement Liabilities Current
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CY2021Q4 us-gaap Settlement Liabilities Current
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CY2022Q3 biib Collaborationexpensesaccrual
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CY2022Q3 us-gaap Equity Securities Fv Ni Gain Loss
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CY2021Q3 us-gaap Equity Securities Fv Ni Gain Loss
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us-gaap Equity Securities Fv Ni Gain Loss
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CY2021Q4 biib Collaborationexpensesaccrual
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CY2021Q4 us-gaap Deferred Tax Assets Valuation Allowance
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biib Percentageoffuturedevelopmentcostsrelatedto Eisai
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biib Percentageoffuturedevelopmentcostsrelatedto Eisai
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biib Percentageoffuturedevelopmentcostsrelatedto Eisai
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biib Percentageoffuturedevelopmentcostsrelatedto Eisai
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CY2021Q4 us-gaap Deferred Tax Assets Liabilities Net
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CY2021Q4 us-gaap Deferred Tax Assets Liabilities Net
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CY2021Q4 biib Investment In Biotechnology Companies That Are Determined To Be Unconsolidated Variable Interest Entities
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CY2020Q4 us-gaap Loss Contingency Estimate Of Possible Loss
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200000000 usd
us-gaap Proceeds From Sale Of Equity Method Investments
ProceedsFromSaleOfEquityMethodInvestments
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us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
582600000 usd

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