XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.25.2

Fair Value Measurements - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025 | Feb. 28, 2025 | Dec. 31, 2024 | Jan. 28, 2021 | Mar. 09, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair value assets, transfers between Level 1, Level 2 or Level 3 | $ 0 | $ 0 |  | $ 0 |  |
Fair value liabilities, transfers between Level 1, Level 2 or Level 3 | 0 | 0 |  | 0 |  |
Estimated fair value of deferred royalty obligation under funding agreement, net embedded derivative liability | 466,300,000 | 466,300,000 |  | 446,000,000 |  |
Other Income (Expense), Net |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |
Gain for change in fair value of embedded derivative liability | $ 1,500,000 | $ 5,500,000 |  |  |  |
Financing Agreement |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |
Estimated fair value of outstanding term loan |  |  |  | $ 461,800,000 |  |
2029 Notes |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |
Stated interest rate | 2.25% | 2.25% |  |  | 2.25% |
2027 Notes |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |
Stated interest rate | 2.50% | 2.50% |  |  |  | 2.50%
2031 Notes |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |
Stated interest rate | 1.75% | 1.75% | 1.75% |  |  |

X
- Definition Deferred royalty obligation under funding agreement net of embedded derivative liability, fair value disclosure. + References No definition available. + Details
Name: | bbio_DeferredRoyaltyObligationUnderFundingAgreementNetOfEmbeddedDerivativeLiabilityFairValueDisclosure
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Estimated fair value of outstanding term loan. + References No definition available. + Details
Name: | bbio_EstimatedFairValueOfOutstandingTermLoan
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value assets transfers between level one level two or level three amount. + References No definition available. + Details
Name: | bbio_FairValueAssetsTransfersBetweenLevelOneLevelTwoOrLevelThreeAmount
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value liabilities transfers between level one level two or level three amount. + References No definition available. + Details
Name: | bbio_FairValueLiabilitiesTransfersBetweenLevelOneLevelTwoOrLevelThreeAmount
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Gain (loss) on change in fair value of embedded derivative liability. + References No definition available. + Details
Name: | bbio_GainLossOnChangeInFairValueOfEmbeddedDerivativeLiability
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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 Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_NonoperatingIncomeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=bbio_FinancingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bbio_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandAndTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bbio_TwoPointFiveZeroPercentageConvertibleSeniorNotesDueTwoThousandAndTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bbio_OnePointSevenFivePercentageConvertibleSeniorNotesDueTwoThousandAndThirtyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |