XML 19 R7.htm IDEA: XBRL DOCUMENT
v3.22.2

Condensed Consolidated Statements of Redeemable Convertible Noncontrolling Interests and Stockholders' Equity (Unaudited) (Parenthetical) $ in Thousands | Mar. 31, 2021 USD ($)
--- | ---
Statement of Stockholders' Equity [Abstract] |
Repurchase of Eidos noncontrolling interests for cash and shares, transaction costs | $ 70,734

X
- Definition Repurchase of noncontrolling interests transaction costs. + References No definition available. + Details
Name: | bbio_RepurchaseOfNoncontrollingInterestsTransactionCosts
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration