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v3.23.1

Noncontrolling Interests - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Noncontrolling Interest [Abstract] |  |
Adjustments of carrying value of noncontrolling interest additional paid-in capital | $ (2.8) | $ (0.3)

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- Definition Adjustments of carrying value of noncontrolling interest additional paid-in capital. + References No definition available. + Details
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Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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