XML 58 R45.htm IDEA: XBRL DOCUMENT v3.21.2

Fair Value of Financial Instruments - Schedule of Calculation of Estimated Fair Value of Contingent Consideration Liabilities (Details) - Contingent Consideration Liabilities	6 Months Ended
	Jun. 30, 2021
Technology Milestones | Minimum
Derivative Liability [Abstract]
Milestone liabilities projected year of payment	2021
Technology Milestones | Maximum
Derivative Liability [Abstract]
Milestone liabilities projected year of payment	2022
Product Milestones | Minimum
Derivative Liability [Abstract]
Milestone liabilities projected year of payment	2023
Product Milestones | Maximum
Derivative Liability [Abstract]
Milestone liabilities projected year of payment	2028
Measurement Input, Discount Rate | Technology Milestones
Derivative Liability [Abstract]
Contingent consideration liability measurement input	7.50
Measurement Input, Discount Rate | Product Milestones
Derivative Liability [Abstract]
Contingent consideration liability measurement input	7.50
Probability of Payment | Technology Milestones | Minimum
Derivative Liability [Abstract]
Contingent consideration liability measurement input	10
Probability of Payment | Technology Milestones | Maximum
Derivative Liability [Abstract]
Contingent consideration liability measurement input	60
Probability of Payment | Product Milestones | Minimum
Derivative Liability [Abstract]
Contingent consideration liability measurement input	2
Probability of Payment | Product Milestones | Maximum
Derivative Liability [Abstract]
Contingent consideration liability measurement input	15

X

- Definition

The year in which payment is expected to be made for contingent consideration as part of a business combination.

+ References

No definition available.

+ Details

Name:	beam_BusinessCombinationContingentConsiderationLiabilityExpectedPaymentYear
Namespace Prefix:	beam_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Value of input used to measure contingent consideration liability from business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_DerivativeLiabilitiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ContingentConsiderationByTypeAxis=beam_ContingentConsiderationOfTechnologyLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByLiabilityClassAxis=beam_ContingentConsiderationLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ContingentConsiderationByTypeAxis=beam_ContingentConsiderationOfProductLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=beam_MeasurementInputProbabilityOfPaymentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: