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Goodwill and Intangible Assets - Schedule of Intangible Assets (Parenthetical) (Details) - Trademarks	Dec. 28, 2024	Sep. 28, 2024
Estimated Useful Life	10 years
Dogfish Head
Estimated Useful Life	10 years	10 years

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=sam_DogfishHeadMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: