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Commitments and Contingencies - Summary of Non-cancelable Contractual Obligations (Detail) $ in Thousands	Dec. 28, 2024 USD ($)
Long-term Purchase Commitment [Line Items]
Contractual obligations payment due, total	$ 225,077
Contractual obligations payment due, 2025	202,822
Contractual obligations payment due, 2026	14,771
Contractual obligations payment due, 2027	5,698
Contractual obligations payment due, Thereafter	1,786
Equipment and machinery
Long-term Purchase Commitment [Line Items]
Contractual obligations payment due, total	34,240
Contractual obligations payment due, 2025	31,665
Contractual obligations payment due, 2026	1,934
Contractual obligations payment due, 2027	641
Brand Support
Long-term Purchase Commitment [Line Items]
Contractual obligations payment due, total	68,602
Contractual obligations payment due, 2025	63,618
Contractual obligations payment due, 2026	4,559
Contractual obligations payment due, 2027	425
Ingredients and Packaging (excluding hops and malt)
Long-term Purchase Commitment [Line Items]
Contractual obligations payment due, total	56,044
Contractual obligations payment due, 2025	56,044
Hops and Malt
Long-term Purchase Commitment [Line Items]
Contractual obligations payment due, total	38,264
Contractual obligations payment due, 2025	33,080
Contractual obligations payment due, 2026	2,005
Contractual obligations payment due, 2027	1,462
Contractual obligations payment due, Thereafter	1,717
Other
Long-term Purchase Commitment [Line Items]
Contractual obligations payment due, total	27,927
Contractual obligations payment due, 2025	18,415
Contractual obligations payment due, 2026	6,273
Contractual obligations payment due, 2027	3,170
Contractual obligations payment due, Thereafter	$ 69

X

- Definition

Contractual Obligation, to be Paid, after Year Three.

+ References

No definition available.

+ Details

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Namespace Prefix:	sam_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

+ Details

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X

- Definition

Amount of contractual obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

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- Definition

Amount of contractual obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

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- Definition

Amount of contractual obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

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- 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

No definition available.

+ Details

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