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v3.25.4

Nature of Operations - Fiscal Year (Details) | 12 Months Ended
--- | ---
Jan. 03, 2026 | Dec. 28, 2024 | Dec. 30, 2023
Fiscal Year |  |  |
Number of weeks in each fiscal quarter | 91 days | 91 days | 91 days
Number of weeks in fiscal period | 364 days | 364 days | 364 days
Number of weeks in fourth quarter of fiscal year having fifty three weeks | 98 days |  |
Minimum |  |  |
Fiscal Year |  |  |
Number of years between 53 week fiscal years | 5 years |  |
Maximum |  |  |
Fiscal Year |  |  |
Number of years between 53 week fiscal years | 6 years |  |

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

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- Definition Represents the frequency of a fiscal year containing 53 weeks rather than the regular 52 week fiscal year. + References No definition available. + Details
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Namespace Prefix: | bgs_
Data Type: | xbrli:durationItemType
Balance Type: | na
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- Definition Disclosure of the number of weeks included in the financial results of each fiscal year quarter. + References No definition available. + Details
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Namespace Prefix: | bgs_
Data Type: | xbrli:durationItemType
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Period Type: | duration

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- Definition Disclosure of the number of weeks included in the financial results of fourth fiscal quarter of fiscal year having 53 week. + References No definition available. + Details
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Namespace Prefix: | bgs_
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- Definition Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Details
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Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |