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v3.25.2

Segment Information (Schedule of Segment Reporting - Capital Expenditures) (Details) - USD ($) $ in Millions | 12 Months Ended
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Aug. 03, 2025 | Jul. 28, 2024 | Jul. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |
Segment, Expenditure, Addition to PP&E |  | $ 426 | $ 517 | $ 370
Meals & Beverages [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment, Expenditure, Addition to PP&E |  | 195 | 147 | 129
Snacks [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment, Expenditure, Addition to PP&E |  | 148 | 279 | 199
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment, Expenditure, Addition to PP&E | [1] | $ 83 | $ 91 | $ 42
[1] | Represents primarily corporate offices and enterprise-wide information technology systems.

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- Definition Amount of expenditure for addition to long-lived assets. Excludes expenditure for addition to financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax assets. + References No definition available. + Details
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Namespace Prefix: | cpb_
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Balance Type: | debit
Period Type: | duration

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

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

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

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