XML 80 R67.htm IDEA: XBRL DOCUMENT
v3.26.1

Fair Value Measurements - Schedule of Measured at Fair Value (Details) | Dec. 28, 2025 | Dec. 29, 2024
--- | --- | ---
VWAP stock price [Member] | Forward purchase agreement liabilities [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 1.66 | 1.78
Simulation period [Member] | Forward purchase agreement liabilities [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 0.55 | 0.55
Risk-free rate [Member] | Forward purchase agreement liabilities [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 3.57 | 4.28
Risk-free rate [Member] | Private Placement and Working Capital Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 3.5 | 4.39
Expected volatility [Member] | Forward purchase agreement liabilities [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 77.3 | 117
Expected volatility [Member] | Private Placement and Working Capital Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 179 | 68.1
Expected term [Member] | Private Placement and Working Capital Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 2.56 | 3.56
Stock price [Member] | Private Placement and Working Capital Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 1.62 | 1.81
Exercise price [Member] | Private Placement and Working Capital Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 11.5 | 11.5
Expected dividend yield [Member] | Private Placement and Working Capital Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative liability, measurement inputs | 0 | 0

X
- Definition Value of input used to measure derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_DerivativeLiabilityMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- 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 Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-8 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 43 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479303/805-10-55-43 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=spwr_MeasurementInputVWAPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=spwr_ForwardPurchaseAgreementLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=spwr_MeasurementInputSimulationPeriodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=spwr_PrivatePlacementAndWorkingCapitalWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputSharePriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExercisePriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedDividendRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |