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EMPLOYEE BENEFITS (Details) - USD ($) $ in Millions | Dec. 27, 2025 | Dec. 28, 2024
--- | --- | ---
EMPLOYEE BENEFITS |  |
Severance pay liability | $ 78 | $ 62
Severance pay funds included in other long-term assets | $ 69 | $ 52
Monthly deposits (in percent) | 8.33% |

X
- Definition Amount of severance pay funds included in other long-term assets. + References No definition available. + Details
Name: | mbly_SeverancePayFundsIncludedInOtherLongTermAssets
Namespace Prefix: | mbly_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of severance pay. + References No definition available. + Details
Name: | mbly_SupplementalUnemploymentBenefitsSeveranceBenefitsPercentage
Namespace Prefix: | mbly_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment. + References No definition available. + Details
Name: | us-gaap_SupplementalUnemploymentBenefitsSeveranceBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant