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INCOME TAXES - Uncertain tax positions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2025	Dec. 28, 2024	Dec. 30, 2023
Reconciliation of the beginning and ending amount of unrecognized tax benefits related to uncertain tax positions
Balance at the beginning of the year	$ 13	$ 7
Changes in balances related to tax positions taken during current period	7	6	$ 7
Foreign currency adjustments	2
Balance at the end of the year	$ 22	$ 13	$ 7

X

- Definition

Amount of uncertain tax positions.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

+ References

No definition available.

+ Details

Name:	mbly_UncertainTaxPositionsDecreaseIncreaseInTaxPosition
Namespace Prefix:	mbly_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of increase in unrecognized tax benefits resulting from foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15A

+ Details

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