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DERIVATIVES AND RISK MANAGEMENT - Cash Flow Hedges (Details)	9 Months Ended
	Sep. 28, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Foreign currency cash flow hedge maximum length of projection term	24 months
Forecasted purchases to manage fluctuations (as a percent) (up to)	85.00%

X

- Definition

Maximum percentage of cash flow hedge coverage as defined by policy.

+ References

No definition available.

+ Details

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Namespace Prefix:	fosl_
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Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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X

- Definition

Maximum period of hedging exposure to variability in future cash flows for forecasted transaction of foreign currency cash flow hedge, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transaction for payment of variable interest on existing financial instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-SubTopic 30
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480870/815-30-50-1

+ Details

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