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Acquisitions and Goodwill (Details 4) (Fossil Spain, General De Relojeria, S.A) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended
	Aug. 10, 2012	Dec. 29, 2012 USD ($)	Dec. 29, 2012 Minimum USD ($)	Dec. 29, 2012 Minimum EUR (€)	Dec. 29, 2012 Maximum USD ($)	Dec. 29, 2012 Maximum EUR (€)
Business Acquisition
Voting interest that may be acquired upon expiration of joint venture agreement (as a percent)	50.00%
Percentage or net book value used in the calculation of the fixed purchase price component		50.00%
Net book value of acquirer		$ 15.9
Variable price			$ 2.6	€ 2.0	$ 4.6	€ 3.5

X

- Definition

Represents the net book value of the acquirer.

+ References

No definition available.

+ Details

Name:	fosl_BusinessAcquisitionNetBookValueOfAcquirer
Namespace Prefix:	fosl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the variable component of the purchase price per year.

+ References

No definition available.

+ Details

Name:	fosl_BusinessAcquisitionVariablePurchasePrice
Namespace Prefix:	fosl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the percentage of net book value used in the calculation of the fixed purchase price component.

+ References

No definition available.

+ Details

Name:	fosl_PercentageOfNetBookValueOfFixedPurchasePrice
Namespace Prefix:	fosl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the voting interest that may be acquired upon expiration of the joint venture agreement.

+ References

No definition available.

+ Details

Name:	fosl_VotingInterestThatMayBeAcquiredUponExpirationOfJointVentureAgreement
Namespace Prefix:	fosl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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