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Major Customer, Segment And Geographic Information (Schedule Of Revenue For Each Class Of Similar Products) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Segment Reporting Information [Line Items]
Total	$ 830,756	$ 642,910	$ 556,661	$ 536,975	$ 701,076	$ 523,825	$ 412,560	$ 393,229	$ 2,567,302	$ 2,030,690	$ 1,548,093
Watches [Member]
Segment Reporting Information [Line Items]
Total									1,843,909	1,419,205	1,021,181
Leathers [Member]
Segment Reporting Information [Line Items]
Total									427,771	340,405	297,591
Jewelry [Member]
Segment Reporting Information [Line Items]
Total									190,126	166,183	133,949
Other [Member]
Segment Reporting Information [Line Items]
Total									$ 105,496	$ 104,897	$ 95,372
Sales Revenue, Product Line [Member]
Segment Reporting Information [Line Items]
Percentage of Total	100.00%				100.00%				100.00%	100.00%	100.00%
Sales Revenue, Product Line [Member] | Watches [Member]
Segment Reporting Information [Line Items]
Percentage of Total	71.80%				69.90%				71.80%	69.90%	66.00%
Sales Revenue, Product Line [Member] | Leathers [Member]
Segment Reporting Information [Line Items]
Percentage of Total	16.70%				16.80%				16.70%	16.80%	19.20%
Sales Revenue, Product Line [Member] | Jewelry [Member]
Segment Reporting Information [Line Items]
Percentage of Total	7.40%				8.20%				7.40%	8.20%	8.70%
Sales Revenue, Product Line [Member] | Other [Member]
Segment Reporting Information [Line Items]
Percentage of Total	4.10%				5.10%				4.10%	5.10%	6.10%

X

- Definition

Percentage Of Product Revenue To Total Sales Revenue

+ References

No definition available.

+ Details

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Namespace Prefix:	fosl_
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X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

X

- Details

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