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Significant Accounting Policies (Concentration of Risk) (Details)	12 Months Ended
	Dec. 30, 2017
Non-Swiss watch assembly | Production | Production concentration
Concentration of Risk
Concentration risk percentage	55.00%
Jewelry production | Production | Production concentration
Concentration of Risk
Concentration risk percentage	63.00%
Licensed products | Sales of licensed products | Licensed products
Concentration of Risk
Concentration risk percentage	47.00%
MICHAEL KORS | Sales of licensed products | Licensed products
Concentration of Risk
Concentration risk percentage	22.60%

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
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