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Commitments and Contingencies Commitments and Contingencies - Watches sold as a percentage of net sales (Details)
12 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Jan. 31, 2011
Commitments and Contingencies Watches Disclosure [Abstract]      
Branded Watch Sales As Percentage Of Net Sales 1.00% 1.00% 1.00%