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Business and Summary of Significant Accounting Policies - Advertising Expense (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Jan. 31, 2014
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Jan. 31, 2013
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Jan. 31, 2012
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| Business and Summary of Significant Accounting Policies [Abstract] | |||
| Advertising Expense | $ 15.6 | $ 15.6 | $ 21.3 |