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Accumulated Other Comprehensive (Loss) Income (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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| Disclosure - Accumulated Other Comprehensive Income (Loss), Net of Taxes [Abstract] | ||||||||
| Net gain on derivative instruments | $ 3.5 | $ 2.8 | $ 9.2 | |||||
| Net unrealized gain on available-for-sale securities | 1.8 | [1] | 2.9 | [1] | 1.4 | [1] | ||
| Defined benefit pension items | (7.7) | [1] | (13.1) | [1] | (7.8) | [1] | ||
| Foreign currency translation adjustments | 1.8 | [1] | 1.7 | [1] | 3.1 | [1] | ||
| Accumulated other comprehensive (loss) | (0.6) | (5.7) | 5.9 | |||||
| Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | $ 12.9 | |||||||
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