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Debt Senior Notes (Details) (Senior Notes [Member], USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | 12 Months Ended | 36 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|
|
Jul. 30, 2011
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Apr. 30, 2011
|
Jul. 31, 2010
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Feb. 29, 2016
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Feb. 28, 2015
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Jan. 28, 2012
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Mar. 01, 2013
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Feb. 02, 2013
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Mar. 05, 2010
|
|
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Senior Notes [Member]
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| Debt Instrument [Line Items] | |||||||||
| Debt Instrument, Face Amount | $ 250.0 | ||||||||
| Senior Notes Original Offering Price | 98.60% | ||||||||
| Early Repayment of Senior Debt | 24.2 | 25.0 | |||||||
| Redemption Price, Senior Debt | 109.21% | 108.75% | 102.188% | 104.375% | 108.75% | ||||
| Gains (Losses) on Extinguishment of Debt | 6.9 | ||||||||
| Write off of Debt Issuance Costs and Unamortized Debt Discount | 2.5 | ||||||||
| Long-term Debt, Fair Value | $ 217.9 | ||||||||