|
Stockholders' Equity (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Jan. 31, 2014
|
Jan. 31, 2013
|
Jan. 31, 2012
|
|
| Stockholders Equity Note [Line Items] | |||
| Preferred stock, shares authorized | 2.0 | 2.0 | |
|
Common Stock Repurchase Program
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| Stockholders Equity Note [Line Items] | |||
| Repurchase and retirement of common shares (in shares) | 10.5 | 12.5 | 9.7 |
| Repurchased shares of its common stock on the open market, average repurchase price per share | $ 40.43 | $ 34.50 | $ 33.71 |
| Common Stock shares remained available for repurchase under repurchase plans | 21.8 | ||