Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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-Name Emerging Issues Task Force (EITF)

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-Paragraph 4

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752

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-Name Accounting Standards Codification

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-Name Accounting Standards Codification

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+ Details

Earnings Per Share (Details Textual)	12 Months Ended
Earnings Per Share (Details Textual)	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Dilutive Options Restricted Stock and Convertible Securities [Member]
Earnings Per Share (Textual) [Abstract]
Shares excluded from computation of earnings per share because effect is anti-dilutive under treasury stock method	49,642,605	45,856,959
Preferred stock and 2016 Senior Notes [Member]
Earnings Per Share (Textual) [Abstract]
Shares excluded from computation of earnings per share because effect is anti-dilutive under treasury stock method			27,471,380
Weighted-average options, restricted stock and performance shares [Member]
Earnings Per Share (Textual) [Abstract]
Shares excluded from computation of earnings per share because effect is anti-dilutive under treasury stock method	4,105,670	4,222,955	4,447,652