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Net Income Per Common Share (Tables)

9 Months Ended

Oct. 31, 2011

Net Income Per Common Share [Abstract]

Reconciliation Of Weighted Average Shares Outstanding Used For Computation Of Basic And Diluted Net Income Per Common Share

		Three Months Ended October 31,								Nine Months Ended October 31,
		2011				2010				2011				2010
Basic weighted average shares outstanding			151,170,175				165,699,540				157,313,818				167,808,729
Effect of dilutive options, restricted stock and performance shares			2,264,636				2,876,097				2,437,675				3,420,154
Diluted weighted average shares outstanding			153,434,811				168,575,637				159,751,493				171,228,883

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- Definition

Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Topic 260

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph

-Name Accounting Standards Codification

-Paragraph 1

-Section 50

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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