Earnings Per Share ("EPS") (Earnings Per Share Basic And Diluted) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Apr. 30, 2012	Apr. 30, 2011
Earnings Per Share ("EPS") [Abstract]
Net income per common share attributable to shareholders of Tech Data-basic	$ 51,692	$ 48,701
Net income per common shares attributable to shareholders of Tech Data-diluted	$ 51,692	$ 48,701
Weighted average shares, basic	41,154	46,673
Effect of dilutive securities: Equity-based awards, Weighted average shares	445	716
Weighted average shares, diluted	41,599	47,389
Net income per common share attributable to shareholders of Tech Data-basic, Per share amount	$ 1.26	$ 1.04
Net income per common shares attributable to shareholders of Tech Data-diluted, Per share amount	$ 1.24	$ 1.03

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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-Glossary Weighted-Average Number of Common Shares Outstanding

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