Earnings Per Share ("EPS") - Earnings Per Share Basic and Diluted (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011
Net income per common share attributable to shareholders of Tech Data Corporation-basic, Net income attributable to Tech Data Corporation	$ 45,898	$ 53,519	$ 132,048	$ 152,327
Net income per common share attributable to shareholders of Tech Data Corporation-diluted, Net income attributable to Tech Data Corporation	$ 45,898	$ 53,519	$ 132,048	$ 152,327
Net income per common share attributable to shareholders of Tech Data Corporation-basic, Weighted average shares	37,765	42,104	39,234	44,602
Effect of dilutive securities: Equity-based awards, Weighted average shares	260	450	312	555
Net income per common share attributable to shareholders of Tech Data Corporation-diluted, Weighted average shares	38,025	42,554	39,546	45,157
Net income per common share attributable to shareholders of Tech Data Corporation-basic, Per share amount	$ 1.22	$ 1.27	$ 3.37	$ 3.42
Net income per common share attributable to shareholders of Tech Data Corporation-diluted, Per share amount	$ 1.21	$ 1.26	$ 3.34	$ 3.37