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Shareholders' Equity (Narrative) (Details) (December 2014 Program [Member], USD $)
In Millions, unless otherwise specified
Jan. 31, 2015
December 2014 Program [Member]
  
Equity, Class of Treasury Stock [Line Items]  
Share repurchase authorized amount $ 100.0us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_ShareRepurchaseProgramAxis
= tecd_December2014ProgramMember