Business And Summary Of Significant Accounting Policies (Policy)	9 Months Ended
	Oct. 31, 2017
Accounting Policies [Abstract]
Nature of Operations	Tech Data Corporation (“Tech Data” or the “Company”) is one of the world’s largest wholesale distributors of technology products. The Company serves as an indispensable link in the technology supply chain by bringing products from the world’s leading technology vendors to market, as well as providing customers with advanced logistics capabilities and value-added services. Tech Data’s customers include value-added resellers, direct marketers, retailers and corporate resellers who support the diverse technology needs of end users. On February 27, 2017, the Company purchased all of the outstanding shares of Avnet, Inc.'s ("Avnet") Technology Solutions ("TS") business (see Note 3 - Acquisitions for further discussion). Prior to the acquisition of TS, the Company managed its operations in two geographic segments: the Americas and Europe. As a result of the acquisition of TS, the Company now manages its operations in three geographic segments: the Americas, Europe and Asia-Pacific. There were no Tech Data operations in the Asia-Pacific region prior to the acquisition of TS.
Consolidation, Policy	The consolidated financial statements include the accounts of Tech Data and its subsidiaries, including the results of TS from the date of acquisition of February 27, 2017. All significant intercompany accounts and transactions have been eliminated in consolidation. The Company operates on a fiscal year that ends on January 31.
Basis of Accounting, Policy	The consolidated financial statements have been prepared by the Company, without audit, pursuant to the rules and regulations of the United States Securities and Exchange Commission (“SEC”). The Company prepares its financial statements in conformity with generally accepted accounting principles in the United States (“GAAP”). These principles require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of only normal recurring adjustments) necessary to present fairly the consolidated financial position of the Company as of October 31, 2017, its consolidated statements of income and comprehensive income for the three and nine months ended October 31, 2017 and 2016, and its consolidated cash flows for the nine months ended October 31, 2017 and 2016.
Seasonal Fluctuations Policy	The Company’s quarterly operating results have fluctuated significantly in the past and will likely continue to do so in the future as a result of currency fluctuations and seasonal variations in the demand for the products and services offered. Narrow operating margins may magnify the impact of these factors on the Company's operating results. Recent historical seasonal variations have included an increase in European demand during the Company’s fiscal fourth quarter and decreased demand in other fiscal quarters. The seasonal trend in Europe typically results in greater operating leverage, and therefore, lower selling, general and administrative expenses as a percentage of net sales in the region and on a consolidated basis during the second semester of the Company's fiscal year, particularly in the Company's fourth quarter. Therefore, the results of operations for the three and nine months ended October 31, 2017 and 2016 are not necessarily indicative of the results that can be expected for the entire fiscal year ended January 31, 2018.
Acquisition and Integration Expenses, Policy	Acquisition, integration and restructuring expenses are primarily comprised of professional services, restructuring costs, transaction related costs and other costs related to the acquisition of TS (see Note 3 – Acquisitions for further discussion).
Gain (Loss) Related to Litigation Settlement	The Company has been a claimant in proceedings seeking damages from certain manufacturers of LCD flat panel and cathode ray tube displays. The Company reached settlement agreements with certain manufacturers during the nine months ended October 31, 2017 and 2016 and has recorded these amounts, net of attorney fees and other expenses, in "LCD settlements and other, net" in the Consolidated Statement of Income.
Accounts Receivable Purchase Facility Program, Policy	The Company has uncommitted accounts receivable purchase agreements under which certain accounts receivable may be sold, without recourse, to third-party financial institutions. Under these programs, the Company may sell certain accounts receivable in exchange for cash less a discount, as defined in the agreements. Available capacity under these programs, which the Company uses as a source of working capital funding, is dependent on the level of accounts receivable eligible to be sold into these programs and the financial institutions' willingness to purchase such receivables. In addition, certain of these agreements also require that the Company continue to service, administer and collect the sold accounts receivable. At October 31, 2017 and January 31, 2017, the Company had a total of $672.4 million and $506.7 million, respectively, of accounts receivable sold to and held by financial institutions under these agreements. During the three months ended October 31, 2017 and 2016, discount fees recorded under these facilities were $1.8 million and $1.6 million, respectively and during the nine months ended October 31, 2017 and 2016, discount fees recorded under these facilities were $5.9 million and $4.3 million, respectively. These discount fees are included as a component of "other (income) expense, net" in the Consolidated Statement of Income.
Recently Adopted Accounting Standards	In July 2015, the FASB issued a new accounting standard that simplifies the subsequent measurement of inventory. Under the new standard, the cost of inventory will be compared to the net realizable value (NRV). Net realizable value is defined as the estimated selling prices in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. The standard should be applied prospectively and was effective for the Company beginning with the quarter ended April 30, 2017. The adoption of this standard had no material impact on the Company's consolidated financial statements. In January 2017, the FASB issued a new standard that simplifies the subsequent measurement of goodwill by eliminating Step 2 from the annual goodwill impairment test. With the elimination of Step 2, entities will measure goodwill for impairment by comparing the fair value of the reporting unit with its carrying amount. An impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit's fair value, only to the extent of the carrying value of goodwill allocated to that reporting unit. The accounting standard should be applied prospectively. The Company early adopted the guidance during the quarter ended April 30, 2017. The adoption of this standard had no material impact on the Company's consolidated financial statements.
New Accounting Pronouncements, Policy	In May 2014, the FASB issued an accounting standard which will supersede all existing revenue recognition guidance under current GAAP. In March, April, May and December 2016, the FASB issued additional updates to the new accounting standard which provide supplemental adoption guidance and clarifications. The new standard requires the recognition of revenue to depict the transfer of promised goods or services in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods and services. The accounting standard is effective for the Company beginning with the quarter ending April 30, 2018. The standard may be adopted using either a full retrospective or a modified retrospective approach. The Company has established a project implementation team and developed a multi-phase plan to assess the Company’s business, as well as any changes to processes or systems to adopt the requirements of the new standard. The Company is in the process of finalizing its conclusions on several aspects of the standard, including principal versus agent considerations, which would impact reporting certain revenues on a gross or net basis, as well as assessing the impact of the new standard on the accounting for revenue earned by TS, which was acquired in February 2017. The Company expects to adopt the standard utilizing the full retrospective approach. In February 2016, the FASB issued an accounting standard which requires the recognition of assets and liabilities arising from lease transactions on the balance sheet and the disclosure of additional information about leasing arrangements. Under the new guidance, for all leases, interest expense and amortization of the right to use asset will be recorded for leases determined to be financing leases and straight-line lease expense will be recorded for leases determined to be operating leases. Lessees will initially recognize assets for the right to use the leased assets and liabilities for the obligations created by those leases. The new accounting standard must be adopted using a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The accounting standard is effective for the Company beginning with the quarter ending April 30, 2019, with early adoption permitted. The Company is in the process of assessing the impact of this new standard, however, the Company currently expects that the primary impact will be an increase in its total assets and total liabilities due to the recognition of right-of-use assets and corresponding lease liabilities upon implementation for leases currently accounted for as operating leases. In June 2016, the FASB issued an accounting standard which revises the methodology for measuring credit losses on financial instruments and the timing of the recognition of those losses. Under the new standard, financial assets measured at an amortized cost basis are to be presented net of the amount not expected to be collected via an allowance for credit losses. Estimated credit losses are to be based on historical information adjusted for management's expectation that current conditions and supportable forecasts differ from historical experience. The accounting standard is effective for the Company beginning with the quarter ending April 30, 2020, with early adoption permitted. The Company does not expect the adoption of this standard to have a material impact on its consolidated financial statements. In August 2016, the FASB issued a new accounting standard that addresses how certain cash receipts and cash payments are presented and classified on the statement of cash flows. The accounting standard is effective for the Company beginning with the quarter ending April 30, 2018, with early adoption permitted. The Company does not expect the adoption of this standard to have a material impact on its consolidated financial statements. In October 2016, the FASB issued a new accounting standard that revises the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. The accounting standard is effective for the Company beginning with the quarter ending April 30, 2018, with early adoption permitted. The Company does not expect the adoption of this standard to have a material impact on its consolidated financial statements. In May 2017, the FASB issued a new accounting standard that clarifies the guidance regarding the changes to the terms or conditions of a share-based payment award that would require an entity to apply modification accounting. The accounting standard is effective for the Company beginning with the quarter ending April 30, 2018, with early adoption permitted. The Company does not expect the adoption of this standard to have a material impact on its consolidated financial statements. In August 2017, the FASB issued a new accounting standard that amends and simplifies guidance related to hedge accounting to more accurately portray the economics of an entity’s risk management activities in its financial statements. The accounting standard is effective for the Company beginning with the quarter ending April 30, 2019, with early adoption permitted. The Company does not expect the adoption of this standard to have a material impact on its consolidated financial statements.