Shareholders' Equity (Company's Common Share Repurchase And Issuance Activity) (Details) (USD $)	12 Months Ended
Jan. 31, 2015	Jan. 31, 2014
Equity [Abstract]
Stock Issued During Period, Shares, Treasury Stock Reissued	207,779	259,436
Increase (Decrease) in Treasury Stock [Roll Forward]
Treasury stock, beginning balance, Shares	21,177,130us-gaap_TreasuryStockNumberOfSharesHeld	21,436,566us-gaap_TreasuryStockNumberOfSharesHeld
Shares of common stock repurchased under share repurchase programs, Shares	896,718us-gaap_TreasuryStockSharesAcquired
Treasury stock, ending balance, Shares	21,866,069us-gaap_TreasuryStockNumberOfSharesHeld	21,177,130us-gaap_TreasuryStockNumberOfSharesHeld
Treasury stock, beginning balance, Weighted-average price per share	$ 42.26	$ 42.26
Shares of common stock repurchased under share repurchase programs, Weighted-average price per share	$ 59.10
Treasury stock, ending balance, Weighted-average price per share	$ 42.95	$ 42.26

Name:	tecd_IncreaseDecreaseInTreasuryStockRollForward
Namespace Prefix:	tecd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Treasury Stock Held Average Cost Per Share

+ References

No definition available.

+ Details

Name:	tecd_TreasuryStockHeldAverageCostPerShare
Namespace Prefix:	tecd_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

+ Details

Name:	us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares held for each class of treasury stock.

+ References

+ Details

Name:	us-gaap_TreasuryStockNumberOfSharesHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

+ Details

Name:	us-gaap_TreasuryStockSharesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration