Debt Instrument, Redemption Price, Discounted Scheduled Payments, Discount Rate, Basis Spread on Variable Rate

No definition available.

Name:	tecd_DebtInstrumentRedemptionPriceDiscountedScheduledPaymentsDiscountRateBasisSpreadonVariableRate
Namespace Prefix:	tecd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=tecd_A3.70SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=tecd_A4.95SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt \| Senior Notes (Details) - USD ($) $ in Thousands	6 Months Ended
Debt \| Senior Notes (Details) - USD ($) $ in Thousands	Jul. 31, 2018	Jul. 31, 2017	Jan. 31, 2018	Feb. 27, 2017	Jan. 31, 2017
Debt Instrument
Proceeds from Issuance of Long-term Debt	$ 0	$ 1,008,148
Senior Notes \| 3.70% Senior Notes
Debt Instrument
Debt Instrument, Face Amount	500,000		$ 500,000		$ 500,000
Debt Instrument, Redemption Price, Discounted Scheduled Payments, Discount Rate, Basis Spread on Variable Rate				0.30%
Debt Instrument, Interest Rate, Stated Percentage					3.70%
Senior Notes \| 4.95% Senior Notes
Debt Instrument
Debt Instrument, Face Amount	$ 500,000		$ 500,000		$ 500,000
Debt Instrument, Redemption Price, Discounted Scheduled Payments, Discount Rate, Basis Spread on Variable Rate				0.40%
Debt Instrument, Interest Rate, Stated Percentage					4.95%