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DERIVATIVES (INTEREST RATE SWAPS) (DETAILS) (USD $) In Millions, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Derivative [Line Items] |  |
Notional Amount | $ 40 | $ 40
Interest Rate Swap One [Member] |  |
Derivative [Line Items] |  |
Notional Amount | 25 | 25
Variable Rate Received | 1 - month LIBOR | 1 - month LIBOR
Fixed Rate Paid | 2.55% | 2.55%
Contract Commencement Date | Apr. 01, 2012 | Apr. 01, 2012
Contract Maturity Date | Apr. 01, 2016 | Apr. 01, 2016
Interest Rate Swap Two [Member] |  |
Derivative [Line Items] |  |
Notional Amount | $ 15 | $ 15
Variable Rate Received | 1 - month LIBOR | 1 - month LIBOR
Fixed Rate Paid | 3.14% | 3.14%
Contract Commencement Date | May 01, 2012 | May 01, 2012
Contract Maturity Date | May 01, 2017 | May 01, 2017

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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- Definition Variable interest rate in effect as of the balance sheet date related to the interest rate derivative. + References No definition available. + Details
Name: | ttec_DerivativeVariableInterestRateTerm
Namespace Prefix: | ttec_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Date the entity entered into the derivative contract, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeInceptionDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
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Period Type: | duration

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- Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeMaturityDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
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Period Type: | duration