The percentage of fair value in excess of carrying value for reporting units where goodwill is at risk of being impaired.

No definition available.

+ Details

Name:	ttec_GoodwillFairValueInExcessOfCarryingValueExpressedAsPercentageForGoodwillAtRisk
Namespace Prefix:	ttec_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2420-110228

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

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

- Definition

Description of the method used by the entity to determine the fair value of the impaired intangible asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- 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

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

- Details

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Namespace Prefix:
Data Type:	na
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- Details

Name:	ttec_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsAxisAxis=ttec_RevanaMember
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GOODWILL (NARRATIVE) (DETAILS) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
GOODWILL (NARRATIVE) (DETAILS) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems
Impairment losses	$ 3,066	$ 3,066
WebMetro [Member]
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems
Fair value of a reporting unit in excess of carrying value expressed as a percentage			11.00%
Impaired Intangible Asset, Method for Fair Value Determination		For the goodwill impairment analysis, the Company calculated the fair value of the WebMetro reporting unit and compared that to the updated carrying value and determined that the fair value was not in excess of its carrying value. Key assumptions used in the fair value calculation for goodwill impairment testing include, but are not limited to, a compounded annual revenue growth rate of 20% for years 2016 through 2019, a perpetuity growth rate of 4.0% based on the current inflation rate combined with the GDP growth rate for the reporting unit's geographical region and a discount rate of 17.0%, which is equal to the reporting unit's equity risk premium adjusted for its size and company specific risk factors.
Impairment losses		$ 3,100
Revana [Member]
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems
Fair value of a reporting unit in excess of carrying value expressed as a percentage	23.00%	23.00%	6.00%