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FAIR VALUE (NARRATIVE) (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
FAIR VALUE [Abstract]
Average interest rate on annual borrowings	1.50%
Future Value of Liabilities Incurred From Business Acquisitions	$ 14.5
Contingent Consideration Cash Payment		$ 5

X

- Definition

Future value of liabilities incurred by the acquirer to former owners of the acquiree.

+ References

No definition available.

+ Details

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Namespace Prefix:	ttec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of cash payment made on contingent consideration arrangement from business acquisition.

+ References

No definition available.

+ Details

Name:	ttec_ContingentConsiderationCashPayment
Namespace Prefix:	ttec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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X

- Definition

The effective interest rate during the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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