GOODWILL (NARRATIVE) (DETAILS) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
GOODWILL [ABSTRACT]
Method used to calculate fair value of reporting unit that has goodwill at risk	The fair value of this reporting unit was calculated using an income approach based on discounted future cash flows. Key assumptions used in the income approach included, but are not limited to, estimated future cash flows, a perpetuity growth rate of 6.6% based on the current inflation rate combined with the GDP growth rate for the reporting unit’s region, and a discount rate of 26.5%, which is the Company’s weighted average cost of capital adjusted for country specific factors associated with the reporting unit’s economy and geography.
Goodwill amount of reporting units where fair value is not substantially in excess of carrying value	$ 7.3
Fair value of a reporting unit in excess of carrying value expressed as a percentage	4.00%

The amount of goodwill associated with reporting units where the fair value is not in substantial excess of carrying value. In other words, this amount represents goodwill that is at risk.

No definition available.

Name:	ttec_GoodwillAmountReportingUnitWhereFairValueNotSubstantiallyInExcessOfCarryingValue
Namespace Prefix:	ttec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant