INCOME TAXES (NARRATIVE) (DETAILS) (USD $) In Millions, unless otherwise specified	2 Months Ended	3 Months Ended		6 Months Ended			2 Months Ended	3 Months Ended	6 Months Ended	7 Months Ended	6 Months Ended
	Feb. 20, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Philippines [Member]	Feb. 20, 2011 Canada [Member]	Mar. 31, 2011 Canada [Member]	Jun. 30, 2012 Australia [Member]	Jul. 25, 2012 Australia [Member]	Jun. 30, 2012 New Zealand [Member]
Income Tax Disclosure [Abstract]
Gross deferred tax assets		$ 67.9		$ 67.9
Deferred tax liabilities		4.9		4.9
Deferred tax asset valuation allowance		12.6		12.6
Net deferred tax assets (after deferred tax liabilities)		50.4		50.4
Effective income tax rate		(25.60%)	0.60%	2.50%	22.40%
Income Tax Examination [Line Items]
Year income taxes under audit	2002					2008	2001
Restructuring and impairment expense		17.3		21.1
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Income Tax Examination, Description							In 2005, through the Competent Authority process, the Company sought relief under the United States-Canada Income Tax Convention for avoidance of double taxation arising from adjustments to the taxable income originally reported to these jurisdictions. Consistent with accounting for tax positions that no longer meet the recognition criteria, the Company derecognized income tax positions totaling $8.6 million through income tax expense in the first quarter of 2011. The Company continues to believe in the merits of its claim for which it sought relief from double taxation through the Competent Authority process. In response to the February 2011 notice, the Company has filed for Judicial Review in the Federal Court of Canada seeking a writ of mandamus to compel the CRA to accept the Company’s application for Competent Authority consideration.
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit									3.9		1.3
Significant Change in Unrecognized Tax Benefits, Nature of Event										On July 25, 2012 the Company entered into a unilateral Advance Pricing Agreement (“APA”) with the Australian Tax Office (“ATO”) that covers the intercompany transfer price TeleTech Australia will pay affiliates operating in other tax jurisdictions for subcontracted services. The agreement will preclude the ATO from making a transfer pricing adjustment to transactions within the scope of this agreement. This agreement is effective for five years beginning January 1, 2011. During the period January 1, 2011 through June 30, 2012 TeleTech Australia recorded payments for services performed by affiliates outside Australia according to intercompany service agreements in effect at the time and subsequently measured the tax benefit related to these tax positions in accordance with accounting for uncertain tax positions.	In addition, the Company is also in the final stages of negotiating a unilateral APA with the New Zealand Inland Revenue office covering similar transactions and time periods. Although there can be no guarantee that such negotiations will result in an agreement, should such an agreement be signed, the Company would recognize an additional $1.3 million in tax benefit.
Tax Adjustments, Settlements, and Unusual Provisions								$ (8.6)	$ 1.9