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Receivables Sales Agreement - Additional Information (Narrative) (Detail) $ in Millions	Mar. 31, 2023 USD ($)
Receivables Sales Agreement [Line Items]
Proceeds from factored receivables	$ 100.0
Maximum
Receivables Sales Agreement [Line Items]
Proceeds from factored receivables	$ 100.0

X

- Definition

Receivables Sales Agreement

+ References

No definition available.

+ Details

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Namespace Prefix:	ttec_
Data Type:	xbrli:stringItemType
Balance Type:	na
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X

- Definition

Amount, before valuation allowance, of accounts and financing receivables held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124265262&loc=d3e48678-111004

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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