Intangible assets and goodwill - Disclosure of information for cash-generating units (Details)	Dec. 31, 2024
Disclosure of detailed information about intangible assets [abstract]
Decreases in growth rate	0.0040
Increases in discount rate	0.0020
Decreases in perpetual growth rate	0.0030

Decrease In Perpetual Growth Rate Used To Extrapolate Cash Flow Projections

No definition available.

Name:	tixt_DecreaseInPerpetualGrowthRateUsedToExtrapolateCashFlowProjections
Namespace Prefix:	tixt_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant