The increase (decrease) in goodwill. [Refer: Goodwill]

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The fair value, at the acquisition date, of equity interests of the acquirer transferred as consideration in a business combination. [Refer: Business combinations [member]]

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The number of instruments or interests issued or issuable at acquisition date for equity interests of the acquirer transferred as consideration in a business combination.

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The portion of consideration paid or received, consisting of cash and cash equivalents, in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [member]; Cash and cash equivalents; Consideration paid (received)]

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The cash inflow from the issuing of ordinary shares. [Refer: Ordinary shares [member]]

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The number of shares that will replace a single share in the share split transaction.

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Related party transactions - Other transactions with TELUS Corporation (Details) shares in Millions, $ in Millions					1 Months Ended		3 Months Ended	12 Months Ended
	Feb. 03, 2021 shares	Dec. 29, 2020 USD ($) shares	Apr. 01, 2020 USD ($) shares	Jan. 29, 2020 USD ($) shares	Jan. 31, 2021 USD ($)	Apr. 30, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Related party transactions
Amounts due from affiliates, receivable period								30 days
Term of master service agreement					10 years
Shares issued (in shares) \| shares	21.0
Shares issued								$ 3	$ 527	$ 656
Class C common shares \| Managed It Services
Related party transactions
Shares issued for acquisition (in shares) \| shares			3.5
Fair value of shares issued			$ 49
Multiple voting shares
Related party transactions
Share split ratio	4.5							4.5
TELUS Corporation (parent)
Related party transactions
Minimum annual spend amount					$ 200
Shares issued				$ 126
Portion of consideration paid (received) consisting of cash and cash equivalents							$ 1
Identifiable assets acquired (liabilities assumed)							2	$ 2
Increase (decrease) in goodwill							$ 9
TELUS Corporation (parent) \| Common Share
Related party transactions
Shares issued (in shares) \| shares			5.4
Shares issued						$ 75
TELUS Corporation (parent) \| Class A common shares
Related party transactions
Shares issued (in shares) \| shares		7.6		14.7
Shares issued		$ 150
TELUS Corporation (parent) \| Class C common shares
Related party transactions
Shares issued (in shares) \| shares				0.2
TELUS Corporation (parent) \| Multiple voting shares
Related party transactions
Shares issued (in shares) \| shares	153.0
Number of shares converted to subordinate voting shares (in shares) \| shares	6.5