real estate joint ventures and investment in associate - Commitments and contingent liabilities (Details) - CAD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
real estate joint venture
Advances	$ 18,474	$ 14,101
Real estate joint ventures
real estate joint venture
Construction financing amount	342	342
Real estate joint ventures \| TELUS Corporation Construction Credit Facility
real estate joint venture
Construction financing amount	114	114
Undrawn	10	45
Advances	104	69
Real estate joint ventures \| Construction Credit Facility – Other
real estate joint venture
Construction financing amount	228	228
TELUS Sky real estate joint venture
real estate joint venture
Real estate joint venture approximate total capital spending	450	400
Contractual capital commitments	$ 37	$ 35
Percentage of financing provided	33.333%
Construction financing amount	$ 342
TELUS Sky real estate joint venture \| Canadian financial institutions
real estate joint venture
Percentage of financing provided	66.667%

The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
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-URIDate 2019-03-27

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The amount of construction financing under a credit agreement.

+ References

No definition available.

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- Definition

The amount of undrawn credit facilities provided by the entity to a joint venture investment

+ References

No definition available.

+ Details

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- Definition

Total long-term borrowings, including the current and non-current portion.

+ References

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- Definition

The percentage of construction financing provided.

+ References

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- Definition

The amount of expected costs relating to real estate joint venture projects.

+ References

No definition available.

+ Details

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