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employee future benefits - Fair value measurements (Details) - Pension plans - CAD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Fair value measurements
Asset-backed securities	$ 30	$ 31
Cash, cash equivalents and other	338	486
Real estate	1,316	1,047
Fair value	9,043	9,195
Effect of asset ceiling limit	(263)	(110)
Fair value after asset ceiling	8,780	9,085
Fair value of administered pension benefit trusts	2	3
Quoted prices in active markets for identical items
Fair value measurements
Cash, cash equivalents and other	8	38
Fair value	2,779	3,409
Other
Fair value measurements
Asset-backed securities	30	31
Cash, cash equivalents and other	330	448
Real estate	1,316	1,047
Fair value	6,264	5,786
Canadian
Fair value measurements
Equity securities	1,048	1,385
Canadian | Quoted prices in active markets for identical items
Fair value measurements
Equity securities	821	1,129
Canadian | Other
Fair value measurements
Equity securities	227	256
Foreign
Fair value measurements
Equity securities	1,943	1,867
Foreign | Quoted prices in active markets for identical items
Fair value measurements
Equity securities	581	853
Foreign | Other
Fair value measurements
Equity securities	1,362	1,014
Government securities
Fair value measurements
Debt securities	1,494	1,512
Government securities | Quoted prices in active markets for identical items
Fair value measurements
Debt securities	1,369	1,389
Government securities | Other
Fair value measurements
Debt securities	125	123
Corporate debt securities
Fair value measurements
Debt securities	1,243	1,208
Corporate debt securities | Other
Fair value measurements
Debt securities	1,243	1,208
Commercial mortgages
Fair value measurements
Debt securities	1,631	1,659
Commercial mortgages | Other
Fair value measurements
Debt securities	$ 1,631	$ 1,659

X

- Definition

The amount that securities that are backed by underlying assets constitute of the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]]

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The amount that cash and cash equivalents constitute of the fair value of defined benefit plan assets. [Refer: Cash and cash equivalents; Plan assets, at fair value; Defined benefit plans [member]]

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The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]]

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The amount that real estate constitutes of the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]]

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The fair value of defined benefit plan assets, adjusted for any effect of limiting it to the asset ceiling. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. The asset ceiling is the present value of any economic benefits available in the form of refunds from the defined benefit plan or reductions in future contributions to the defined benefit plan.

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The fair value of assets of administered pension benefit trusts related to a legacy plan that was grandfathered prior to the merger between BC Telecom and TELUS Corporation. This plan holds no TELUS Common Shares, but holds debt of TELUS Corporation.

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Amount of reduction in fair value of plan assets due to limitation of plan surplus under asset ceiling provision.

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