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Financial Instruments - Exposure to credit risk receivables (Details) - CAD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about financial instruments [line items]
Trade receivables	$ 392,865	$ 392,759
Loss allowance	0
Net	392,865
Investment grade rating [Member]
Disclosure of detailed information about financial instruments [line items]
Trade receivables	327,682
Non-investment grade rating [Member]
Disclosure of detailed information about financial instruments [line items]
Trade receivables	$ 65,183

X

- References

No definition available.

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- Definition

The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets]

+ References

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X

- Definition

The amount of current trade receivables. [Refer: Trade receivables]

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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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