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Property, Plant and Equipment - Additional Information (Detail) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021 CAD ($) shares $ / shares	Dec. 31, 2020 CAD ($)
Disclosure of detailed information about property, plant and equipment [Line Items]
Gains on disposals of assets	$ 9	$ 12
Cathedral Energy Services Ltd [Member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Gains on disposals of assets	1
Purchase price	6
Cash Assistance For Growth And Expansion	$ 3
Issuance of common shares | shares	13,400,000
Number of share warrant issued | shares	2,000,000
Number of share warrant issued, per share | $ / shares	$ 0.60

X

- Definition

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

+ References

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- Definition

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+ References

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- Definition

The gain on the disposal of property, plant and equipment. [Refer: Property, plant and equipment]

+ References

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- Definition

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.

+ References

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-Number 3
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- Definition

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- Definition

The nominal value per share.

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Cash assistance for growth and expansion.

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