INVESTMENTS - Associates and Joint Venture Investment Impact (Details) - CAD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Associates And Joint Ventures [Line Items]
Current assets	$ 5,829	$ 6,929
Current liabilities	(8,619)	(6,586)
Net income for the year	1,558	1,592
Associates \| Joint ventures
Disclosure Of Associates And Joint Ventures [Line Items]
Current assets	537	512
Long-term assets	3,254	3,409
Current liabilities	(990)	(857)
Long-term liabilities	(1,177)	(1,358)
Total net assets	1,624	1,706
Our share of net assets	855	900
Revenue	1,805	1,310
Expenses	(1,912)	(1,410)
Net income for the year	(107)	(100)
Our share of net loss	$ (44)	$ (40)

The amount of assets that the entity (a) expects to realise or intends to sell or consume in its normal operating cycle; (b) holds primarily for the purpose of trading; (c) expects to realise within twelve months after the reporting period; or (d) classifies as cash or cash equivalents (as defined in IAS 7) unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. [Refer: Assets]

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