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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
SUPPLEMENTAL CASH FLOW INFORMATION |  |
Accounts receivable | $ 954 | $ (1,099)
Inventories | 121 | (628)
Accounts payable and accrued liabilities | (1,472) | 1,317
Current portion of provisions | (11) | (14)
Income taxes payable (net) | (1,350) | 436
Total (increase) decrease in working capital | (1,758) | 12
Relating to : |  |
Increase in non-cash working capital | (1,201) | (397)
(Increase) decrease in non-cash working capital | (557) | 409
Total (increase) decrease in working capital | $ (1,758) | $ 12

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- Definition Adjustments for decrease (increase) in trade accounts receivable to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 20 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Adjustments for provisions to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Provisions; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 20 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20_b&doctype=Standard -URIDate 2020-01-01 + Details
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