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Supplemental Cash Flow Information - Changes in non cash working capital (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Supplemental Cash Flow Information |  |
Accounts receivable | $ (1,750) | $ (1,324)
Inventories | (1,128) | (551)
Accounts payable and accrued liabilities | 1,512 | 1,588
Current portion of provisions | (286) | 235
Income taxes payable (net) | (717) | 1,830
Total (increase) decrease in non-cash working capital | (2,369) | 1,778
Relating to : |  |
(Increase) decrease in non-cash working capital | (2,421) | 1,507
Decrease in non-cash working capital | 52 | 271
Total (increase) decrease in non-cash working capital | $ (2,369) | $ 1,778

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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 2022-03-24 -Paragraph 20 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2022-en-r&anchor=para_20_a&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Adjustments for income tax expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2022-03-24 -Paragraph 35 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35&doctype=Standard -URIDate 2022-03-24 + 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 2022-03-24 -Paragraph 20 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2022-en-r&anchor=para_20_b&doctype=Standard -URIDate 2022-03-24 + Details
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