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Supplementary Cash Flow Information - Non-Cash Working Capital (Details) - CAD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Disclosure Of Supplementary Cash Flow Information [Line Items] |  |  |  |  |
Current assets | $ 15,321 |  | $ 15,321 |  | $ 11,988
Current Liabilities | 8,865 |  | 8,865 |  | 7,305
Working Capital | 6,456 |  | 6,456 |  | 4,683
Adjusted working capital | 6,100 |  | 6,100 |  | 3,800
Investments in joint ventures accounted for using equity method, current |  |  |  |  | 1,300
Contingent Payment | 0 |  | 0 |  | 236
Accounts Receivable and Accrued Revenues | 282 | $ (221) | (1,627) | $ (874) |
Income Tax Receivable | 8 | 4 | 23 | 13 |
Inventories | (505) | (406) | (1,310) | (1,014) |
Accounts Payable and Accrued Liabilities | (388) | 237 | 1,159 | 640 |
Income Tax Payable | 591 | (3) | 803 | (45) |
Total Non-Cash Working Capital | (12) | (389) | (952) | (1,280) |
Net Change in Non-Cash Working Capital - Operating Activities | (92) | (430) | (1,291) | (1,332) |
Net Change in Non-Cash Working Capital - Investing Activities | 80 | $ 41 | 339 | $ 52 |
Liabilities Related to Assets Held for Sale | $ 119 |  | $ 119 |  | $ 186

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