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Non-Controlling Interests - Schedule of Financial Statements (Details) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Mar. 29, 2019
Summarized balance sheet |  |  |
Current assets | $ 4,495 | $ 5,317 |
Current liabilities | 2,776 | 2,516 |
Accumulated non-controlling interests | 770 | 134 |
Summarized statement of comprehensive income (loss) |  |  |
Revenue | 11,934 | 12,564 |
Loss for the period | (588) | 3,145 |
Other comprehensive income (loss) | (231) | 392 |
Total comprehensive income (loss) | (819) | 3,537 |
Loss allocated to non-controlling interests | 17 | 38 |
Summarized cash flows |  |  |
Cash flows from operating activities | 3,484 | 4,438 |
Cash flows from investing activities | (3,566) | (1,605) |
Cash flows from financing activities | (537) | (2,164) |
Effect of exchange rate changes on cash and cash equivalents | (89) | 113 |
Net increase in cash and cash equivalents | (708) | 782 |
Quebrada Blanca |  |  |
Summarized balance sheet |  |  |
Current assets | 653 | 153 |
Current liabilities | 512 | 204 |
Current net assets | 141 | (51) |
Non-current assets | 6,628 | 4,952 |
Non-current liabilities | 3,448 | 2,217 |
Non-current net assets | 3,180 | 2,735 |
Net assets | 3,321 | 2,684 |
Accumulated non-controlling interests | 634 | 10 | $ 793
Summarized statement of comprehensive income (loss) |  |  |
Revenue | 170 | 224 |
Loss for the period | (120) | (97) |
Other comprehensive income (loss) | (138) | 202 |
Total comprehensive income (loss) | (258) | 105 |
Loss allocated to non-controlling interests | (24) | (12) |
Summarized cash flows |  |  |
Cash flows from operating activities | (298) | (33) |
Cash flows from investing activities | (1,255) | (429) |
Cash flows from financing activities | 2,076 | 464 |
Effect of exchange rate changes on cash and cash equivalents | (22) | 0 |
Net increase in cash and cash equivalents | $ 501 | $ 2 |

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- Definition Summarized Cash Flows [Abstract] + References No definition available. + Details
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- Definition Summarized Statement Of Comprehensive Income [Abstract] + References No definition available. + Details
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- Details
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