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Foreign Exchange (Details) $ in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2021 CAD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CAD ($) | Dec. 31, 2020 USD ($)
Effects Of Changes In Foreign Exchange Rates [Line Items] |  |  |  |
Adjustments for unrealised foreign exchange losses (gains) | $ 1,905 |  | $ (9,232) |
Realized foreign exchange gain | (963) |  | (544) |
Foreign exchange (gain) loss | (2,868) |  | 8,688 |
Intercompany notes |  | $ 601.0 |  | $ 751.0
Intercompany notes redeemed and cancelled |  |  |  | $ 150.0
Unrealized foreign exchange loss - intercompany notes |  |  |  |
Effects Of Changes In Foreign Exchange Rates [Line Items] |  |  |  |
Adjustments for unrealised foreign exchange losses (gains) | 12,000 |  | 31,617 |
Unrealized foreign exchange gain - long-term notes & credit facilities |  |  |  |
Effects Of Changes In Foreign Exchange Rates [Line Items] |  |  |  |
Adjustments for unrealised foreign exchange losses (gains) | $ (13,905) |  | $ (22,385) |

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- Definition Adjustments for unrealised foreign exchange losses (gains) 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 2021-01-01 -Paragraph 20 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_20_b&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Section A Statement of cash flows for an entity other than a financial institution -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&doctype=Illustrative%20Examples&dita_xref=IAS07_IE_A__IAS07_IE_A_TI -URIDate 2021-03-24 + Details
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- Definition The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2021-01-01 -Paragraph 52 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2021-en-r&anchor=para_52_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 35 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_35&doctype=Standard -URIDate 2021-03-24 + Details
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