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Financial Instruments and Financial Risk Management - Summary of U.S. Dollar Financial Instruments Subject to Foreign Exchange Risk (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Maximum exposure to credit risk | $ 2,622 | $ 325
Canada, Dollars | Currency risk | Cash and cash equivalents |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Maximum exposure to credit risk | 4,019 | 59
Canada, Dollars | Currency risk | Trade and settlement receivables |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Maximum exposure to credit risk | 524 | 1,145
Canada, Dollars | Currency risk | Trade accounts payable and other liabilities |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Maximum exposure to credit risk | 877 | 743
Canada, Dollars | Currency risk | Debt (Note 22) |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Maximum exposure to credit risk | 1,044 | 2,470
Reduced by: Debt designated as a hedging instrument in our net investment hedge | Canada, Dollars | Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Maximum exposure to credit risk | $ 0 | $ 2,334

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