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Fair value measurement (Tables) | 12 Months Ended
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Dec. 31, 2022
FAIR VALUE MEASUREMENT [Abstract] |
Schedule of financial assets and liabilities by category and information about financial assets and liabilities measured at fair value on recurring basis | The following table summarizes the Company’s financial assets and liabilities by category and information about financial assets and liabilities measured at fair value on a recurring basis in the statement of financial position categorized by level of significance of the inputs used in making the measurements:
|  | As at December 31, 2022 | As at December 31, 2021
(in millions of U.S. dollars) | Category | Level |  | Level |
FINANCIAL ASSETS |  |  |  |  |
Cash and cash equivalents | Financial assets at amortized cost |  | 200.8 |  |  | 481.5 |
Trade and other receivables(1) | Financial assets at amortized cost |  | 15.9 |  |  | 14.2 |
Provisionally priced contracts | Financial instruments at FVTPL | 2 | 2.3 |  | 2 | 1.2 |
Gold and copper swap contracts | Financial instruments at FVTPL | 2 | (4.1) |  | 2 | (1.8) |
Foreign exchange forward contracts | Financial instruments at FVTPL | 2 | 0.4 |  | 2 | 1.5 |
Proceeds due from income tax refunds at Mesquite(2) | Financial assets at amortized cost | 1 | — |  | 1 | 12.8 |
Investments | Financial instruments at FVTPL | 1 | 35.6 |  | 1 | 59.5 |
FINANCIAL LIABILITIES |  |  |  |  |
Trade and other payables(3) | Financial liabilities at amortized cost |  | 141.1 |  |  | 124.3 |
Long-term debt | Financial liabilities at amortized cost |  | 394.9 |  |  | 491.0 |
Gold stream obligation | Financial instruments at FVTPL | 3 | 174.7 |  | 3 | 194.0 |
Free cash flow interest obligation | Financial instruments at FVTPL | 3 |  | 378.9 |  | 3 |  | 467.4 |
1.Trade and other receivables exclude provisionally priced contracts, and gold and copper swap contracts. 2.Proceeds due from income tax refunds at Mesquite are included in trade and other receivables on the consolidated statement of financial position. The tax refunds were collected in September 2022. 3.Trade and other payables exclude the short-term portion of reclamation and closure cost obligation and the short-term portion of the gold stream obligation and New Afton free cash flow interest obligation.
Schedule of carrying values and fair values of financial instruments | The carrying values and fair values of the Company’s financial instruments are as follows:
As at December 31, 2022 | As at December 31, 2021
(in millions of U.S. dollars) | Carrying value | Fair value | Carrying value | Fair value
FINANCIAL ASSETS |  |  |  |
Cash and cash equivalents | 200.8 |  | 200.8 |  | 481.5 |  | 481.5 |
Trade and other receivables(1) | 15.9 |  | 15.9 |  | 14.2 |  | 14.2 |
Provisionally priced contracts | 2.3 |  | 2.3 |  | 1.2 |  | 1.2 |
Gold and copper swap contracts | (4.1) |  | (4.1) |  | (1.8) |  | (1.8) |
Foreign exchange forward contracts | 0.4 |  | 0.4 |  | 1.5 |  | 1.5 |
Proceeds due from income tax refunds at Mesquite(2) | — |  | — |  | 12.8 |  | 12.8 |
Investments | 35.6 |  | 35.6 |  | 59.5 |  | 59.5 |
FINANCIAL LIABILITIES |  |  |  |
Trade and other payables(3) | 141.1 |  | 141.1 |  | 124.3 |  | 124.3 |
Long-term debt | 394.9 |  | 355.0 |  | 491.0 |  | 530.8 |
Gold stream obligation | 174.7 |  | 174.7 |  | 194.0 |  | 194.0 |
Free cash flow interest obligation | 378.9 |  | 378.9 |  | 467.4 |  | 467.4 |
1.Trade and other receivables exclude provisionally priced contracts and gold and copper swap contracts. 2.Proceeds due from income tax refunds at Mesquite are included in trade and other receivables on the consolidated statement of financial position. The tax refunds were collected in September 2022. 3.Trade and other payables exclude the short-term portion of reclamation and closure cost obligation and the short-term portion of the gold stream obligation and New Afton free cash flow interest obligation.

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