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FINANCING: (Tables) | 12 Months Ended
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Dec. 31, 2023
FINANCING: |
Schedule of long-term debt | Long-term debt (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Carrying
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | value as of
​ | ​ | Face | ​ | Issuance | ​ | Issuance | ​ | December 31,
​ |  | amount |  | discount |  | costs |  | 2023
3.875% Senior unsecured notes due 2025 |  |  | 500 | ​ | ​ | (0.4) | ​ | ​ | (0.4) | ​ |  | 499.2
9.250% Yankee bonds due 2028 |  |  | 51.2 | ​ | ​ | — | ​ | ​ | — | ​ |  | 51.2
7.500% Senior unsecured notes due 2035 |  |  | 1,000 | ​ | ​ | (10.5) | ​ | ​ | (7.0) | ​ |  | 982.5
6.750% Senior unsecured notes due 2040 | ​ | ​ | 1,100 | ​ | ​ | (6.3) | ​ | ​ | (5.1) | ​ | ​ | 1,088.6
5.250% Senior unsecured notes due 2042 |  |  | 1,200 | ​ | ​ | (17.1) | ​ | ​ | (5.7) | ​ |  | 1,177.2
5.875% Senior unsecured notes due 2045 |  |  | 1,500 | ​ | ​ | (15.1) | ​ | ​ | (8.0) | ​ | ​ | 1,476.9
4.500% Minera Mexico Senior unsecured notes due 2050 | ​ | ​ | 1,000 | ​ | ​ | (11.8) | ​ | ​ | (9.2) | ​ |  | 979.0
Total | ​ | $ | 6,351.2 | ​ | $ | (61.2) | ​ | $ | (35.4) | ​ |  | 6,254.6
Less, current portion | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | —
Total long-term debt | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 6,254.6
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | ​ | ​ |  | Carrying
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | value as of
​ | ​ | Face | ​ | Issuance | ​ | Issuance | ​ | December 31,
​ | ​ | amount | ​ | discount | ​ | costs | ​ | 2022
3.875% Senior unsecured notes due 2025 | ​ | $ | 500 | ​ | $ | (0.7) | ​ | $ | (0.7) | ​ | $ | 498.6
9.250% Yankee bonds due 2028 | ​ |  | 51.2 | ​ | ​ | — | ​ | ​ | — | ​ |  | 51.2
7.500% Senior unsecured notes due 2035 | ​ |  | 1,000 | ​ | ​ | (11.0) | ​ | ​ | (7.3) | ​ |  | 981.7
6.750% Senior unsecured notes due 2040 | ​ |  | 1,100 | ​ | ​ | (6.6) | ​ | ​ | (5.2) | ​ | ​ | 1,088.2
5.250% Senior unsecured notes due 2042 | ​ | ​ | 1,200 | ​ | ​ | (17.6) | ​ | ​ | (5.9) | ​ |  | 1,176.5
5.875% Senior unsecured notes due 2045 | ​ |  | 1,500 | ​ | ​ | (15.4) | ​ | ​ | (8.2) | ​ | ​ | 1,476.4
4.500% Minera Mexico Senior unsecured notes due 2050 | ​ |  | 1,000 | ​ | ​ | (12.1) | ​ | ​ | (9.3) | ​ |  | 978.6
Total | ​ | $ | 6,351.2 | ​ | $ | (63.4) | ​ | $ | (36.6) | ​ |  | 6,251.2
Less, current portion | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | —
Total long-term debt | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 6,251.2
Schedule of aggregate maturities of the outstanding borrowings | ​
​ | ​ | ​ | ​
​ |  | Principal
Years | ​ | Due(*)
​ | ​ | (in millions)
2024 |  | $ | —
2025 | ​ | ​ | 500.0
2026 | ​ |  | —
2027 | ​ |  | —
2028 | ​ | ​ | 51.2
Thereafter | ​ |  | 5,800.0
Total | ​ | $ | 6,351.2
(*)Total debt maturities do not include the debt discount valuation account of $96.5 million.

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