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v3.21.1

PROVISIONS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Provisions reconciliation |  |
Provisions at beginning of period | $ 896.5 |
Additions | 53.6 |
Reductions | (15.2) |
Reclamation spending | (39.6) |
Accretion | 23.0 |
Reclamation expense | 6.6 |
Provisions at end of period | 924.9 | $ 896.5
Current portion | 63.8 |
Non-current portion | 861.1 |
Other operating expense | 186.5 | 108.5
Reclamation and remediation obligations |  |
Provisions reconciliation |  |
Provisions at beginning of period | 866.1 |
Additions | 45.0 |
Reductions | (5.0) |
Reclamation spending | (39.6) |
Accretion | 23.0 |
Reclamation expense | 6.6 |
Provisions at end of period | 896.1 | 866.1
Current portion | 58.7 |
Non-current portion | 837.4 |
Other operating expense | 6.6 | 11.9
Letter of credit issued to various agencies | 379.9 | 391.9
Surety bonds | $ 289.3 | $ 275.7
Reclamation and remediation obligations | Minimum |  |
Provisions reconciliation |  |
Discount rate used in estimating site restoration cost obligation (in percent) | 0.40% | 1.70%
Inflation rate used in estimating the site restoration cost obligation (in percent) | 2.10% | 2.20%
Reclamation and remediation obligations | Maximum |  |
Provisions reconciliation |  |
Discount rate used in estimating site restoration cost obligation (in percent) | 13.30% | 14.70%
Inflation rate used in estimating the site restoration cost obligation (in percent) | 4.00% | 4.00%
Other |  |
Provisions reconciliation |  |
Provisions at beginning of period | $ 30.4 |
Additions | 8.6 |
Reductions | (10.2) |
Provisions at end of period | 28.8 | $ 30.4
Current portion | 5.1 |
Non-current portion | $ 23.7 |

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