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v3.20.1

PROVISIONS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Provisions reconciliation |  |
Provisions at beginning of period | $ 889.0 |
Additions | 62.9 |
Reductions | (19.1) |
Reclamation spending | (55.4) |
Accretion | 31.0 |
Reclamation recovery | (11.9) |
Provisions at end of period | 896.5 | $ 889.0
Current portion | 57.9 |
Non-current portion | 838.6 |
Other operating expense | 108.5 | 137.0
Reclamation and remediation obligations |  |
Provisions reconciliation |  |
Provisions at beginning of period | 854.1 |
Additions | 55.7 |
Reductions | (7.4) |
Reclamation spending | (55.4) |
Accretion | 31.0 |
Reclamation recovery | (11.9) |
Provisions at end of period | 866.1 | 854.1
Current portion | 50.5 |
Non-current portion | 815.6 |
Other operating expense | 11.9 | 8.0
Letter of credit issued to various agencies | 391.9 | 366.7
Surety bonds | $ 275.7 | $ 264.4
Reclamation and remediation obligations | Minimum |  |
Provisions reconciliation |  |
Discount rate used in estimating site restoration cost obligation (in percent) | 1.70% | 2.50%
Inflation rate used in estimating the site restoration cost obligation (in percent) | 2.20% | 2.10%
Reclamation and remediation obligations | Maximum |  |
Provisions reconciliation |  |
Discount rate used in estimating site restoration cost obligation (in percent) | 14.70% | 12.30%
Inflation rate used in estimating the site restoration cost obligation (in percent) | 4.00% | 5.10%
Other |  |
Provisions reconciliation |  |
Provisions at beginning of period | $ 34.9 |
Additions | 7.2 |
Reductions | (11.7) |
Provisions at end of period | 30.4 | $ 34.9
Current portion | 7.4 |
Non-current portion | $ 23.0 |

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