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Capital Management (Tables) | 12 Months Ended
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Dec. 31, 2020
Text block [abstract] |
Summary of Reconciliation of Net Operating Profit |
|  |  |  | 2020 |  |  | 2019 |
|  | Notes |  | US$ million |  |  | US$ million |
Total borrowings |  | 24 |  |  | 1,526.9 |  |  |  | 1,845.8 |
Add: Lease liability |  |  |  |  | 429.0 |  |  |  | 332.9 |
Less: Cash and cash equivalents |  | 21 |  |  | 886.8 |  |  |  | 515.0 |
Net debt |  |  |  |  | 1,069.1 |  |  |  | 1,663.7 |
Adjusted EBITDA |  |  |  |  | 1,910.2 |  |  |  | 1,290.2 |
Net debt to adjusted EBITDA ratio |  |  |  |  | 0.56 |  |  |  | 1.29 |
Reconciliation of profit for the year to adjusted EBITDA: |  |  |  |  |  |  |  |
Profit for the year |  |  |  |  | 745.4 |  |  |  | 174.7 |
Mining and income taxation |  |  |  |  | 432.5 |  |  |  | 175.6 |
Royalties |  |  |  |  | 105.0 |  |  |  | 73.7 |
Finance expense |  |  |  |  | 126.7 |  |  |  | 102.2 |
Investment income |  |  |  |  | (8.7 | ) |  |  | (7.3 | )
Loss on financial instruments |  |  |  |  | 238.9 |  |  |  | 238.0 |
Foreign exchange (gain)/loss |  |  |  |  | (8.6 | ) |  |  | 5.2 |
Amortisation and depreciation |  | 2 |  |  | 661.3 |  |  |  | 610.0 |
Share-based payments |  |  |  |  | 14.5 |  |  |  | 20.5 |
Long-term incentive plan |  |  |  |  | 51.3 |  |  |  | 9.1 |
Restructuring costs |  |  |  |  | 2.0 |  |  |  | 0.6 |
Silicosis settlement costs |  |  |  |  | 0.3 |  |  |  | (1.6 | )
Impairment, net of reversal of impairment of investments and assets |  |  |  |  | (50.6 | ) |  |  | 9.8 |
Loss/(profit) on disposal of assets |  |  |  |  | 0.2 |  |  |  | (1.2 | )
Share of results of equity accounted investees, net of taxation |  |  |  |  | 2.6 |  |  |  | (3.1 | )
Rehabilitation expense |  | 8 |  |  | 1.5 |  |  |  | 13.4 |
Realised loss on derivative contracts |  |  |  |  | (416.6 | ) |  |  | (132.1 | )
Tarkwa expected credit loss |  |  |  |  | 29.0 |  |  |  | — |
Salares VAT |  |  |  |  | (23.9 | ) |  |  | — |
Other |  |  |  |  | 7.4 |  |  |  | 2.7 |
Adjusted EBITDA |  |  |  |  | 1,910.2 |  |  |  | 1,290.2 |

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