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CONSOLIDATED FINANCIAL STATEMENT DETAILS - Other long-term assets (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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CONSOLIDATED FINANCIAL STATEMENT DETAILS |  |
Long-term portion of ore in stockpiles and ore on leach pads | $ 309.8 | $ 303.3
Deferred charges, net of amortization | 6.0 | 32.5
Long-term receivables | 124.1 | 171.0
Advances for the purchase of capital equipment | 9.1 | 15.1
Restricted cash | 25.0 |
Unrealized fair value of derivative assets | 10.5 | 4.5
Other | 52.7 | 46.3
Total other long-term assets | $ 537.2 | $ 572.7

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