CONSOLIDATED FINANCIAL STATEMENT DETAILS - Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Inventories:
Ore in stockpiles	$ 277.4	$ 300.3
Ore on leach pads	498.8	384.7
In-process	108.0	99.2
Finished metal	50.3	52.3
Materials and supplies	448.2	520.6
Inventories, subtotal	1,382.7	1,357.1
Long-term portion of ore in stockpiles and ore on leach pads	(309.8)	(303.3)
Total inventories	$ 1,072.9	$ 1,053.8

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A classification of current inventory representing the amount of ore stockpiles. [Refer: Inventories]

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A classification of current inventory representing the amount of current raw materials and current production supplies. [Refer: Current production supplies; Current raw materials]

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A classification of current inventory representing the amount of goods that have completed the production process and are held for sale in the ordinary course of business. [Refer: Inventories]

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The amount of current inventories. [Refer: Inventories]

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The amount of assets: (a) held for sale in the ordinary course of business; (b) in the process of production for such sale; or (c) in the form of materials or supplies to be consumed in the production process or in the rendering of services. Inventories encompass goods purchased and held for resale including, for example, merchandise purchased by a retailer and held for resale, or land and other property held for resale. Inventories also encompass finished goods produced, or work in progress being produced, by the entity and include materials and supplies awaiting use in the production process. [Refer: Current finished goods; Current merchandise; Current work in progress; Land]

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The amount of inventory that the entity does not separately disclose in the same statement or note. [Refer: Inventories]

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