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v3.20.1

Business Segments (Product Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Revenue from External Customer [Line Items] |  |
Treatment And Refining Charges Included In Copper Concentrates Revenues | $ (80) | $ (105)
Royalty Expense | (20) | (30)
Export duties expense | (4) | (17)
Revenue from Contract with Customer, Excluding Assessed Tax | 3,029 | 3,672
Revenues | 2,798 | 3,792
Sales [Member] | Not Designated as Hedging Instrument [Member] |  |
Revenue from External Customer [Line Items] |  |
Matured derivative financial instruments | (231) | 120
Copper In Concentrates [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 849 | 1,165
Copper Cathode [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 837 | 859
Refined Copper Products [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 542 | 507
Purchased Copper [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 235 | 337
Gold |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 270 | 391
Molybdenum |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 243 | 288
Other Products Or Services [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 157 | $ 277

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