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v3.19.1

Business Segments (Product Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Revenue from External Customer [Line Items] |  |
Treatment And Refining Charges Included In Copper Concentrates Revenues | $ (105) | $ (132)
Royalty Expense | (30) | (69)
Export Duties Expense | (17) | (46)
Revenue from Contract with Customer, Excluding Assessed Tax | 3,672 | 4,985
Revenues | 3,792 | 4,868
Copper In Concentrates [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 1,165 | 1,647
Copper Cathode [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 859 | 1,185
Refined Copper Products [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 507 | 670
Purchased Copper [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 337 | 238
Gold |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 391 | 808
Molybdenum [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 288 | 286
Other Products Or Services [Member] |  |
Revenue from External Customer [Line Items] |  |
Revenue from Contract with Customer, Including Assessed Tax | 277 | 398
Sales [Member] | Not Designated as Hedging Instrument [Member] |  |
Revenue from External Customer [Line Items] |  |
Matured derivative financial instruments | $ 120 | $ (117)

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