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Contingencies and Commitments - Litigation (Details) - Settled litigation $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) litigation
FCX affiliates |
Loss Contingencies [Line Items] |
Loss Contingency, Pending Claims, Number | 13
Louisiana Parishes Coastal Erosion Cases |
Loss Contingencies [Line Items] |
Loss Contingency, Pending Claims, Number | 42
Louisiana Parishes Coastal Erosion Cases | FCX affiliates |
Loss Contingencies [Line Items] |
Loss Contingency, Pending Claims, Number | 13
Charges for Cerro Verde royalty dispute | $ | $ 15
Litigation settlement, agreed to pay, initial payment | $ | $ 15

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- Definition Litigation Settlement, Amount Awarded to Other Party, Initial Payment + References No definition available. + Details
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Period Type: | duration

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- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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Balance Type: |
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