Segment Information (Narrative) (Details) - segment |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
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Concentration Risk [Line Items] | ||||
Number of reportable operating segments | 2 | |||
Sales Revenue, Net [Member] | Glencore U.K. [Member] | Gabon Segment [Member] | ||||
Concentration Risk [Line Items] | ||||
Concentration Risk, Percentage | 100.00% | 100.00% | 100.00% | 100.00% |
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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. No definition available.
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
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