XML 63 R21.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Inventories, Including Long-Term Mill and Leach Stockpiles (Unaudited) (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2015
Inventories, Including Long Term Mill and Leach Stockpiles [Abstract] |
Components of inventories | The components of inventories follow (in millions):
| June 30, 2015 |  | December 31, 2014 |
Current inventories: |  |  |  |
Mill stockpiles | $ | 130 |  |  | $ | 86 |  |
Leach stockpiles | 1,803 |  |  | 1,828 |  |
Total current mill and leach stockpiles | $ | 1,933 |  |  | $ | 1,914 |  |
Total materials and supplies, net a | $ | 2,014 |  |  | $ | 1,886 |  |
Raw materials (primarily concentrates) | $ | 306 |  |  | $ | 288 |  |
Work-in-process | 155 |  |  | 174 |  |
Finished goods | 1,023 |  |  | 1,099 |  |
Total product inventories | $ | 1,484 |  |  | $ | 1,561 |  |
Long-term inventories: |  |  |  |
Mill stockpiles | $ | 361 |  |  | $ | 360 |  |
Leach stockpiles | 1,916 |  |  | 1,819 |  |
Total long-term mill and leach stockpiles b | $ | 2,277 |  |  | $ | 2,179 |  |
a. | Materials and supplies inventory was net of obsolescence reserves totaling $25 million at June 30, 2015, and $20 million at December 31, 2014.
b. | Estimated metals in stockpiles not expected to be recovered within the next 12 months.

X
- Definition Components of inventory table disclosing the major classes of inventories (such as finished goods, inventoried costs relating to long-term contracts or programs, work in process, raw materials and supplies). + References No definition available. + Details
Name: | fcx_ComponentsOfInventoriesTextBlock
Namespace Prefix: | fcx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | fcx_InventoriesIncludingLongTermMillAndLeachStockpilesAbstract
Namespace Prefix: | fcx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration