BUSINESS SEGMENTS (Mine Production and Purchase Percentages) (Details)	12 Months Ended
	Dec. 31, 2013
Morenci [Member]
Mining Segment Reporting Information [Line Items]
Percentage of Division's Copper Production	39.00%
Cerro Verde [Member]
Mining Segment Reporting Information [Line Items]
Percentage of Division's Copper Production	42.00%
Candelaria [Member]
Mining Segment Reporting Information [Line Items]
Percentage of Division's Copper Production	28.00%
South America [Member]
Mining Segment Reporting Information [Line Items]
Percentage of Atlantic Copper's annual concentrate requirements purchased from intercompany	32.00%
Indonesia [Member]
Mining Segment Reporting Information [Line Items]
Percentage of Atlantic Copper's annual concentrate requirements purchased from intercompany	16.00%
North America Copper Mines Segment [Member]
Mining Segment Reporting Information [Line Items]
Percentage of Atlantic Copper's annual concentrate requirements purchased from intercompany	13.00%
PT Smelting [Member]
Mining Segment Reporting Information [Line Items]
Deferred Intercompany Profit, Percentage	25.00%