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INVENTORIES, INCLUDING LONG-TERM MILL AND LEACH STOCKPILES (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory, Noncurrent

The components of inventories follow:

	December 31,
	2016				2015
Current inventories:
Total materials and supplies, neta	$	1,306			$	1,575
Mill stockpiles	$	259			$	137
Leach stockpiles	1,079				1,402
Total current mill and leach stockpiles	$	1,338			$	1,539
Raw materials (primarily concentrate)	$	255			$	220
Work-in-process	114				108
Finished goods	629				633
Total product inventories	$	998			$	961
Long-term inventories:
Mill stockpiles	$	487			$	480
Leach stockpiles	1,146				1,183
Total long-term inventoriesb	$	1,633			$	1,663

a. Materials and supplies inventory was net of obsolescence reserves totaling $29 million at December 31, 2016, and $26 million at December 31, 2015.

b. Estimated metals in stockpiles not expected to be recovered within the next 12 months.

Components of Inventories

The components of inventories follow:

	December 31,
	2016				2015
Current inventories:
Total materials and supplies, neta	$	1,306			$	1,575
Mill stockpiles	$	259			$	137
Leach stockpiles	1,079				1,402
Total current mill and leach stockpiles	$	1,338			$	1,539
Raw materials (primarily concentrate)	$	255			$	220
Work-in-process	114				108
Finished goods	629				633
Total product inventories	$	998			$	961
Long-term inventories:
Mill stockpiles	$	487			$	480
Leach stockpiles	1,146				1,183
Total long-term inventoriesb	$	1,633			$	1,663

a. Materials and supplies inventory was net of obsolescence reserves totaling $29 million at December 31, 2016, and $26 million at December 31, 2015.

b. Estimated metals in stockpiles not expected to be recovered within the next 12 months.

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Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Topic 210
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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure of inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle including inventoried costs relating to long-term contracts or programs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(c))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
-Subparagraph (SX 210.5-02(6)(d))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02(6)(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02(6)(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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