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INVENTORIES (Tables)

12 Months Ended

Dec. 31, 2019

Inventories [Abstract]

Inventories and inventory impairment charges



	Gold						Copper
	As at December 31, 2019			As at December 31, 2018			As at December 31, 2019			As at December 31, 2018
Raw materials
Ore in stockpiles		$2,794			$2,106			$155			$151
Ore on leach pads	507			405			—			—
Mine operating supplies	617			496			52			66
Work in process	141			146			—			—
Finished products	220			176			103			2
		$4,279			$3,329			$310			$219
Non-current ore in stockpiles¹	(2,300		)	(1,696		)	—			—
		$1,979			$1,633			$310			$219


¹	Ore that we do not expect to process in the next 12 months is classified within other long-term assets.



Inventory Impairment Charges
For the years ended December 31	2019			2018
Pierina		$12			$4
Carlin	6			—
Cortez	4			—
Golden Sunlight	4			10
Lagunas Norte	—			166
Lumwana	—			18
Porgera	—			1
Inventory impairment charges¹		$26			$199


¹	Impairment charges in 2018 primarily relate to stockpiles at Lagunas Norte (refer to note 21).



Ore in Stockpiles	As at December 31, 2019			As at December 31, 2018
Gold
Carlin		$1,136			$841
Pueblo Viejo	649			603
Turquoise Ridge	258			13
Cortez	174			242
Loulo-Gounkoto	167			—
North Mara	136			70
Lagunas Norte	73			49
Veladero	52			39
Buzwagi	47			83
Phoenix	39			—
Porgera	33			37
Tongon	29			—
Kalgoorlie	—			125
Other	1			4
Copper
Lumwana	155			151
		$2,949			$2,257

Ore on Leach pads	As at December 31, 2019			As at December 31, 2018
Gold
Lagunas Norte		$148			$168
Veladero	123			138
Carlin	64			—
Cortez	50			81
Phoenix	44			—
Long Canyon	43			—
Turquoise Ridge	33			—
Pierina	2			18
		$507			$405