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IMPAIRMENT LOSS ON MEADOWBANK MINE (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012
Property, Plant and Mine Development
Impairment loss on Meadowbank mine (note 18)	$ 907,681
Property, plant and mine development book value	3,895,355	4,067,456
Meadowbank mine
Property, Plant and Mine Development
Impairment loss on Meadowbank mine (note 18)	907,681
Property, plant and mine development book value		$ 1,700,000
Percentage of average gold recovery		92.90%
Percentage of Interest rate used to calculated fair value by discounting the estimated future net cash flows		5.00%
Meadowbank mine \| Minimum
Property, Plant and Mine Development
Long-term gold prices (in dollars per ounce)		1,250
Foreign exchange rate		0.92
Meadowbank mine \| Maximum
Property, Plant and Mine Development
Long-term gold prices (in dollars per ounce)		1,553
Foreign exchange rate		0.97

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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