Other Non-Current Assets (Tables)

12 Months Ended

Dec. 31, 2017

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Summary of Other Non-Current Assets

	At December 31 2017		At December 31 2016
Sales/indirect taxes recoverable	$	62	$	105
Water rights (note 7(a))		59		—
Exploration tax credits and mining duties		44		35
Deposits on mining interest expenditures		7		9
Non-current derivative assets not designated cash flow hedges		1		7
Other		16		10
	$	189	$	166