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Provisions (Tables)

12 Months Ended

Dec. 31, 2018

Provisions [Abstract]

Roll Forward of provisions for reclamation and waste disposal



		Reclamation		Waste disposal				Total


Beginning of year		$	905,400		$	8,140		$	913,540
Changes in estimates and discount rates [note 8]
	Capitalized in property, plant and equipment		72,701			-			72,701
	Recognized in earnings		59,616			1,690			61,306
Change to equity accounting [note 11]			(3,049)			-			(3,049)
Provisions used during the period			(30,771)			(540)			(31,311)
Unwinding of discount [note 19]			23,511			170			23,681
Effect of movements in exchange rates			26,484			-			26,484

End of period		$	1,053,892		$	9,460		$	1,063,352


Current		$	51,171		$	1,145		$	52,316
Non-current			1,002,721			8,315			1,011,036

		$	1,053,892		$	9,460		$	1,063,352

Reclamation provisions


		2018			2017


Uranium	$	828,781		$	669,835
Fuel services		225,111			235,565

Total	$	1,053,892		$	905,400