Provisions (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Provisions

	Rehabilitation provision			Provisions for legal claims			Provisions on taxes other than income tax			Other provisions			Total
At December 31, 2015		3,704			1,572			480			215			5,971
Arising during the year		—			533			413			1,678			2,624
Utilized		(52	)		(885	)		(14	)		(118	)		(1,069	)
Revision in estimated cash flow and discount rate adjustment		(230	)		—			—			—			(230	)
Unused amounts reversed		—			(474	)		(31	)		—			(505	)
Unwinding of discount		256			—			—			—			256
Exchange differences		—			—			(88	)		(43	)		(131	)
At December 31, 2016		3,678			746			760			1,732			6,916
Current		258			746			760			1,732			3,496
Non-current		3,420			—			—			—			3,420
Arising during the year		—			2,175			23			7			2,205
Utilized		(79	)		(451	)		(1	)		(905	)		(1,436	)
Revision in estimated cash flow and discount rate adjustment		82			—			—			—			82
Unused amounts reversed		—			(180	)		(232	)		(551	)		(963	)
Unwinding of discount		311			—			—			—			311
Exchange differences		—			—			26			32			58
At December 31, 2017		3,992			2,290			576			315			7,173
Current		178			2,290			576			315			3,359
Non-current		3,814			—			—			—			3,814
Arising during the year		—			1,516			199			905			2,620
Utilized		(77	)		(273	)		—			(256	)		(606	)
Revision in estimated cash flow and discount rate adjustment		(309	)		—			—			—			(309	)
Unused amounts reversed		—			(646	)		(188	)		(20	)		(854	)
Unwinding of discount		302			—			—			—			302
Exchange differences		—			215			(4	)		4			215
At December 31, 2018		3,908			3,102			583			948			8,541
Current		189			3,102			583			948			4,822
Non-current		3,719			—			—			—			3,719