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Provision for de-characterization of dam structures and asset retirement obligations (Tables)

12 Months Ended

Dec. 31, 2022

Provision For De-characterization Of Dam Structures And Asset Retirement Obligations

Schedule of changes in the provisions, de-characterization of dam structures located in Brazil


		2022		2021
Balance at January 1,		3,523		2,289
Additional provision		72		1,725
Disbursements		(349)		(338)
Present value valuation		(121)		(36)
Translation adjustment		253		(117)
Balance at December 31,		3,378		3,523

Current liabilities		357		451
Non-current liabilities		3,021		3,072
Liabilities		3,378		3,523

Schedule of changes in the provision of asset retirement obligations and environmental obligations


		Liability				Discount rate		Cash flow maturity
		December 31, 2022		December 31, 2021	December 31, 2022	December 31, 2021	December 31, 2022	December 31, 2021
Liability by geographical area
Brazil		1,788		1,398	6.20%	5.48%	2096	2119
Canada		1,683		2,727	1.11%	0.00%	2148	2151
Oman		114		123	3.90%	3.03%	2035	2035
Indonesia		73		77	4.33%	4.20%	2061	2061
Other regions		145		255	1.84% - 2.00%	0.00% – 0.57%
		3,803		4,580

Provision changes during the year

Provision changes during
	2022						2021
	Asset retirement obligations		Environmental obligations		Total		Asset retirement obligations		Environmental obligations		Total
Balance at January 1,	4,283		297		4,580		4,220		302		4,522
Adjustment to present value	20		7		27		110		19		129
Disbursements	(101)		(26)		(127)		(88)		(57)		(145)
Revisions on projected cash flows (i)	(646)		46		(600)		178		49		227
Transfer to assets held for sale	(49)		(2)		(51)		(50)		-		(50)
Translation adjustment	(41)		15		(26)		(87)		(16)		(103)
Balance at December, 31	3,466		337		3,803		4,283		297		4,580
Current	210		94		304		72		98		170
Non-current	3,256		243		3,499		4,211		199		4,410
Liability	3,466		337		3,803		4,283		297		4,580

(i)	Among other factors, includes the reduction in liability of US$870, due to the update in the discount rate of the asset retirement obligation in Canada, which increased from 0.00% to 1.11% for the year ended December 31, 2022.

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Provision changes during
	2022						2021
	Asset retirement obligations		Environmental obligations		Total		Asset retirement obligations		Environmental obligations		Total
Balance at January 1,	4,283		297		4,580		4,220		302		4,522
Adjustment to present value	20		7		27		110		19		129
Disbursements	(101)		(26)		(127)		(88)		(57)		(145)
Revisions on projected cash flows (i)	(646)		46		(600)		178		49		227
Transfer to assets held for sale	(49)		(2)		(51)		(50)		-		(50)
Translation adjustment	(41)		15		(26)		(87)		(16)		(103)
Balance at December, 31	3,466		337		3,803		4,283		297		4,580
Current	210		94		304		72		98		170
Non-current	3,256		243		3,499		4,211		199		4,410
Liability	3,466		337		3,803		4,283		297		4,580

(i)	Among other factors, includes the reduction in liability of US$870, due to the update in the discount rate of the asset retirement obligation in Canada, which increased from 0.00% to 1.11% for the year ended December 31, 2022.