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

12 Months Ended

Dec. 31, 2021

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


	December 31, 2021	December 31, 2020
Balance at January 1,	2,289	2,489
Additional provision	1,725	617
Disbursements	(338)	(293)
Present value valuation	(36)	36
Translation adjustment	(117)	(560)
Balance at December 31,	3,523	2,289

Current liabilities	451	381
Non-current liabilities	3,072	1,908
Liabilities	3,523	2,289

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


	December 31, 2021	December 31, 2020	Discount rate		Flow duration
Liability by geographical area
Brazil	1,398	1,530	5.48	%	2,119
Canada	2,727	2,491	0.00	%	2,151
Oman	123	105	3.03	%	2,035
Indonesia	77	60	4.20	%	2,061
Other regions	255	336	0.00 - 7.79	%
	4,580	4,522

Provision changes during the year


	December 31, 2021	December 31, 2020
Asset retirement obligations
Balance at beginning of the year	4,220	3,960
Adjustment to present value	110	27
Disbursements	(88)	(45)
Revisions on projected cash flows (i)	178	509
Transfer to assets held for sale (note 16)	(50)	—
Translation adjustment	(87)	(231)
Balance at end of the year	4,283	4,220

Environmental obligations
Balance at beginning of the year	302	389
Adjustment to present value	19	6
Disbursements	(57)	(61)
Revisions on projected cash flows	49	48
Translation adjustment	(16)	(80)
Balance at end of the year	297	302
Liability	4,580	4,522

Current	170	201
Non-current	4,410	4,321
Liability	4,580	4,522

(i)Includes US$121 related to the decommissioning of the water structure of the base metals operations in Canada recorded in income for the year ended December 31, 2021 as "Other operating expenses" (note 5) and US$57 capitalized as part of property, plant, and equipment (note 18). In 2020, the total amount was US$312 referring to the decommissioning of base metals infrastructure in Canada of US$151 and iron ore in Brazil of US$161.