|
|
|
2017 |
|
||||||||||||||||||
|
|
|
|
|
|
|
Machinery, |
|
|
|
|
|
Assets and |
|
|
|
|
|
|
|
|
|
|
|
|
Land and |
|
Dam and |
|
equipment and |
|
|
|
Furniture and |
|
projects under |
|
Asset retirement |
|
|
|
|
|
|
|
|
|
|
improvements |
|
buildings |
|
facilities |
|
Vehicles |
|
fixtures |
|
construction |
|
obligation (ARO ) |
|
Mining projects |
|
Other |
|
Total |
|
|
Balance at the beginning of the year |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cost |
|
24.036 |
|
980.242 |
|
2.466.265 |
|
22.263 |
|
6.895 |
|
219.254 |
|
132.824 |
|
271.466 |
|
7.345 |
|
4.130.590 |
|
|
Accumulated depreciation |
|
(257 |
) |
(435.372 |
) |
(1.485.939 |
) |
(20.440 |
) |
(4.443 |
) |
— |
|
(96.108 |
) |
(102.828 |
) |
(6.741 |
) |
(2.152.128 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net balance |
|
23.779 |
|
544.870 |
|
980.326 |
|
1.823 |
|
2.452 |
|
219.254 |
|
36.716 |
|
168.638 |
|
604 |
|
1.978.462 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Acquisitions |
|
46 |
|
100 |
|
5.761 |
|
272 |
|
307 |
|
185.688 |
|
4.303 |
|
240 |
|
— |
|
196.717 |
|
|
Disposals |
|
(930 |
) |
(92 |
) |
(2.915 |
) |
|
|
(121 |
) |
(6.917 |
) |
— |
|
— |
|
(7 |
) |
(10.982 |
) |
|
Depreciation |
|
(22 |
) |
(34.175 |
) |
(142.519 |
) |
(1.174 |
) |
(509 |
) |
— |
|
(5.834 |
) |
(11.121 |
) |
(83 |
) |
(195.437 |
) |
|
Exchange variation losses |
|
(231 |
) |
(4.309 |
) |
(6.381 |
) |
(101 |
) |
(9 |
) |
(3.965 |
) |
(1.839 |
) |
(2.115 |
) |
(8 |
) |
(18.958 |
) |
|
Transfers |
|
1.573 |
|
71.152 |
|
83.297 |
|
2.236 |
|
131 |
|
(158.559 |
) |
— |
|
2.841 |
|
— |
|
2.671 |
|
|
Cost and interest revision |
|
— |
|
— |
|
— |
|
— |
|
— |
|
— |
|
43.789 |
|
— |
|
— |
|
43.789 |
|
|
Transfers of assets held for sale |
|
— |
|
— |
|
252 |
|
— |
|
— |
|
— |
|
— |
|
— |
|
— |
|
252 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Balance at the end of the year |
|
24.215 |
|
577.546 |
|
917.821 |
|
3.056 |
|
2.251 |
|
235.501 |
|
77.135 |
|
158.483 |
|
506 |
|
1.996.514 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cost |
|
24.490 |
|
1.030.686 |
|
2.422.254 |
|
21.135 |
|
6.743 |
|
235.501 |
|
178.662 |
|
243.938 |
|
7.177 |
|
4.170.586 |
|
|
Accumulated depreciation |
|
(275 |
) |
(453.140 |
) |
(1.504.433 |
) |
(18.079 |
) |
(4.492 |
) |
— |
|
(101.527 |
) |
(85.455 |
) |
(6.671 |
) |
(2.174.072 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net balance at the end of the year |
|
24.215 |
|
577.546 |
|
917.821 |
|
3.056 |
|
2.251 |
|
235.501 |
|
77.135 |
|
158.483 |
|
506 |
|
1.996.514 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Average annual depreciation rates - % |
|
— |
|
4 |
|
7 |
|
24 |
|
10 |
|
— |
|
5 |
|
8 |
|
— |
|
— |
|
|
|
|
|
|
|
|
Machinery, |
|
|
|
|
|
Assets and |
|
|
|
|
|
|
|
|
|
|
|
|
Land and |
|
Dam and |
|
equipment and |
|
|
|
Furniture and |
|
projects under |
|
Asset retirement |
|
|
|
|
|
|
|
|
|
|
improvements |
|
buildings |
|
facilities |
|
Vehicles |
|
fixtures |
|
construction |
|
obligation (ARO) |
|
Mining projects |
|
Other |
|
Total |
|
|
Balance at the beginning of the year |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cost |
|
20,657 |
|
816,001 |
|
2,223,583 |
|
20,551 |
|
6,278 |
|
206,094 |
|
116,695 |
|
246,208 |
|
6,079 |
|
3,662,146 |
|
|
Accumulated depreciation |
|
(85 |
) |
(332,034 |
) |
(1,259,830 |
) |
(18,066 |
) |
(3,441 |
) |
— |
|
(74,229 |
) |
(85,544 |
) |
(5,563 |
) |
(1,778,792 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net balance |
|
20,572 |
|
483,967 |
|
963,753 |
|
2,485 |
|
2,837 |
|
206,094 |
|
42,466 |
|
160,664 |
|
516 |
|
1,883,354 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Acquisitions |
|
— |
|
— |
|
489 |
|
|
|
2 |
|
151,302 |
|
148 |
|
28,915 |
|
— |
|
180,856 |
|
|
Disposals |
|
(46 |
) |
(593 |
) |
(1,525 |
) |
(95 |
) |
(37 |
) |
(42 |
) |
— |
|
(11,000 |
) |
(1 |
) |
(13,339 |
|
|
Depreciation |
|
(20 |
) |
(31,145 |
) |
(145,450 |
) |
(1,487 |
) |
(477 |
) |
— |
|
(7,301 |
) |
(14,096 |
) |
(67 |
) |
(200,043 |
|
|
Reversal of provision for asset impairment (i) |
|
|
|
|
|
|
|
|
|
|
|
979 |
|
|
|
|
|
|
|
979 |
|
|
Exchange variation gains |
|
2,274 |
|
38,640 |
|
64,510 |
|
259 |
|
43 |
|
16,987 |
|
4,589 |
|
2,652 |
|
139 |
|
130,093 |
|
|
Transfers |
|
999 |
|
54,001 |
|
98,801 |
|
661 |
|
84 |
|
(156,066 |
) |
|
|
1,503 |
|
17 |
|
|
|
|
Cash flow review and restatement of interest rates |
|
— |
|
— |
|
— |
|
— |
|
— |
|
— |
|
(3,186 |
) |
— |
|
— |
|
(3,186 |
) |
|
Assets transferred to held for sale |
|
— |
|
— |
|
(252 |
) |
— |
|
— |
|
— |
|
— |
|
— |
|
— |
|
(252 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Balance at the end of the year |
|
23,779 |
|
544,870 |
|
980,326 |
|
1,823 |
|
2,452 |
|
219,254 |
|
36,716 |
|
168,638 |
|
604 |
|
1,978,462 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cost |
|
24,036 |
|
980,242 |
|
2,466,265 |
|
22,263 |
|
6,895 |
|
219,254 |
|
132,824 |
|
271,466 |
|
7,345 |
|
4,130,590 |
|
|
Accumulated depreciation |
|
(257 |
) |
(435,372 |
) |
(1,485,939 |
) |
(20,440 |
) |
(4,443 |
) |
— |
|
(96,108 |
) |
(102,828 |
) |
(6,741 |
) |
(2,152,128 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net balance at the end of he year |
|
23,779 |
|
544,870 |
|
980,326 |
|
1,823 |
|
2,452 |
|
219,254 |
|
36,716 |
|
168,638 |
|
604 |
|
1,978,462 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Average annual depreciation rates -% |
|
— |
|
4 |
|
7 |
|
21 |
|
11 |
|
— |
|
7 |
|
8 |
|
— |
|
— |
|
(i)The Company assesses at each balance sheet date whether there is objective evidence that any item of property, plant and equipment is impaired. No impairment was identified during 2017.