| Property, plant and equipment [Text Block] |
14. Property, plant and equipment
| Dec. 31, 2025 |
|
Exploration
and
evaluation
assets
|
|
|
Capital
works in
progress
|
|
|
Mining
properties
|
|
|
Plant and
equipment
|
|
|
Plant and
equipment
- ROU
assets1
|
|
|
Total |
|
| Balance, Jan. 1, 2025 |
$ |
103.4 |
|
$ |
863.9 |
|
$ |
2,578.3 |
|
$ |
3,345.3 |
|
$ |
255.1 |
|
$ |
7,146.0 |
|
| Additions |
|
5.2 |
|
|
285.6 |
|
|
23.4 |
|
|
68.4 |
|
|
17.7 |
|
|
400.3 |
|
| Capitalized stripping and development |
|
- |
|
|
- |
|
|
182.2 |
|
|
- |
|
|
- |
|
|
182.2 |
|
| Decommissioning and restoration |
|
- |
|
|
0.3 |
|
|
(0.9 |
) |
|
0.4 |
|
|
- |
|
|
(0.2 |
) |
| Capitalized accretion and depreciation |
|
- |
|
|
2.0 |
|
|
- |
|
|
- |
|
|
(2.0 |
) |
|
- |
|
| Transfers and other movements |
|
- |
|
|
(117.5 |
) |
|
3.7 |
|
|
108.2 |
|
|
5.6 |
|
|
- |
|
| Disposals |
|
(1.1 |
) |
|
(0.6 |
) |
|
- |
|
|
(13.4 |
) |
|
(5.0 |
) |
|
(20.1 |
) |
| Impairment reversal (note 6f) |
|
- |
|
|
322.3 |
|
|
- |
|
|
- |
|
|
- |
|
|
322.3 |
|
| Effects of movements in exchange rates |
|
1.4 |
|
|
3.8 |
|
|
55.9 |
|
|
58.3 |
|
|
2.1 |
|
|
121.5 |
|
| Balance, Dec. 31, 2025 |
|
108.9 |
|
|
1,359.8 |
|
|
2,842.6 |
|
|
3,567.2 |
|
|
273.5 |
|
|
8,152.0 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Accumulated depreciation |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Balance, Jan. 1, 2025 |
|
- |
|
|
- |
|
|
1,274.4 |
|
|
1,524.6 |
|
|
165.6 |
|
|
2,964.6 |
|
| Depreciation for the year |
|
- |
|
|
- |
|
|
225.2 |
|
|
208.0 |
|
|
28.9 |
|
|
462.1 |
|
| Disposals |
|
- |
|
|
- |
|
|
- |
|
|
(10.0 |
) |
|
(4.0 |
) |
|
(14.0 |
) |
| Effects of movement in exchange rates |
|
- |
|
|
- |
|
|
23.4 |
|
|
21.1 |
|
|
0.9 |
|
|
45.4 |
|
| Balance, Dec. 31, 2025 |
|
- |
|
|
- |
|
|
1,523.0 |
|
|
1,743.7 |
|
|
191.4 |
|
|
3,458.1 |
|
| Net book value |
$ |
108.9 |
|
$ |
1,359.8 |
|
$ |
1,319.6 |
|
$ |
1,823.5 |
|
$ |
82.1 |
|
$ |
4,693.9 |
|
| 1 Includes $5.3 million of capital works in progress - ROU assets (costs) that relate to the Arizona business unit |
| Dec. 31, 2024 |
|
Exploration
and
evaluation
assets
|
|
|
Capital
works in
progress
|
|
|
Mining
properties
|
|
|
Plant and
equipment
|
|
|
Plant and
equipment-
ROU
assets1
|
|
|
Total |
|
| Balance, Jan. 1, 2024 |
$ |
96.9 |
|
$ |
804.6 |
|
$ |
2,482.7 |
|
$ |
3,274.2 |
|
$ |
243.5 |
|
$ |
6,901.9 |
|
| Additions |
|
8.6 |
|
|
239.4 |
|
|
14.5 |
|
|
37.7 |
|
|
25.5 |
|
|
325.7 |
|
| Capitalized stripping and development |
|
- |
|
|
- |
|
|
160.5 |
|
|
- |
|
|
- |
|
|
160.5 |
|
| Decommissioning and restoration |
|
- |
|
|
- |
|
|
13.5 |
|
|
(18.2 |
) |
|
- |
|
|
(4.7 |
) |
| Capitalized accretion and depreciation |
|
- |
|
|
2.2 |
|
|
- |
|
|
- |
|
|
(1.6 |
) |
|
0.6 |
|
| Transfers and other movements |
|
- |
|
|
(168.4 |
) |
|
(3.7 |
) |
|
174.6 |
|
|
(2.5 |
) |
|
- |
|
| Disposals |
|
- |
|
|
(11.9 |
) |
|
- |
|
|
(23.7 |
) |
|
(6.4 |
) |
|
(42.0 |
) |
| Effects of movements in exchange rates |
|
(2.1 |
) |
|
(2.0 |
) |
|
(89.2 |
) |
|
(99.3 |
) |
|
(3.4 |
) |
|
(196.0 |
) |
| Balance, Dec. 31, 2024 |
|
103.4 |
|
|
863.9 |
|
|
2,578.3 |
|
|
3,345.3 |
|
|
255.1 |
|
|
7,146.0 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Accumulated depreciation |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Balance, Jan. 1, 2024 |
|
- |
|
|
- |
|
|
1,093.9 |
|
|
1,348.9 |
|
|
143.1 |
|
|
2,585.9 |
|
| Depreciation for the year |
|
- |
|
|
- |
|
|
216.0 |
|
|
216.8 |
|
|
24.0 |
|
|
456.8 |
|
| Disposals |
|
- |
|
|
- |
|
|
- |
|
|
(9.4 |
) |
|
(1.0 |
) |
|
(10.4 |
) |
| Effects of movement in exchange rates |
|
- |
|
|
- |
|
|
(35.5 |
) |
|
(31.7 |
) |
|
(0.5 |
) |
|
(67.7 |
) |
| Balance, Dec. 31, 2024 |
|
- |
|
|
- |
|
|
1,274.4 |
|
|
1,524.6 |
|
|
165.6 |
|
|
2,964.6 |
|
| Net book value |
$ |
103.4 |
|
$ |
863.9 |
|
$ |
1,303.9 |
|
$ |
1,820.7 |
|
$ |
89.5 |
|
$ |
4,181.4 |
|
1 Includes $3.8 million of capital works in progress - ROU assets (costs) that relate to the Arizona business unit.
On a quarterly basis, management assesses for internal and external indicators of impairment and impairment reversal. During the third quarter of 2025, management identified Mitsubishi's agreement to acquire a 30% interest of Copper World to be an indicator of impairment reversal for Arizona CGU.
As a result, a $322.3 million full reversal of the previously recorded impairment was recorded, as the recoverable amount of the Arizona CGU exceeded the current carrying value (note 6f).
|