Other employee benefits (Tables)
|
12 Months Ended |
Dec. 31, 2025 |
|---|
| Other Employee Benefits [Abstract] |
|
| Disclosure of detailed information about other employee benefit plans [Table Text Block] |
| |
|
Year ended |
|
| |
|
Dec. 31, 2025 |
|
|
Dec. 31, 2024 |
|
| Opening defined benefit obligation |
$ |
81.5 |
|
$ |
103.2 |
|
| Current service cost1 |
|
1.8 |
|
|
2.8 |
|
| Past service cost |
|
- |
|
|
1.6 |
|
| Interest cost |
|
3.8 |
|
|
4.5 |
|
| Benefits paid |
|
(2.8 |
) |
|
(2.9 |
) |
| Remeasurement actuarial (gain)/loss: |
|
|
|
|
|
|
| Arising from changes in demographic assumptions |
|
- |
|
|
(12.8 |
) |
| Arising from changes in financial assumptions |
|
(4.4 |
) |
|
(1.2 |
) |
| Arising from experience adjustments |
|
(0.4 |
) |
|
(5.3 |
) |
| Effects of movements in exchange rates |
|
4.1 |
|
|
(8.4 |
) |
| Closing defined benefit obligation |
$ |
83.6 |
|
$ |
81.5 |
|
|
| Disclosure of detailed information about other employee benefit plans, balance by member group [Table Text Block] |
| |
|
Dec. 31, 2025 |
|
|
Dec. 31, 2024 |
|
| Active members |
$ |
26.6 |
|
$ |
26.7 |
|
| Inactive members |
|
57.0 |
|
|
54.8 |
|
| Closing defined benefit obligation |
$ |
83.6 |
|
$ |
81.5 |
|
|
| Disclosure of detailed information about changes in fair value of assets of other employee benefits plan [Table Text Block] |
| |
|
Dec. 31, 2025 |
|
|
Dec. 31, 2024 |
|
| Employer contributions |
$ |
2.8 |
|
$ |
2.9 |
|
| Benefits paid |
|
(2.8 |
) |
|
(2.9 |
) |
| Closing fair value of assets |
$ |
- |
|
$ |
- |
|
|
| Disclosure of detailed information about net benefit liability for other employee benefits [Table Text Block] |
| |
|
Dec. 31, 2025 |
|
|
Dec. 31, 2024 |
|
| Unfunded benefit obligation |
$ |
83.6 |
|
$ |
81.5 |
|
| Vacation accrual and other - non-current |
|
2.4 |
|
|
2.3 |
|
| Net liability |
$ |
86.0 |
|
$ |
83.8 |
|
|
| Disclosure of detailed information about other employee benefits plan [Table Text Block] |
| |
|
Dec. 31, 2025 |
|
|
Dec. 31, 2024 |
|
| Other employee benefits liability - current (note 16) |
$ |
3.6 |
|
$ |
3.5 |
|
| Other employee benefits liability - non-current |
|
82.4 |
|
|
80.3 |
|
| Net liability |
$ |
86.0 |
|
$ |
83.8 |
|
|
| Disclosure of detailed information about employee future benefit expense [Table Text Block] |
| |
|
Dec. 31, 2025 |
|
|
Dec. 31, 2024 |
|
| Current service cost 1 |
$ |
1.8 |
|
$ |
2.8 |
|
| Past service cost |
|
- |
|
|
1.6 |
|
| Net interest cost |
|
3.8 |
|
|
4.5 |
|
| Components recognized in consolidated statements of income |
$ |
5.6 |
|
$ |
8.9 |
|
|
| Disclosure of detailed information about remeasurement of other long term employee benefits [Table Text Block] |
| |
|
Dec. 31, 2025 |
|
|
Dec. 31, 2024 |
|
| Remeasurement on the net defined benefit liability: |
|
|
|
|
|
|
| Actuarial gain arising from changes in demographic assumptions |
$ |
- |
|
$ |
(12.8 |
) |
| Actuarial gain arising from changes in financial assumptions |
|
(4.4 |
) |
|
(1.2 |
) |
| Actuarial gain arising from changes experience adjustments |
|
(0.4 |
) |
|
(5.3 |
) |
| Components recognized in statements of comprehensive income |
$ |
(4.8 |
) |
$ |
(19.3 |
) |
| |
|
|
|
|
|
|
| Total other employee future benefit expense / (income) |
$ |
0.8 |
|
$ |
(10.4 |
) |
|
| Disclosure of detailed information about other employee benefit plan, assumptions used [Table Text Block] |
| |
Dec. 31, 2025 |
Dec. 31, 2024 |
| Defined benefit cost: |
|
|
| Discount rate |
4.74% |
4.64% |
| Initial weighted average health care trend rate |
5.67% |
5.82% |
| Ultimate weighted average health care trend rate |
4.00% |
4.00% |
| Average longevity at retirement age for current pensioners (years)1 : |
|
|
| Males |
20.6 |
20.5 |
| Females |
24.0 |
23.9 |
| |
Dec. 31, 2025 |
Dec. 31, 2024 |
| Defined benefit obligation: |
|
|
| Discount rate |
5.05% |
4.74% |
| Initial weighted average health care trend rate |
5.59% |
5.67% |
| Ultimate weighted average health care trend rate |
4.00% |
4.00% |
| Average longevity at retirement age for current pensioners (years)1 : |
|
|
| Males |
20.7 |
20.6 |
| Females |
24.0 |
24.0 |
| Average longevity at retirement age for current employees (future pensioners) (years)1 : |
|
|
| Males |
22.5 |
22.5 |
| Females |
25.7 |
25.6 |
|