The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Pension obligations (Schedule of additional information about defined benefit plans, balance by member group) - (Details) - Pension obligations [Member] - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Obligations [Line Items]
Closing defined benefit obligation	$ 102.9	$ 101.4	$ 115.3
Active members [Member]
Pension Obligations [Line Items]
Closing defined benefit obligation	84.8	88.4
Deferred members [Member]
Pension Obligations [Line Items]
Closing defined benefit obligation	4.0	2.8
Retired members [Member]
Pension Obligations [Line Items]
Closing defined benefit obligation	$ 14.1	$ 10.2