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Material accounting policies - Narrative (Details)	Dec. 31, 2025
Contributions paid as from 2016
Minimum guaranteed return	1.75%
Maximum guaranteed return	3.75%
Contributions paid until 2015
Minimum guaranteed return employer contributions	3.25%
Minimum guaranteed return employee contributions	3.75%

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The amount relating to maximum guaranteed returns.

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The amount of minimum guaranteed return.

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