v3.26.1
Provisions - Schedule of main categories of plan assets, United Kingdom (Details) - United Kingdom
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Equity instruments      
Disclosure of net defined benefit liability (asset) [line items]      
Plan assets as a percentage of total plan assets 0.00% 0.00% 0.00%
Debt instruments      
Disclosure of net defined benefit liability (asset) [line items]      
Plan assets as a percentage of total plan assets 67.00% 66.00% 62.00%
Properties      
Disclosure of net defined benefit liability (asset) [line items]      
Plan assets as a percentage of total plan assets 11.00% 14.00% 12.00%
Other      
Disclosure of net defined benefit liability (asset) [line items]      
Plan assets as a percentage of total plan assets 22.00% 20.00% 26.00%