Other financial assets - Additional information (Details 2) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Coral FLNG SA
Other financial assets
Proportion of ownership interest in associate	25.00%
Mozambique Rovuma Venture SpA
Other financial assets
Proportion of ownership interest in joint venture (as a percent)	35.71%
Non-current financing receivables held for operating purposes \| Minimum
Other financial assets
Discount rate applied to cash flow projections (as a percent)	1.90%	1.70%
Non-current financing receivables held for operating purposes \| Maximum
Other financial assets
Discount rate applied to cash flow projections (as a percent)	4.80%	4.80%
Securities held for operating purposes \| Maximum
Other financial assets
Maturity of securities held for operating purposes	5 years
Securities held for operating purposes \| Within 5 years
Other financial assets
Amortized cost	€ 49

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