3.26.1 html 34 88 1 true 5 0 false 2 false false R1.htm 0000001 - Document - Cover Sheet http://valneva.com/role/Cover Cover Cover 1 false false R2.htm 9952151 - Statement - Unaudited Interim Condensed Consolidated Statement of Profit or Loss Sheet http://valneva.com/role/UnauditedInterimCondensedConsolidatedStatementofProfitorLoss Unaudited Interim Condensed Consolidated Statement of Profit or Loss Statements 2 false false R3.htm 9952152 - Statement - Unaudited Interim Condensed Consolidated Statement of Comprehensive Income Sheet http://valneva.com/role/UnauditedInterimCondensedConsolidatedStatementofComprehensiveIncome Unaudited Interim Condensed Consolidated Statement of Comprehensive Income Statements 3 false false R4.htm 9952153 - Statement - Unaudited Interim Condensed Consolidated Statement of Cash Flows Sheet http://valneva.com/role/UnauditedInterimCondensedConsolidatedStatementofCashFlows Unaudited Interim Condensed Consolidated Statement of Cash Flows Statements 4 false false R5.htm 9952154 - Statement - Unaudited Interim Condensed Consolidated Statement of Financial Position Sheet http://valneva.com/role/UnauditedInterimCondensedConsolidatedStatementofFinancialPosition Unaudited Interim Condensed Consolidated Statement of Financial Position Statements 5 false false R6.htm 9952155 - Statement - Unaudited Interim Condensed Consolidated Statement of Cash Flows (Parenthetical) Sheet http://valneva.com/role/UnauditedInterimCondensedConsolidatedStatementofCashFlowsParenthetical Unaudited Interim Condensed Consolidated Statement of Cash Flows (Parenthetical) Statements 6 false false R7.htm 9952156 - Statement - Unaudited Interim Condensed Consolidated Statement of Changes in Equity Sheet http://valneva.com/role/UnauditedInterimCondensedConsolidatedStatementofChangesinEquity Unaudited Interim Condensed Consolidated Statement of Changes in Equity Statements 7 false false All Reports Book All Reports valn-20260331.htm valn-20260331.xsd valn-20260331_cal.xml valn-20260331_def.xml valn-20260331_lab.xml valn-20260331_pre.xml valn-20260331_g1.jpg http://xbrl.sec.gov/dei/2025 https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full true true