| Cover Page | 9 Months Ended |
| Sep. 30, 2023 | |
| Cover [Abstract] | |
| Document Type | 6-K |
| Entity Registrant Name | Valneva SE |
| Amendment Flag | false |
| Entity Central Index Key | 0001836564 |
| Current Fiscal Year End Date | --12-31 |
| Document Period End Date | Sep. 30, 2023 |
| Document Fiscal Year Focus | 2023 |
| Document Fiscal Period Focus | Q3 |
| Unaudited Interim Condensed Consolidated Statements of Income (Loss) - EUR (€) € in Thousands | 9 Months Ended | |
| Sep. 30, 2023 | Sep. 30, 2022 | |
| Profit or loss [abstract] | ||
| Product sales | € 106,130 | € 74,421 |
| Other revenues | 5,684 | 175,481 |
| REVENUES | 111,814 | 249,902 |
| Cost of goods and services | (74,810) | (202,726) |
| Research and development expenses | (42,220) | (75,385) |
| Marketing and distribution expenses | (33,919) | (13,089) |
| General and administrative expenses | (35,066) | (23,267) |
| Other income and expenses, net | 17,020 | 7,472 |
| OPERATING PROFIT/(LOSS) | (57,180) | (57,093) |
| Finance income | 724 | 59 |
| Finance expenses | (12,477) | (13,395) |
| Foreign exchange gain/(loss), net | (1,441) | (26,492) |
| Result from investments in associates | 0 | 9 |
| PROFIT/(LOSS) BEFORE INCOME TAX | (70,374) | (96,912) |
| Income tax benefit/(expense) | 1,103 | (2,163) |
| PROFIT/(LOSS) FOR THE PERIOD | € (69,271) | € (99,075) |
| Earnings/(Losses) per share for profit/(loss) for the period attributable to the equity holders of the Company (expressed in € per share) | ||
| Basic earnings (losses) per share for profit (loss) for the period attributable to the equity holders of the Company (in euro per share) | € (0.50) | € (0.92) |
| Diluted earnings (losses) per share for profit (loss) for the period attributable to the equity holders of the Company (in euro per share) | € (0.50) | € (0.92) |
| Unaudited Interim Condensed Consolidated Statements of Comprehensive Income (Loss) - EUR (€) € in Thousands | 9 Months Ended | |
| Sep. 30, 2023 | Sep. 30, 2022 | |
| Profit or loss [abstract] | ||
| Profit/(Loss) for the period | € (69,271) | € (99,075) |
| Items that may be reclassified to profit or loss | ||
| Currency translation differences | 1,677 | (1,488) |
| Items that will not be reclassified to profit or loss | ||
| Defined benefit plan actuarial gains/(losses) | (8) | 168 |
| Other comprehensive income/(loss) for the year, net of tax | 1,669 | (1,320) |
| TOTAL COMPREHENSIVE INCOME/(LOSS) FOR THE PERIOD ATTRIBUTABLE TO THE OWNERS OF THE COMPANY | € (67,602) | € (100,395) |
| Unaudited Interim Condensed Consolidated Balance Sheets - EUR (€) € in Thousands | Sep. 30, 2023 | Dec. 31, 2022 |
| ASSETS | ||
| Non-current assets | € 199,885 | € 196,685 |
| Intangible assets | 26,341 | 28,711 |
| Right of use assets | 42,290 | 41,603 |
| Property, plant and equipment | 113,843 | 112,435 |
| Deferred tax assets | 9,189 | 5,637 |
| Other non-current assets | 8,222 | 8,299 |
| Current assets | 320,653 | 424,660 |
| Inventories | 38,000 | 35,104 |
| Trade receivables | 44,346 | 23,912 |
| Other current assets | 67,054 | 74,079 |
| Cash and cash equivalents | 171,253 | 289,430 |
| Assets classified as held for sale | 0 | 2,134 |
| TOTAL ASSETS | 520,539 | 621,344 |
| EQUITY | ||
| Share capital | 20,837 | 20,755 |
| Share premium | 594,003 | 594,043 |
| Other reserves | 62,205 | 55,252 |
| Retained earnings/(Accumulated deficit) | (450,253) | (306,974) |
| Loss for the period | (69,271) | (143,279) |
| TOTAL EQUITY | 157,521 | 219,797 |
| LIABILITIES | ||
| Non-current liabilities | 144,867 | 124,156 |
| Borrowings | 107,047 | 87,227 |
| Lease liabilities | 27,851 | 28,163 |
| Refund liabilities | 6,257 | 6,635 |
| Provisions | 1,405 | 1,320 |
| Deferred tax liabilities | 2,220 | 694 |
| Other liabilities | 88 | 116 |
| Current liabilities | 218,151 | 277,392 |
| Borrowings | 33,811 | 11,580 |
| Trade payables and accruals | 94,241 | 41,491 |
| Income tax liability | 472 | 532 |
| Tax and Employee-related liabilities | 14,496 | 15,738 |
| Lease liabilities | 25,794 | 25,411 |
| Contract liabilities | 13,343 | 9,411 |
| Refund liabilities | 26,371 | 136,450 |
| Provisions | 9,505 | 31,257 |
| Other liabilities | 117 | 5,523 |
| TOTAL LIABILITIES | 363,018 | 401,547 |
| TOTAL EQUITY AND LIABILITIES | € 520,539 | € 621,344 |
| Unaudited Interim Condensed Consolidated Statements of Cash Flows - EUR (€) € in Thousands | 9 Months Ended | ||
| Sep. 30, 2023 | Sep. 30, 2022 | ||
| CASH FLOWS FROM OPERATING ACTIVITIES | |||
| Profit/(Loss) for the period | € (69,271) | € (99,075) | |
| Adjustments for non-cash transactions | 26,867 | 17,784 | |
| Changes in non-current operating assets and liabilities | (181) | (155,970) | |
| Changes in working capital | (93,335) | 48,830 | |
| Cash used in operations | (135,920) | (188,431) | |
| Income tax paid | (913) | (1,082) | |
| NET CASH GENERATED FROM/(USED IN) OPERATING ACTIVITIES | (136,833) | (189,513) | |
| CASH FLOWS FROM INVESTING ACTIVITIES | |||
| Purchases of property, plant and equipment | (8,354) | (22,474) | |
| Proceeds from sale of property, plant and equipment | 43 | 8 | |
| Purchases of intangible assets | (39) | (76) | |
| Proceeds from assets classified as held for sale | 3,358 | 0 | |
| Interest received | 724 | 59 | |
| NET CASH GENERATED FROM/(USED IN) INVESTING ACTIVITIES | (4,269) | (22,483) | |
| CASH FLOWS FROM FINANCING ACTIVITIES | |||
| Proceeds from issuance of common stock, net of costs of equity transactions | (240) | 93,998 | |
| Proceeds from borrowings, net of transaction costs | 39,683 | 38,141 | |
| Repayment of borrowings | (2,097) | (1,793) | |
| Payment of lease liabilities | (2,444) | (2,171) | |
| Interest paid | (8,764) | (6,544) | |
| NET CASH GENERATED FROM/(USED IN) FINANCING ACTIVITIES | 26,137 | 121,630 | |
| NET CHANGE IN CASH AND CASH EQUIVALENTS | (114,964) | (90,366) | |
| Cash and cash equivalents at beginning of the year | [1] | 286,532 | 346,642 |
| Exchange gains/(losses) on cash | (315) | 1,814 | |
| Restricted cash | 0 | 2,951 | |
| CASH AND CASH EQUIVALENTS AT END OF THE PERIOD | € 171,253 | € 261,042 | |
| [1]Cash and cash equivalents as at December 31, 2022 amounted to €289.4 million (of which restricted cash: €2.9 million). | |||
| Unaudited Interim Condensed Consolidated Statements of Cash Flows (Parenthetical) - EUR (€) € in Thousands | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 |
| Statement of cash flows [abstract] | |||
| Cash and cash equivalents | € 171,253 | € 289,430 | € 261,042 |
| Restricted cash | € 0 | € 2,900 | € 2,951 |
| Unaudited Interim Condensed Consolidated Statements of Changes in Equity € in Thousands | EUR (€) | Share capital EUR (€) shares | Share premium EUR (€) | Other reserves EUR (€) | Retained earnings/ (Accumulated deficit) EUR (€) | Profit/ (loss) for the period EUR (€) |
| Number of shares outstanding, beginning balance (in shares) at Dec. 31, 2021 | shares | 105,239,085 | |||||
| Equity, beginning balance at Dec. 31, 2021 | € 170,581 | € 15,786 | € 409,258 | € 52,512 | € (233,549) | € (73,425) |
| Total comprehensive income/(loss) | (100,395) | (1,320) | (99,075) | |||
| Income appropriation | 0 | (73,425) | 73,425 | |||
| Share-based compensation expense: | ||||||
| Value of services | 599 | 599 | ||||
| Exercises (in shares) | shares | 2,563,011 | |||||
| Exercises | 3,718 | € 384 | 3,333 | |||
| Capital Increase (in shares) | shares | 9,549,761 | |||||
| Capital Increase | 90,479 | € 1,432 | 89,047 | |||
| Number of shares outstanding, ending balance (in shares) at Sep. 30, 2022 | shares | 117,351,857 | |||||
| Equity, ending balance at Sep. 30, 2022 | 164,983 | € 17,603 | 501,638 | 51,791 | (306,974) | (99,075) |
| Number of shares outstanding, beginning balance (in shares) at Dec. 31, 2022 | shares | 138,367,482 | |||||
| Equity, beginning balance at Dec. 31, 2022 | 219,797 | € 20,755 | 594,043 | 55,252 | (306,974) | (143,279) |
| Total comprehensive income/(loss) | (67,602) | 1,669 | (69,271) | |||
| Income appropriation | 0 | (143,279) | 143,279 | |||
| Share-based compensation expense: | ||||||
| Value of services | 5,284 | 5,284 | ||||
| Exercises (in shares) | shares | 544,660 | |||||
| Exercises | 42 | € 82 | (39) | |||
| Number of shares outstanding, ending balance (in shares) at Sep. 30, 2023 | shares | 138,912,142 | |||||
| Equity, ending balance at Sep. 30, 2023 | € 157,521 | € 20,837 | € 594,003 | € 62,205 | € (450,253) | € (69,271) |
