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Equity method investments (Details) - EUR (€) € in Millions |  | 12 Months Ended
--- | --- | ---
Jun. 29, 2017 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Profit (loss) from equity method investments |  | € 216.7 | € 209.8 |  | € 191.3
Cash received equity method investments |  | € 320.5 | 225.4 | [1] | € 218.0
Carl Zeiss SMT Holding GmbH & Co. KG |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Weighted average useful life of finite-lived intangible assets acquired |  | 11 years 1 month 6 days |  |  |
Equity method investment acquisition date | Jun. 29, 2017 |  |  |  |
Carl Zeiss SMT Holding GmbH & Co. KG | Carl Zeiss SMT Holding GmbH & Co. KG |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership percentage (in percentage) |  | 24.90% |  |  |
Carl Zeiss SMT Holding GmbH & Co. KG | Share of net income (loss) after accounting policy alignment |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Profit (loss) from equity method investments |  | € 322.8 | 216.4 |  |
Carl Zeiss SMT Holding GmbH & Co. KG | Basis difference amortization |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Profit (loss) from equity method investments |  | 29.7 | 27.4 |  |
Carl Zeiss SMT Holding GmbH & Co. KG | Intercompany profit elimination |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Profit (loss) from equity method investments |  | € (76.4) | € 20.8 |  |
[1] | De preciation and amortization include depreciation of property, pla nt and equipment, amortization of intangible assets, and other (amortization of underwriting commissions, amortization of discounts related to borrowings, credit facilities and accretion of loans issued at a dis count).

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