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Share-based compensation - Fair Value Assumptions (Details) - € / shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Assumptions Calculation Fair Value of Shares [Line Items]      
Share price at grant date (in eur per share) € 707.1 € 620.1 € 548.0
Vesting period 2 years 10 months 24 days 2 years 10 months 24 days 2 years 8 months 12 days
Dividend yield (in percentage) 0.70% 0.90% 1.00%
Eurozone      
Assumptions Calculation Fair Value of Shares [Line Items]      
Risk free interest rate (Eurozone) 2.40% 2.40% 0.50%
US      
Assumptions Calculation Fair Value of Shares [Line Items]      
Risk free interest rate (in percentage) 4.20% 3.90% 2.80%
Expected volatility ASML      
Assumptions Calculation Fair Value of Shares [Line Items]      
Expected volatility (in percentage) 40.00% 46.20% 41.80%
Average volatility of the peer group (market practice)      
Assumptions Calculation Fair Value of Shares [Line Items]      
Average volatility of the peer group (market practice) (in percentage) 43.30% 50.00% 47.80%