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v3.25.4

Related parties and variable interest entities - Narrative (Details) | 1 Months Ended | 12 Months Ended |  |  |  |  |
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May 31, 2025 | Dec. 31, 2025 EUR (€) element | Dec. 31, 2024 EUR (€) | Dec. 31, 2023 EUR (€) | Nov. 30, 2025 EUR (€) | Jul. 31, 2025 EUR (€) | Jun. 30, 2025 EUR (€) | Sep. 30, 2024 EUR (€) | Sep. 30, 2021 EUR (€)
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Repayment grace period, loan to related parties |  | 3 years |  |  |  |  |  |  |
Number of elements | element |  | 2 |  |  |  |  |  |  |
2021 loan agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Loans receivable |  | € 839,100,000 | € 912,400,000 |  |  |  |  |  |
Related parties, undrawn amount cancelled |  |  |  |  |  |  |  | € 87,600,000 |
2024 loan agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Loans receivable |  | 610,000,000.0 |  |  |  |  |  |  |
Loans and leases receivable, related parties |  | 527,100,000 |  |  |  |  |  |  |
Unamortized discount, related parties |  | € 68,000,000.0 |  |  |  |  |  |  |
Effective interest rate, related parties |  | 3.10% |  |  |  |  |  |  |
2025 loan agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Loans receivable |  |  |  |  |  | € 444,000,000 |  |  |
Loans and leases receivable, related parties |  | € 333,200,000 |  |  |  |  |  |  |
Unamortized discount, related parties |  | € 110,800,000 |  |  |  |  |  |  |
Effective interest rate, related parties |  | 3.30% |  |  |  |  |  |  |
2025 short term loan agreement June |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Loans receivable |  |  |  |  |  |  | € 169,000,000 |  |
2025 short term loan agreement Nov |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Loans receivable |  |  |  |  | € 212,500,000 |  |  |  |
Loans and leases receivable, related parties |  | € 208,100,000 |  |  |  |  |  |  |
Unamortized discount, related parties |  | € 4,800,000 |  |  |  |  |  |  |
Effective interest rate, related parties |  | 2.80% |  |  |  |  |  |  |
Zeiss High-NA funding commitment | Research and development support provided |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Commitment consideration paid |  | € 22,500,000 | € 45,100,000 | € 67,600,000 |  |  |  |  |
Carl Zeiss SMT GmbH |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Term of loan to related parties |  | 10 years |  |  |  |  |  |  |
Prepaid Expense |  | € 330,900,000 |  |  |  |  |  |  |
Carl Zeiss SMT GmbH | 2025 restatement of the 2021 framework agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Repayment grace period, loan to related parties | 3 years |  |  |  |  |  |  |  |
Carl Zeiss SMT GmbH | Short term loans for supply chain obligations |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Term of loan to related parties | 1 year |  |  |  |  |  |  |  |
Any Director or Officer of ASML or any associate thereof |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Transactions outside the normal course of business |  | 0 |  |  |  |  |  |  |
Long-term debt, average amount outstanding |  | 0 |  |  |  |  |  |  |
Long-term debt |  | € 0 |  |  |  |  |  |  |
Minimum | Carl Zeiss SMT GmbH |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Interest rate on principal amount (in percentage) |  | 0.01% |  |  |  |  |  |  |
Minimum | Carl Zeiss SMT GmbH | 2025 restatement of the 2021 framework agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Term of loan to related parties | 7 years |  |  |  |  |  |  |  |
Maximum | 2021 loan agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Loans receivable |  |  |  |  |  |  |  |  | € 1,000,000,000
Maximum | 2024 loan agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Loans receivable |  |  |  |  |  |  |  | € 1,000,000,000 |
Maximum | Carl Zeiss SMT GmbH |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Interest rate on principal amount (in percentage) |  | 1.00% |  |  |  |  |  |  |
Maximum | Carl Zeiss SMT GmbH | 2025 restatement of the 2021 framework agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Term of loan to related parties | 15 years |  |  |  |  |  |  |  |
Carl Zeiss SMT GmbH | Carl Zeiss SMT Holding GmbH & Co. KG |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Ownership interest (in percentage) |  | 100.00% |  |  |  |  |  |  |
Carl Zeiss SMT Holding GmbH & Co. KG | Carl Zeiss SMT Holding GmbH & Co. KG |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage (in percentage) |  | 24.90% |  |  |  |  |  |  |

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