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Share-based compensation - Fair Value Assumptions (Detail) - € / shares | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Assumptions Calculation Fair Value of Shares [Line Items] |  |  |
Share price at grant date (in eur per share) | € 548.0 | € 462.9 | € 270.7
Vesting period | 2 years 8 months 12 days | 2 years 10 months 24 days | 2 years 10 months 24 days
Dividend yield (in percentage) | 1.00% | 0.60% | 0.90%
Eurozone |  |  |
Assumptions Calculation Fair Value of Shares [Line Items] |  |  |
Risk free interest rate (Eurozone) | 0.50% | (0.80%) | (0.60%)
US |  |  |
Assumptions Calculation Fair Value of Shares [Line Items] |  |  |
Risk free interest rate (in percentage) | 2.80% | 0.20% | 1.50%
Expected volatility ASML |  |  |
Assumptions Calculation Fair Value of Shares [Line Items] |  |  |
Expected volatility (in percentage) | 41.80% | 38.50% | 28.90%
Expected volatility PHLX index |  |  |
Assumptions Calculation Fair Value of Shares [Line Items] |  |  |
Expected volatility (in percentage) |  | 35.30% | 24.70%
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) | 47.80% |  |

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- Definition [Line Items] for Assumptions Calculation Fair Value of Shares [Table] + References No definition available. + Details
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- Definition Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumption, Risk-Free Interest Rate + References No definition available. + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Rate of weighted-average expected volatility for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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