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General information / Summary of significant accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2012
General information / Summary of significant accounting policies [Abstract] |
Other intangible assets |
Category |  | Estimated useful life
Intellectual property |  | 3 - 10 years
Developed technology |  | 6 years
Customer relationships |  | 8 years
Other |  | 2 - 6 years
Property, plant and equipment |
Category |  | Estimated useful life
Buildings and constructions |  | 5 - 40 years
Machinery and equipment |  | 2 - 5 years
Leasehold improvements |  | 5 - 10 years
Furniture, fixtures and other equipment |  | 3 - 5 years
Net income per ordinary share |
Year ended December 31 (in thousands, except per share data) |  |  | 2012 EUR |  |  |  | 2011 EUR |  |  |  | 2010 EUR |
Net income |  |  | 1,146,316 |  |  |  | 1,466,960 |  |  |  | 1,021,820 |
Weighted average number of shares outstanding during the year (after deduction of treasury stock) |  |  | 424,096 |  |  |  | 425,618 |  |  |  | 435,146 |
Basic net income per ordinary share |  |  | 2.70 |  |  |  | 3.45 |  |  |  | 2.35 |
Weighted average number of shares: |  |  | 424,096 |  |  |  | 425,618 |  |  |  | 435,146 |
Plus shares applicable to: |  |  |  |  |  |  |  |  |  |  |  |
Options and conditional shares1 |  |  | 2,890 |  |  |  | 3,435 |  |  |  | 3,828 |
Dilutive potential ordinary shares |  |  | 2,890 |  |  |  | 3,435 |  |  |  | 3,828 |
Adjusted weighted average number of shares |  |  | 426,986 |  |  |  | 429,053 |  |  |  | 438,974 |
Diluted net income per ordinary share 1 |  |  | 2.68 |  |  |  | 3.42 |  |  |  | 2.33 |
1 | The calculation of diluted net income per ordinary share assumes the exercise of options issued under ASML stock option plans and the issuance of shares under ASML share plans for periods in which exercises or issuances would have a dilutive effect. The calculation of diluted net income per ordinary share does not assume exercise of such options or issuance of shares when such exercises or issuance would be anti-dilutive.

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