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Accounting principles (Tables)
 12 Months Ended
Dec. 31, 2025
Disclosure Of Significant Accounting Policies [Abstract]  
Schedule of useful lives or depreciation rates, property, plant and equipment Property and equipment is stated at historical cost less accumulated depreciation and impairment.
Depreciation is computed using the straight-line method over the estimated useful lives of the depreciable
assets, generally, by applying the following useful lives to each class of property and equipment:
Equipment, tools and fixtures and fittings ...............................
5 years
Computers and other machinery ..............................................
3 years
Leasehold improvements............................................................
The shorter of lease term and useful life
Schedule of employee benefits
2025
2024
2023
Salaries and other remuneration ..................................................................
$(417)
$(393)
$(379)
Statutory and contractual social security expenses ................................
(102)
(113)
(109)
of which: pension expenses ...........................................................................
(25)
(25)
(26)
Total employee benefits ....................................................................................
$(520)
$(506)
$(488)