XML 174 R162.htm IDEA: XBRL DOCUMENT v3.23.1
Significant accounting policies Property - plant and equipment (Details)
 12 Months Ended
Dec. 31, 2022
Fixtures and fittings [member] | Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 3 years
Fixtures and fittings [member] | Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 5 years
Office equipment [member] | Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 3 years
Office equipment [member] | Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 5 years
Computer equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 3 years
Motor vehicles [member] | Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 3 years
Motor vehicles [member] | Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 5 years
Manufacturing equipment | Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 3 years
Manufacturing equipment | Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated useful lives 5 years