Technology and content expense (Details) - EUR (€) € in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Technology and content expense
Employee benefits expense - Technology and content	€ 3,197	€ 3,157	€ 10,018	€ 9,562
IT maintenance and infrastructure expense	3,115	3,827	10,522	9,982
Technology and content expense	€ 6,312	€ 6,984	€ 20,540	€ 19,544

Technology and content expenses consist principally of research and development activities, including wages and benefits, for employees involved in application, production, maintenance, operation for new and existing goods and services, as well as other technology infrastructure expense.

No definition available.

Name:	jmia_TechnologyAndContentExpense
Namespace Prefix:	jmia_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration