Name:	ifrs-full_DisclosureOfClassesOfShareCapitalLineItems
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Data Type:	xbrli:stringItemType
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The increase (decrease) in the number of shares outstanding. [Refer: Number of shares outstanding]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_79_a_iv&doctype=Standard
-URIDate 2020-01-01

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Namespace Prefix:	ifrs-full_
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Balance Type:	na
Period Type:	duration

The increase in equity through the issue of equity instruments.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 106
-Subparagraph d
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_106_d_iii&doctype=Standard
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Name:	ifrs-full_IssueOfEquity
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The nominal value of capital issued.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 78
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_e&doctype=Standard
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The number of shares issued by the entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 106
-Subparagraph d
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Name:	ifrs-full_NumberOfSharesIssued
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Data Type:	xbrli:sharesItemType
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Period Type:	instant

The nominal value per share.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2020-01-01
-Paragraph 79
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-URIDate 2020-01-01

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

The cash inflow from issuing shares.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2020-01-01
-Paragraph 17
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_17_a&doctype=Standard
-URIDate 2020-01-01

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The amount of cost related to the issuance of shares.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The amount received or receivable from the issuance of the entity's shares in excess of nominal value.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The net proceeds from issuing shares, after issuance costs.

No definition available.

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The number of votes per share of share capital.

No definition available.

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Namespace Prefix:	jmia_
Data Type:	xbrli:integerItemType
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Period Type:	duration

The total amount of share capital plus share premium, combined, at the balance sheet date.

No definition available.