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Events After The Balance Sheet Date - Additional Information (Detail) € in Millions | 3 Months Ended
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Dec. 31, 2020 EUR (€) | Dec. 31, 2020 £ / shares | Dec. 31, 2019 EUR (€)
Disclosure of Non-adjusting Events after Reporting Period [Line Items] |  |  |
Dividend declared | € 1,125 |  |
Unilever PLC [member] |  |  |
Disclosure of Non-adjusting Events after Reporting Period [Line Items] |  |  |
Dividend declared | € 1,125 |  | € 1,073
Major Ordinary Share Transactions [member] | Unilever PLC [member] |  |  |
Disclosure of Non-adjusting Events after Reporting Period [Line Items] |  |  |
Dividend payables per share | £ / shares |  | £ 0.3760 |

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- Definition The amount of dividends proposed or declared after the reporting period but before financial statements are authorised for issue. Such dividends are not recognised as a liability at the end of the reporting period because no obligation exists at that time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 137 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_137_a&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 10 -IssueDate 2020-01-01 -Paragraph 13 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=10&code=ifrs-tx-2020-en-r&anchor=para_13&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount, per share, of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 137 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_137_a&doctype=Standard -URIDate 2020-01-01 + Details
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