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Accounting Information and Policies - Additional Information (Detail) - shares | Nov. 30, 2020 | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Unilever N.V. [Member] | Ordinary shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued |  | 0 | 0
Unilever PLC [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Common Stock Shares Issued For Each Share Held In The Previous Company | 1 |  |
Unilever PLC [Member] | Shares Issued to NV Shareholders [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued | 1,460,713,122 |  |
Unilever PLC [Member] | Ordinary shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued |  | 2,629,243,772 | 2,629,243,772

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- Definition The number of shares issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_106_d&doctype=Standard -URIDate 2020-01-01 + Details
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