XML 281 R131.htm IDEA: XBRL DOCUMENT
v3.20.4

Capital and funding - Additional Information (Detail) - shares | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of classes of share capital [line items] |  |
Number of ordinary shares held by other group companies in connection with share-based compensation plans | 1,382,155 | 12,419,009
Ordinary Shares [member] |  |
Disclosure of classes of share capital [line items] |  |
Number of shares acquired |  | 3,754,000
Number of shares transferred To employee share ownership trust | 4,523,367 |
Unilever N.V. [member] | Ordinary Shares [member] |  |
Disclosure of classes of share capital [line items] |  |
Number of shares issued |  | 1,460,714,804
Unilever N.V. [member] | New York Registry Share [Member] |  |
Disclosure of classes of share capital [line items] |  |
Number of shares transferred To employee share ownership trust | 892,155 |
Unilever PLC [member] |  |
Disclosure of classes of share capital [line items] |  |
Number of shares held by employee share ownership trust | 5,884,511 |
Nominal dividend paid on the deferred stock of PLC | 6.00% |
Number of treasury shares held | 7,266,666 |
Unilever PLC [member] | Ordinary Shares [member] |  |
Disclosure of classes of share capital [line items] |  |
Number of shares issued | 2,629,243,772 | 1,168,530,650
Unilever PLC [member] | American Depository Shares [Member] |  |
Disclosure of classes of share capital [line items] |  |
Number of shares transferred To employee share ownership trust | 468,989 |
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 |

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfClassesOfShareCapitalLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | ifrs-full_NumberOfSharesIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares in the entity held by the entity or by its subsidiaries or associates. [Refer: Associates [member]; Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 79 -Subparagraph a -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_79_a_vi&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_SharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Nominal dividend paid on the deferred stock of PLC. + References No definition available. + Details
Name: | ul_NominalDividendPaidOnTheDeferredStockOfPLC
Namespace Prefix: | ul_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of ordinary shares held to satisfy options granted. + References No definition available. + Details
Name: | ul_NumberOfOrdinarySharesHeldToSatisfyOptionsGranted
Namespace Prefix: | ul_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares acquired during the period + References No definition available. + Details
Name: | ul_NumberOfSharesAcquiredDuringThePeriod
Namespace Prefix: | ul_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares held by employee share ownership trust. + References No definition available. + Details
Name: | ul_NumberOfSharesHeldByEmployeeShareOwnershipTrust
Namespace Prefix: | ul_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares transferred To employee share ownership trust . + References No definition available. + Details
Name: | ul_NumberOfSharesTransferredToEmployeeShareOwnershipTrust
Namespace Prefix: | ul_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ul_ParentCompaniesOfTheGroupAxis=ul_UnileverNVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ul_NewYorkRegistryShareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ul_ParentCompaniesOfTheGroupAxis=ul_UnileverPLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ul_AmericanDepositorySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ul_SharesIssuedToNvShareholdersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |