XML 59 R51.htm IDEA: XBRL DOCUMENT
v3.19.2

Dividends - Summary of Quarterly Dividend Calendar (Detail) | 6 Months Ended
--- | ---
Jun. 30, 2019
Quarterly Dividend For Q2 2019 [member] |
Disclosure of Dividends [line items] |
Announcement Date | Jul. 25, 2019
Ex-Dividend Date | Aug. 08, 2019
Record Date | Aug. 09, 2019
Payment Date | Sep. 11, 2019
Quarterly Dividend For Q3 2019 [member] |
Disclosure of Dividends [line items] |
Announcement Date | Oct. 17, 2019
Ex-Dividend Date | Oct. 31, 2019
Record Date | Nov. 01, 2019
Payment Date | Dec. 04, 2019

X
- Definition Disclosure of dividends. + References No definition available. + Details
Name: | ul_DisclosureOfDividendsLineItems
Namespace Prefix: | ul_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividend declared date. + References No definition available. + Details
Name: | ul_DividendDeclaredDate
Namespace Prefix: | ul_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividend payable date. + References No definition available. + Details
Name: | ul_DividendPayableDate
Namespace Prefix: | ul_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividends record date. + References No definition available. + Details
Name: | ul_DividendsRecordDate
Namespace Prefix: | ul_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ex-dividend date. + References No definition available. + Details
Name: | ul_ExDividendDate
Namespace Prefix: | ul_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ul_DividendAxis=ul_QuarterlyDividendForQ22019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ul_DividendAxis=ul_QuarterlyDividendForQ32019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |