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Segment information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021
Disclosure of operating segments [abstract]
Description of revenue from customers	The Unilever Group is not reliant on turnover from transactions with any single customer and does not receive 10% or more of its turnover from transactions with any single customer.
Description of turnover from other countries	No other country had turnover or non-current assets (as shown above) greater than 10% of the Group total.

X

- Definition

The description of the basis for attributing revenues from external customers to individual countries. [Refer: Revenue]

+ References

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-IssueDate 2021-01-01
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- References

No definition available.

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- Definition

Information about the entity's major customers and the extent of the entity's reliance on them.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2021-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2021-en-r&anchor=para_34&doctype=Standard
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