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Segment Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Disclosure of operating segments [abstract]
Description of revenue from customers	The Unilever Group is not reliant on revenues from transactions with any single customer and does not receive 10% or more of its revenues 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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- 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

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-Number 8
-IssueDate 2017-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2017-03-01&anchor=para_34&doctype=Standard
-URIDate 2017-03-09

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