XML 142 R105.htm IDEA: XBRL DOCUMENT v3.19.1

Goodwill and Intangible Assets - Summary of Key Assumptions Used in Discounted Cash Flow (Detail)	12 Months Ended
	Dec. 31, 2018
Food and Refreshment [Member] | Europe [member]
Disclosure of detailed information about intangible assets [line items]
Longer-term sustainable growth rates	1.20%
Average near-term nominal growth rates	0.00%
Average operating margins	16.00%
Food and Refreshment [Member] | The Americas [member]
Disclosure of detailed information about intangible assets [line items]
Longer-term sustainable growth rates	1.60%
Average near-term nominal growth rates	0.70%
Average operating margins	15.00%
Beauty & Personal Care [member] | The Americas [member]
Disclosure of detailed information about intangible assets [line items]
Longer-term sustainable growth rates	1.60%
Average near-term nominal growth rates	2.80%
Average operating margins	20.00%
Beauty & Personal Care [member] | Asia/AMET/RUB [member]
Disclosure of detailed information about intangible assets [line items]
Longer-term sustainable growth rates	3.80%
Average near-term nominal growth rates	3.90%
Average operating margins	22.00%

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_DisclosureOfIntangibleAssetsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Average near term nominal growth rate used to discounted cash flow projections.

+ References

No definition available.

+ Details

Name:	ul_AverageNearTermNominalGrowthRateUsedToDiscountedCashFlowProjections
Namespace Prefix:	ul_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Average operating margins used to discounted cash flow projections.

+ References

No definition available.

+ Details

Name:	ul_AverageOperatingMarginsUsedToDiscountedCashFlowProjections
Namespace Prefix:	ul_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Long term sustainable growth rate used to discounted cash flow projections.

+ References

No definition available.

+ Details

Name:	ul_LongTermSustainableGrowthRateUsedToDiscountedCashFlowProjections
Namespace Prefix:	ul_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis=ul_FoodAndRefreshmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=us-gaap_EuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=ul_TheAmericasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis=ul_BeautyAndPersonalCareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=ul_AsiaAfricaMiddleEastTurkeyRussiaUkraineAndBelarusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: