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Combined Earnings Per Share - Summary of Computation of Earnings Per Share (Detail) - EUR (€) € / shares in Units, € in Millions, shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings per share [Line Items]
Basic earnings per share	€ 2.16	€ 1.83	€ 1.73
Diluted earnings per share	2.15	1.82	1.72
Underlying earnings per share	€ 2.24	€ 2.03	€ 1.93
Less treasury shares held by employee share trusts and companies	(223.3)	(184.7)	(184.8)
Combined average number of share units	2,801.6	2,840.2	2,840.1
Add dilutive effect of share-based compensation plans	12.4	13.7	15.3
Diluted combined average number of share units - used for diluted and underlying earnings per share	2,814.0	2,853.9	2,855.4
Net profit	€ 6,486	€ 5,547	€ 5,259
Non-controlling interests	(433)	(363)	(350)
Net profit attributable to shareholders' equity - used for basic and diluted earnings per share	6,053	5,184	4,909
Post tax impact of non-underlying items	262	601	605
Underlying profit attributable to shareholders' equity - used for underlying earnings per share	€ 6,315	€ 5,785	€ 5,514
Unilever N.V. [member]
Earnings per share [Line Items]
Combined average number of share units	1,714.7	1,714.7	1,714.7
Unilever PLC [member]
Earnings per share [Line Items]
Combined average number of share units	1,310.2	1,310.2	1,310.2

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- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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