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Dividends - Summary of Dividends on Ordinary Capital (Detail)	3 Months Ended
	Jun. 30, 2018 € / shares	Jun. 30, 2018 £ / shares	Jun. 30, 2018 $ / shares	Mar. 31, 2018 € / shares	Mar. 31, 2018 £ / shares	Mar. 31, 2018 $ / shares
Unilever N.V. [member] | New York shares [member]
Disclosure of Dividends [Line Items]
Dividend per share			$ 0.4531			$ 0.4789
Unilever N.V. [member] | Ordinary Shares [member]
Disclosure of Dividends [Line Items]
Dividend per share | € / shares	€ 0.3872			€ 0.3872
Unilever PLC [member] | American Depositary Receipts [member]
Disclosure of Dividends [Line Items]
Dividend per share			$ 0.4531			$ 0.4789
Unilever PLC [member] | Ordinary Shares [member]
Disclosure of Dividends [Line Items]
Dividend per share | £ / shares		£ 0.3435			£ 0.3341

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