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Dividends - Summary of Dividends on Ordinary Capital (Detail)	3 Months Ended
	Jun. 30, 2019 € / shares	Jun. 30, 2019 £ / shares	Jun. 30, 2019 $ / shares	Mar. 31, 2019 € / shares	Mar. 31, 2019 £ / shares	Mar. 31, 2019 $ / shares
Unilever N.V. [member] \| New York shares [member]
Disclosure of Dividends [line items]
Dividend per share			$ 0.4585			$ 0.4641
Unilever N.V. [member] \| Ordinary Shares [member]
Disclosure of Dividends [line items]
Dividend per share \| € / shares	€ 0.4104			€ 0.4104
Unilever PLC [member] \| American Depositary Receipts [member]
Disclosure of Dividends [line items]
Dividend per share			$ 0.4585			$ 0.4641
Unilever PLC [member] \| Ordinary Shares [member]
Disclosure of Dividends [line items]
Dividend per share \| £ / shares		£ 0.3682			£ 0.3546