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Capital and Funding - Summary of Share Capital (Detail) € in Millions, £ in Millions | Dec. 31, 2018 EUR (€) | Dec. 31, 2018 GBP (£) | Dec. 31, 2017 EUR (€) | Dec. 31, 2017 GBP (£)
--- | --- | --- | --- | ---
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | € 464.0 | £ 37.0 | € 484.0 | £ 40.8
Authorised | 481.0 |  | 481.0 |
Unilever PLC [member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | 190.0 |  | 210.0 |
Unilever PLC [member] | Ordinary Shares [member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | £ |  | 40.8 |  | 40.8
Unilever PLC [member] | Internal Holdings Eliminated on Consolidation [Member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | £ |  | (0.1) |  | (0.1)
Unilever PLC [member] | Deferred Stock [Member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | £ |  | 0.1 |  | £ 0.1
Unilever PLC [member] | Cancellation of Treasury shares [member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | £ |  | £ (3.8) |  |
Unilever N.V. [member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | 274.0 |  | 274.0 |
Unilever N.V. [member] | Ordinary Shares [member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | 274.0 |  | 274.0 |
Authorised | 480.0 |  | 480.0 |
Unilever N.V. [member] | Ordinary Special Shares [member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | 1.0 |  | 1.0 |
Authorised | 1.0 |  | 1.0 |
Unilever N.V. [member] | Internal Holdings Eliminated on Consolidation [Member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued, called up and fully paid | € (1.0) |  | € (1.0) |

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