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Employees - Share- based Compensation Plans - Additional Information (Detail) - EUR (€) € in Millions | 2 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 23, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Shares and options outstanding in respect of share-based compensation plans |  | 12,283,872 | 11,944,106
Number of ordinary shares held by NV group companies to satisfy options granted |  | 1,382,155 | 12,419,009
Book value of shares held in respect of share-based compensation plans eliminated on consolidation |  | € 483 | € 640
Market value of shares held in respect of share-based compensation plans eliminated on consolidation |  | € 357 | € 635
Performance share plan : Number of shares granted between 31/12/2020 and 23/02/2021 | 0 |  |
Performance share plan : Number of shares vested between 31/12/2020 and 23/02/2021 | 2,232,282 |  |
Performance share plan : Number of shares forfeited between 31/12/2020 and 23/02/2021 | 43,435 |  |
Unilever PLC [member] |  |  |
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Number of shares held by employee share ownership trust |  | 5,884,511 |
Number of shares held as treasury shares |  | 1,382,155 |
Ordinary Shares [member] |  |  |
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Number of shares transferred To employee share ownership trust |  | 4,523,367 |
Ordinary Shares [member] | Unilever NV And PLC [member] |  |  |
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Number of shares transferred To employee share ownership trust |  | 4,523,367 |
New York Registry Share [member] | Unilever N.V. [member] |  |  |
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Number of shares transferred To employee share ownership trust |  | 892,155 |
American Depositary Shares [member] | Unilever PLC [member] |  |  |
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Number of shares transferred To employee share ownership trust |  | 468,989 |
Executive Directors [Member] |  |  |
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Maximum percentage of annual bonus that managers are entitled to invest in shares under MCIP |  | 67.00% |
Minimum Percentage Of Annual Bonus That Managers Are Entitled To Invest In MCIP Shares |  | 33.00% |
Bottom of range [member] |  |  |
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Range of share awards percentage for performance share plans |  | 0.00% |
Top of range [member] |  |  |
Disclosure of Share Based Compensation Plans [Line Items] |  |  |
Range of share awards percentage for performance share plans |  | 200.00% |

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