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Acquisitions and Disposals - Additional Information (Detail) € in Millions, shares in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Apr. 01, 2020 | Mar. 31, 2020 | Dec. 31, 2020 EUR (€) shares Divisions | Dec. 31, 2019 EUR (€) | Dec. 31, 2018 EUR (€) | Jun. 30, 2020 EUR (€)
Disclosure of Acquisitions and Disposals [Line Items] |  |  |  |  |  |
Value of consideration transferred |  |  | € 6,337 | € 1,167 | € 1,194 |
Revenue of acquiree |  |  | 476 |  |  |
Operating profit of acquiree |  |  | 124 |  |  |
Revenue of group if acquisition completed |  |  | 51,116 |  |  |
Operating profit of group if acquisition completed |  |  | € 8,371 |  |  |
Description of goodwill |  |  | Goodwill represents the future value which the Group believes it will obtain through operational synergies and the application of acquired company ideas to existing Unilever channels and businesses. |  |  |
Total consideration for the disposals |  |  | € 35 | 169 | 7,590 |
Net fair value value of assets acquired |  |  | 3,857 | 771 | € 815 |
Hindustan Unilever Limited [Member] |  |  |  |  |  |
Disclosure of Acquisitions and Disposals [Line Items] |  |  |  |  |  |
Share issue related cost |  |  | 5 |  |  |
Main Horlicks Acquisition [member] |  |  |  |  |  |
Disclosure of Acquisitions and Disposals [Line Items] |  |  |  |  |  |
Value of consideration transferred |  |  | 5,294 |  |  | € 5,294
Revenue of acquiree |  |  | 415 |  |  |
Operating profit of acquiree |  |  | 119 |  |  |
Value of cash transferred |  |  |  |  |  | 449
Value of equity transferred |  |  | € 4,845 |  |  | € 4,845
Exchange rate | Divisions |  |  | (83.05) |  |  |
Revenue of group if acquisition completed |  |  | € 50,867 |  |  |
Operating profit of group if acquisition completed |  |  | 8,342 |  |  |
Contingent assets recognized as of acquisition date |  |  | 73 |  |  |
Business combination acquistion related costs recognized |  |  | € 42 | € 12 |  |
Number of instruments or interests issued or issuable | shares |  |  | 184.6 |  |  |
Percentage interest in subsidiary | 61.90% | 67.20% |  |  |  |
Net fair value value of assets acquired |  |  | € 3,204 |  |  |
Goodwill acquired increase decrease due to foreign exchange differences |  |  | 159 |  |  |
Gross contractual amounts receivable for acquired receivables |  |  | 77 |  |  |
Main Horlicks Acquisition [member] | Glaxosmithkline [Member] |  |  |  |  |  |
Disclosure of Acquisitions and Disposals [Line Items] |  |  |  |  |  |
Contingent liabilities assumed in a business combination |  |  | 123 |  |  |
Main Horlicks Acquisition [member] | Ongoing Litigation [Member] |  |  |  |  |  |
Disclosure of Acquisitions and Disposals [Line Items] |  |  |  |  |  |
Goodwill expected to be deductible for tax purposes |  |  | € 1,300 |  |  |

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