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Financial Instruments Fair Value Risk - Additional Information (Detail) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of Detailed Information about Financial Instruments [Line Items] |  |
Unlisted investments include of investment | € 29 | € 35
Level 3 [member] |  |
Disclosure of Detailed Information about Financial Instruments [Line Items] |  |
Impact in income statement due to Level 3 instruments | (22) | (9)
Option over a non-controlling interest | 51 | 0
Long-term cash receivables insurance contracts | 106 | 114
Level 3 [member] | Unilever Ventures companies [Member] |  |
Disclosure of Detailed Information about Financial Instruments [Line Items] |  |
Unlisted investments include of investment | € 494 | € 403

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- Definition Long-term cash receivables insurance contracts. + References No definition available. + Details
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