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Net Finance Cost - Summary of Net Finance Costs (Parenthetical) (Detail) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Statement [Line Items] |  |  |
Unwinding of discount | € (21) | € (6) |
Finance costs | (728) | (821) | € (718)
Brazil [Member] |  |  |
Statement [Line Items] |  |  |
Interest on tax settlement | 90 | 70 |
India [Member] |  |  |
Statement [Line Items] |  |  |
Interest on corporate income tax refund | 27 |  |
Changes In Functional Currency |  |  |
Statement [Line Items] |  |  |
Finance costs | € 0 | € (40) |

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- Definition The amount of costs associated with financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 82 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_82_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Interest on income tax refund. + References No definition available. + Details
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- Definition Unwinding discount on deferred consideration. + References No definition available. + Details
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- Details
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- Details
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- Details
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