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Operating Costs and Non-underlying Items - Summary of Non-underlying Items Related to Gross Profit and Operating Costs (Parenthetical) (Detail) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Non-underlying Items [Line Items] |  |  |
Gain on business disposal |  | € 57 | € 4,331
Impairment of goodwill |  | 18 |
Non-Current Assets Held for Sale [member] |  |  |
Non-underlying Items [Line Items] |  |  |
Impairment of goodwill |  | € 18 |
Legal Cases in Relation to Investigations [Member] |  |  |
Non-underlying Items [Line Items] |  |  |
Litigation charges | € 87 |  |

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- Definition The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B67 -Subparagraph d -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B67_d_v&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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- Definition Gain on business disposal. + References No definition available. + Details
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- Definition Litigation charges non-underlying. + References No definition available. + Details
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- Definition non-underlying items. + References No definition available. + Details
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- Details
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- Details
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