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Fair Value - Gains and Losses Recognized in the Income Statement on Financial Assets and Financial Liabilities (Detail) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of Fair Value Financial Assets And Liabilities [abstract] |  |
Trading | € 21,020 | € (4,584)
Designated | € 13,574 | € (7,356)

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- Definition Disclosure Of Fair Value Financial Assets And Liabilities [abstract] + References No definition available. + Details
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- Definition Gains losses on financial assets and liabilities at fair value through profit or loss designated as upon initial recognition. + References No definition available. + Details
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- Definition The gains (losses) on financial assets at fair value through profit or loss classified as held for trading. [Refer: Financial assets at fair value through profit or loss, classified as held for trading; Gains (losses) on financial assets at fair value through profit or loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_20_a_i&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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