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Impairment Charges / (Reversals) - Additional Information (Detail) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of impairment loss and reversal of impairment loss [line items] |  |  |
Impairment charges and reversals on non-financial assets and receivables | € 109 | € 46 | € 4
Impairment charges non financial assets value of business acquired and deferred policy acquisition costs | 76 |  |
Impairment loss (reversal of impairment loss) recognised in profit or loss |  | € 46 |
Capital Injections [Member] |  |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |  |
Impairment loss on financial assets | 10 |  |
Software [member] |  |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |  |
Impairment of intangible assets other than goodwill | € 9 |  |

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- Definition Impairment charges and reversals on non-financial assets and receivables increased amount. + References No definition available. + Details
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- Definition Impairment loss (reversal of impairment loss) recognised in profit or loss non-financial assets and receivables. + References No definition available. + Details
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- Definition The amount of impairment loss on financial assets. [Refer: Financial assets; Impairment 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 e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_20_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in deferred acquisition costs arising from insurance contracts. [Refer: Deferred acquisition costs arising from insurance contracts] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph IG39 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_IG39&doctype=Implementation%20Guidance&book=b -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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