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Derivatives - Credit Derivative Disclosure By Quality (Detail) - EUR (€) € in Millions	Dec. 31, 2019	Dec. 31, 2018
Disclosure of internal credit grades [Line Items]
Notional	€ 4,444	€ 4,358
Fair value	89	57
AAA [member]
Disclosure of internal credit grades [Line Items]
Notional	10	16
AA [member]
Disclosure of internal credit grades [Line Items]
Notional	106	97
Fair value	3	1
A [member]
Disclosure of internal credit grades [Line Items]
Notional	915	764
Fair value	13	10
BBB [member]
Disclosure of internal credit grades [Line Items]
Notional	3,258	3,201
Fair value	70	45
BB [member]
Disclosure of internal credit grades [Line Items]
Notional	97	226
Fair value	3	5
B or lower [member]
Disclosure of internal credit grades [Line Items]
Notional	€ 58	54
Fair value		€ (3)

X

- Definition

The fair value of a credit derivative. [Refer: At fair value [member]; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 24G
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24G_a&doctype=Standard
-URIDate 2019-03-27

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

The nominal amount of a credit derivative. [Refer: Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 24G
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24G_a&doctype=Standard
-URIDate 2019-03-27

+ Details

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X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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