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Impairment Charges / (Reversals) - Summary of Impairment Charges / (Reversals) (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of impairment loss and reversal of impairment loss [abstract]
Impairment charges on financial assets, excluding receivables	€ 133	€ 71	€ 70
Impairment reversals on financial assets, excluding receivables	(73)	(39)	(32)
Impairment charges and reversals on non-financial assets and receivables	109	46	4
Total	€ 169	€ 78	€ 42

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- Definition

Impairment charges on financial assets excludes receivables.

+ 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

Impairment reversals on financial assets excludes receivables.

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

The amount of impairment loss or reversal of impairment loss recognised in profit or loss. [Refer: Impairment loss recognised in profit or loss; Reversal of impairment loss recognised in profit or loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 99
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_99&doctype=Standard
-URIDate 2019-03-27

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