Note 20 - Continuing Involvement Accounting (Detail) - Continuing Involvement Accounting [Member] - EUR (€) € in Millions	Dec. 31, 2023	Dec. 31, 2022
Carrying amount of the original assets transferred [Member]
Continuing Involvemnt Accounting [Line Items]
Trading securities, assets	€ 1,043	€ 1,059
Non-trading financial assets mandatory at fair value through profit and loss	317	328
Carrying amount of the assets continued to bel recognised [Member]
Continuing Involvemnt Accounting [Line Items]
Trading securities, assets	28	34
Non-trading financial assets mandatory at fair value through profit and loss	16	16
Continuing Involvement Accounting, Associated Liabilities [Member]
Continuing Involvemnt Accounting [Line Items]
Carrying amount of associated liabilities	€ 78	€ 95

No definition available.

Name:	db_TradingSecuritiesAssets
Namespace Prefix:	db_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
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Balance Type:	na
Period Type:	duration

- Definition

The amount of financial assets mandatorily measured at fair value through profit or loss in accordance with IFRS 9. [Refer: Financial assets at fair value through profit or loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 8
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_8_a&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of liabilities recognised in the statement of financial position representing the entity's continuing involvement in derecognised financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 42E
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_42E_a&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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