Consolidated Balance Sheet (Parenthetical) - € / shares	Dec. 31, 2025	Dec. 31, 2024
Statement of financial position [abstract]
Common shares, nominal value (in EUR per share)	€ 2.56	€ 2.56

Nominal value of each share derived by dividing the total amount of share capital by the number of shares

No definition available.

Name:	db_NominalValueOfEachShareDerivedByDividingTheTotalAmountOfShareCapitalByTheNumberOfShares
Namespace Prefix:	db_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	instant