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Condensed Deutsche Bank AG (Parent Company Only) Financial Information - Condensed Statement of Cash Flows (Deutsche Bank Parent) (Detail) - Deutsche Bank AG - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Condensed Statement of Cash Flows (Deutsche Bank Parent) [Line Items]      
Net cash provided by (used in) operating activities € 43,482 € (29,917) € 5,231
Proceeds from:      
Sale of financial assets at fair value through other comprehensive income 10,215 17,261 14,245
Maturities of financial assets at fair value through other comprehensive income 14,709 14,788 13,769
Sale of debt securities held to collect at amortized cost 0 20 0
Maturities of debt securities held to collect at amortized cost 3,426 6,435 6,702
Sale of equity method investments 0 0 20
Sale of property and equipment 4 17 28
Purchase of:      
Financial assets at fair value through other comprehensive income (28,744) (35,559) (32,017)
Debt Securities held to collect at amortized cost (22,951) (5,110) (3,920)
Investments in associates (5) (57) (60)
Property and equipment (298) (377) (327)
Net change in investments in subsidiaries (531) (495) (35)
Other, net (1,382) (1,303) (1,199)
Net cash provided by (used in) investing activities (25,557) (4,379) (2,794)
Cash flows from financing activities:      
Issuances of subordinated long-term debt 19 3 1,396
Repayments and extinguishments of subordinated long-term debt (2,699) (114) (1,407)
Principal portion of lease payments (363) (413) (395)
Common shares issued 0 0 0
Purchases of treasury shares (1,618) (1,126) (857)
Sale of treasury shares 0 0 395
Additional Equity Components (AT1) issued 2,500 3,000 0
Additional Equity Components (AT1) repaid (2,360) 0 0
Purchases of Additional Equity Components (AT1) (3,063) (3,341) (356)
Sale of Additional Equity Components (AT1) 3,071 3,316 415
Coupon on additional equity components, pre tax (761) (574) (498)
Cash dividends paid to Deutsche Bank shareholders (1,315) (883) (610)
Net cash provided by (used in) financing activities (6,589) (131) (1,918)
Net effect of exchange rate changes on cash and cash equivalents (4,109) 1,967 (791)
Net increase (decrease) in cash and cash equivalents 7,228 (32,460) (273)
Cash and cash equivalents at beginning of period 104,608 137,068 137,341
Cash and cash equivalents at end of period 111,836 104,608 137,068
Net cash provided by (used in) operating activities include      
Income taxes paid (received), net 25 738 196
Interest paid 28,553 31,629 24,360
Interest received 39,533 41,863 38,161
Dividends received 2,186 2,754 2,053
Cash and cash equivalents comprise      
Cash and central bank balances (not included Interest-earning time deposits with central banks) 104,817 98,417 132,547
Interbank balances (w/o central banks) 7,018 6,191 4,521
Total € 111,836 € 104,608 € 137,068