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Loans and advances to customers - Summary of loans and advances to customers (Details) - EUR (€) € in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | € 683,611 | € 647,313
Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 689,445 | 652,933
Loans and advances to customers | Accumulated impairments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | (5,833) | (5,621)
Loans and advances to public authorities | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 18,661 | 14,384
Residential mortgages | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 348,594 | 329,506
Other personal lending | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 36,797 | 36,571
Corporate Lending | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 285,393 | 272,472
Netherlands |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 192,197 | 180,099
Netherlands | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 193,007 | 180,928
Netherlands | Loans and advances to customers | Accumulated impairments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | (811) | (830)
Netherlands | Loans and advances to public authorities | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 1,888 | 1,070
Netherlands | Residential mortgages | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 119,191 | 112,145
Netherlands | Other personal lending | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 5,007 | 5,036
Netherlands | Corporate Lending | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 66,921 | 62,677
Rest of the world |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 491,415 | 467,214
Rest of the world | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 496,437 | 472,005
Rest of the world | Loans and advances to customers | Accumulated impairments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | (5,023) | (4,791)
Rest of the world | Loans and advances to public authorities | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 16,773 | 13,314
Rest of the world | Residential mortgages | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 229,403 | 217,361
Rest of the world | Other personal lending | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | 31,789 | 31,535
Rest of the world | Corporate Lending | Gross carrying amount |  |
Disclosure of detailed information about financial instruments [line items] |  |
Loans and advances to customers | € 218,473 | € 209,795

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