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Risk management - Quantitative SICR thresholds (Details) | Jun. 30, 2025 | Dec. 31, 2024
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Mortgages | Investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 2.9 | 2.9
Mortgages | Non-investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 2.4 | 2.4
Consumer lending | Investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 2.9 | 2.8
Consumer lending | Non-investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 2.2 | 2.1
Business lending | Investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 2.7 | 2.7
Business lending | Non-investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 2.0 | 2.1
Governments and financial institutions | Investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 2.9 | 2.9
Governments and financial institutions | Non-investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 1.9 | 1.9
Other Wholesale Banking | Investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 2.7 | 2.7
Other Wholesale Banking | Non-investment grade |  |
Disclosure of financial assets [line items] |  |
Average threshold ratio | 1.9 | 1.9

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