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The gains (losses) on financial assets measured at amortised cost. [Refer: Financial assets at amortised cost]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 56
-Subparagraph a
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_56_a_iii&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 20
-Subparagraph a
-Clause vi
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_a_vi&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 56
-Subparagraph a
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_56_a_iii&doctype=Standard
-URIDate 2025-03-27

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- References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 20
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_a_i&doctype=Standard
-URIDate 2025-03-27

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Data Type:	xbrli:monetaryItemType
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Net amount of gains or losses on financial assets and liabilities at fair value through profit or loss.

No definition available.

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Amount of gains or losses on financial assets and liabilities held for trading.

No definition available.

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Net amount of gains or losses on financial assets and liabilities, net.

No definition available.

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Namespace Prefix:	san_
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Period Type:	duration

Net amount of gains or losses on financial assets and liabilities not measured at fair value through profit or loss, net.

No definition available.

Name:	san_GainsLossesOnFinancialAssetsAndLiabilitiesNotMeasuredAtFairValueThroughProfitOrLossNet
Namespace Prefix:	san_
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Net amount of gains or losses on financial assets and liabilities not measured at fair value through profit or loss other than those measured at amortised cost.

No definition available.

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Net amount of gains or losses from hedge accounting recognized in profit or loss.

No definition available.