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Guarantees and commitments - Other guarantees (Details 2) - CHF (SFr) SFr in Billions	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Guarantees
Amount jointly guaranteed by deposit-taking banks and securities dealers in Switzerland		SFr 6.0
Deposit Insurance Guarantee Scheme, Amount Guaranteed, Percentage		1.60%
Group's share in amount jointly guaranteed by deposit-taking banks and securities dealers in Switzerland	SFr 0.6

X

- Definition

Represents the amount jointly guaranteed by deposit-taking banks and securities dealers in Switzerland under deposit insurance guarantee scheme.

+ References

No definition available.

+ Details

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Namespace Prefix:	cs_
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Balance Type:	credit
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X

- References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Represents the share of reporting entity in the total amount jointly guaranteed by deposit-taking banks and securities dealers in Switzerland in deposit insurance guarantee scheme.

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

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