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FI - Difference between fair value and unpaid principle balances (Details 10) - CHF (SFr) SFr in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financial instruments |  |
Cash and Due from Banks | SFr 128 | SFr 198
Interest-bearing deposits with banks | 0 | 14
Central bank funds sold, securities purchased under resale agreements and securities borrowing transactions | 26,237 | 40,793
Loans | 2,458 | 7,358
Other assets | 3,758 | 8,947
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions | (356) | (14,133)
Short-term borrowings | (4,012) | (6,783)
Long-term debt | (32,874) | (57,919)
Other liabilities | (1,500) | (2,286)
Aggregate fair value |  |
Loans |  |
Non-interest-earning loans | 511 | 733
Financial instruments |  |
Central bank funds sold, securities purchased under resale agreements and securities borrowing transactions | 26,237 | 40,793
Loans | 2,458 | 7,358
Other assets | 3,490 | 8,544
Due to banks and customer deposits | (331) | (458)
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions | (356) | (14,133)
Short-term borrowings | (4,012) | (6,783)
Long-term debt | (32,874) | (57,919)
Other liabilities | (218) | (888)
Aggregate unpaid principal |  |
Loans |  |
Non-interest-earning loans | 1,352 | 2,213
Financial instruments |  |
Central bank funds sold, securities purchased under resale agreements and securities borrowing transactions | 26,045 | 40,665
Loans | 3,097 | 8,241
Other assets | 5,132 | 10,937
Due to banks and customer deposits | (371) | (562)
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions | (357) | (14,024)
Short-term borrowings | (3,988) | (6,892)
Long-term debt | (36,723) | (71,891)
Other liabilities | (334) | (1,043)
Difference |  |
Loans |  |
Non-interest-earning loans, Difference | (841) | (1,480)
Financial instruments |  |
Central bank funds sold, securities purchased under resale agreements and securities borrowing transactions | 192 | 128
Loans | (639) | (883)
Other assets | (1,642) | (2,393)
Due to banks and customer deposits | 40 | 104
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions | 1 | (109)
Short-term borrowings | (24) | 109
Long-term debt | 3,849 | 13,972
Other liabilities | SFr 116 | SFr 155

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- References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition For interest-bearing deposits from banks, this element represents the portion of the balance sheet assertion valued at fair value by the entity. + References No definition available. + Details
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Namespace Prefix: | cs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition This item represents the aggregate fair value of loans held as assets that are in nonaccrual status for which the fair value option has been elected, if the entity's policy is to recognize interest income separately from other changes in fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (e)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-28 + Details
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- Definition For loans held as assets for which the fair value option has been elected, this item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of those loans that are in nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (e)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-28 + Details
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- Definition Fair value portion of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price. + References No definition available. + Details
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- Definition Fair value portion of federal funds sold and securities borrowed or purchased under agreements to resell. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Publisher FASB -URI https://asc.fasb.org//310-10/tableOfContent + Details
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Data Type: | xbrli:monetaryItemType
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Fair value portion of other assets. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Fair value portion of other liabilities. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. + References No definition available. + Details
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