Pension and other post-retirement benefits - Estimated future benefit payments (Details 6) - International SFr in Millions	Dec. 31, 2023 CHF (SFr)
Defined benefit pension plans
Estimated future benefit payments
Next twelve months	SFr 111
Year two	108
Year three	112
Year four	107
Year five	103
For five years thereafter	572
Other post-retirement defined benefit plans
Estimated future benefit payments
Next twelve months	7
Year two	9
Year three	8
Year four	8
Year five	7
For five years thereafter	SFr 31

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- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

+ Details

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- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

+ References

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

+ References

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Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

+ References

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Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

+ References

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