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Pension and other post-retirement benefits - Contributions (Details 7) - CHF (SFr) SFr in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Defined Contribution Pension and Other Postretirement Plans Disclosure
Contributions made by the Entity to defined contribution pension plans	SFr 66	SFr 63	SFr 60	SFr 129	SFr 130
Bank
Defined Contribution Pension and Other Postretirement Plans Disclosure
Contributions made by the Entity to defined contribution pension plans				SFr 222	SFr 243

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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