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FI - Fair value, unfunded commitments, term of redemption conditions (Details 12) - CHF (SFr) SFr in Millions	Dec. 31, 2022	Dec. 31, 2021
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	SFr 515	SFr 581
Redeemable	429	488
Total fair value	944	1,069
Unfunded commitments	177	191
Investments, Fair Value Calculated Using Net Asset Value, Additional Disclosures
Nonredeemable with known Liquidation Periods	276	339
Nonredeemable with unknown Liquidation Periods	239	242
Redeemable on demand with notice period less than 30 days	234	304
Funds held in trading assets and liabilities
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	128	193
Redeemable	415	471
Total fair value	543	664
Unfunded commitments	14	24
Funds held in other investments
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	387	388
Redeemable	14	17
Total fair value	401	405
Unfunded commitments	163	167
Funds held in other investments | Hedge funds
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	13	12
Redeemable	1	2
Total fair value	14	14
Unfunded commitments	1	1
Funds held in other investments | Private equity funds
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	59	40
Redeemable	0	0
Total fair value	59	40
Unfunded commitments	48	42
Funds held in other investments | Equity method investments
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	315	336
Redeemable	13	15
Total fair value	328	351
Unfunded commitments	114	124
Bank
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	514	580
Redeemable	429	488
Total fair value	943	1,068
Unfunded commitments	177	191
Investments, Fair Value Calculated Using Net Asset Value, Additional Disclosures
Nonredeemable with known Liquidation Periods	276	339
Nonredeemable with unknown Liquidation Periods	238	241
Redeemable on demand with notice period less than 30 days	234	304
Bank | Funds held in trading assets and liabilities
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	128	193
Redeemable	415	471
Total fair value	543	664
Unfunded commitments	14	24
Bank | Funds held in other investments
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	386	387
Redeemable	14	17
Total fair value	400	404
Unfunded commitments	163	167
Bank | Funds held in other investments | Hedge funds
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	13	12
Redeemable	1	2
Total fair value	14	14
Unfunded commitments	1	1
Bank | Funds held in other investments | Private equity funds
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	58	39
Redeemable	0	0
Total fair value	58	39
Unfunded commitments	48	42
Bank | Funds held in other investments | Equity method investments
Schedule of Investments, Fair Value Calculated Using Net Asset Value
Non-redeemable	315	336
Redeemable	13	15
Total fair value	328	351
Unfunded commitments	SFr 114	SFr 124

X

- Definition

For investments that do not have readily determinable fair values, this element represents the portion of the investment that is non-redeemable.

+ References

No definition available.

+ Details

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- References

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- References

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- Definition

For investments that do not have readily determinable fair values, this element represents the portion of the investment that is redeemable.

+ References

No definition available.

+ Details

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- Definition

dup_1_For investments that do not have readily determinable fair values, this element represents the portion of the investment that is redeemable, and is attributable to non-controlling Interest.

+ References

No definition available.

+ Details

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- Definition

Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 35
-Paragraph 54B
-URI https://asc.fasb.org/extlink&oid=126972413&loc=SL7495116-110257

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- 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

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- Definition

The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258

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