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Long-term debt - Maturities (Details 2) SFr in Millions, ¥ in Billions	Dec. 31, 2022 CHF (SFr)	Dec. 31, 2022 JPY (¥)	Dec. 31, 2021 CHF (SFr)
Long-term debt by maturities
Next twelve months	SFr 28,154
Year two	22,456
Year three	22,030
Year four	19,929
Year five	12,269
Thereafter	52,397
Long-term debt	157,235		SFr 166,896
Notes with a contractual maturity of greater than one year, but likelihood of redemption within one year	800
Structured notes
Long-term debt by maturities
Next twelve months	9,380
Year two	7,860
Year three	5,241
Year four	2,893
Year five	3,076
Thereafter	10,475
Long-term debt	38,925		43,126
Structured notes | Equity
Long-term debt by maturities
Long-term debt	21,437		28,681
Structured notes | Fixed income
Long-term debt by maturities
Long-term debt	14,407		11,678
Structured notes | Credit
Long-term debt by maturities
Long-term debt	2,815		2,363
Structured notes | Other
Long-term debt by maturities
Long-term debt	266		404
Group Parent Company, intercompany transactions excluded
Long-term debt by maturities
Next twelve months	7,346
Year two	4,459
Year three	7,924
Year four	10,667
Year five	5,967
Thereafter	27,130
Long-term debt	SFr 63,493
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period One [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	1.00%	1.00%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period One [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	5.50%	5.50%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period Two [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	3.50%	3.50%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period Two [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.00%	6.00%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period Three [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	1.30%	1.30%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period Three [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	3.80%	3.80%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period Four [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	2.10%	2.10%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period Four [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.40%	6.40%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period Five [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.90%	0.90%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Period Five [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	7.00%	7.00%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Thereafter [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.60%	0.60%
Group Parent Company, intercompany transactions excluded | Senior notes | Debt Instrument, Redemption, Thereafter [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	9.00%	9.00%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period One [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	3.90%	3.90%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period One [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	7.50%	7.50%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period Two [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	3.50%	3.50%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period Two [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.30%	6.30%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period Three [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	3.00%	3.00%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period Three [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	7.30%	7.30%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period Four [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.40%	6.40%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period Five [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	5.30%	5.30%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Period Five [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	9.80%	9.80%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Thereafter [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	4.50%	4.50%
Group Parent Company, intercompany transactions excluded | Subordinated | Debt Instrument, Redemption, Thereafter [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	5.10%	5.10%
Group Parent Company, intercompany transactions excluded | Fixed rate | Senior notes
Long-term debt by maturities
Next twelve months	SFr 2,849
Year two	1,192
Year three	6,420
Year four	8,029
Year five	2,270
Thereafter	25,860
Long-term debt	46,620
Group Parent Company, intercompany transactions excluded | Fixed rate | Subordinated
Long-term debt by maturities
Next twelve months	3,496
Year two	2,464
Year three	1,504
Year four	1,153
Year five	2,221
Thereafter	1,270
Long-term debt	12,108
Group Parent Company, intercompany transactions excluded | Variable rate | Senior notes
Long-term debt by maturities
Next twelve months	1,001
Year two	803
Year three	0
Year four	1,485
Year five	1,476
Thereafter	0
Long-term debt	4,765
Group subsidiaries
Long-term debt by maturities
Next twelve months	20,808
Year two	17,997
Year three	14,106
Year four	9,262
Year five	6,302
Thereafter	25,267
Long-term debt	SFr 93,742
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period One [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period One [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	2.20%	2.20%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period Two [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period Two [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	4.80%	4.80%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period Three [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period Three [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	7.30%	7.30%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period Four [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period Four [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	3.30%	3.30%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period Five [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Period Five [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	5.00%	5.00%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Thereafter [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Group subsidiaries | Senior notes | Debt Instrument, Redemption, Thereafter [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	7.30%	7.30%
Group subsidiaries | Subordinated | Debt Instrument, Redemption, Period One [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.50%	6.50%
Group subsidiaries | Subordinated | Debt Instrument, Redemption, Period Two [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.90%	6.90%
Group subsidiaries | Subordinated | Debt Instrument, Redemption, Period Three [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	5.90%	5.90%
Group subsidiaries | Subordinated | Debt Instrument, Redemption, Period Four [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.40%	6.40%
Group subsidiaries | Subordinated | Debt Instrument, Redemption, Period Five [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	5.80%	5.80%
Group subsidiaries | Subordinated | Debt Instrument, Redemption, Thereafter [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	8.50%	8.50%
Group subsidiaries | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Period One [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	2.30%	2.30%
Group subsidiaries | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Period One [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.60%	6.60%
Group subsidiaries | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Period Three [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	1.90%	1.90%
Group subsidiaries | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Thereafter [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Group subsidiaries | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Thereafter [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	10.40%	10.40%
Group subsidiaries | Fixed rate | Senior notes
Long-term debt by maturities
Next twelve months	SFr 4,396
Year two	6,516
Year three	6,574
Year four	5,264
Year five	2,237
Thereafter	13,608
Long-term debt	38,595
Group subsidiaries | Fixed rate | Subordinated
Long-term debt by maturities
Next twelve months	2,201
Year two	21
Year three	15
Year four	37
Year five	14
Thereafter	171
Long-term debt	2,459
Group subsidiaries | Fixed rate | Non-recourse liabilities from consolidated VIEs
Long-term debt by maturities
Next twelve months	804
Year two	0
Year three	219
Year four	0
Year five	0
Thereafter	0
Long-term debt	1,023
Group subsidiaries | Variable rate | Senior notes
Long-term debt by maturities
Next twelve months	13,297
Year two	11,451
Year three	7,171
Year four	3,961
Year five	4,010
Thereafter	10,702
Long-term debt	50,592
Group subsidiaries | Variable rate | Non-recourse liabilities from consolidated VIEs
Long-term debt by maturities
Next twelve months	110
Year two	9
Year three	127
Year four	0
Year five	41
Thereafter	786
Long-term debt	1,073
Bank
Long-term debt by maturities
Next twelve months	28,089
Year two	24,005
Year three	23,318
Year four	15,228
Year five	13,310
Thereafter	46,711
Long-term debt	150,661		160,695
Maximum principal amount of notes that can be issued | ¥		¥ 500
Notes with a contractual maturity of greater than one year, but likelihood of redemption within one year	SFr 800
Bank | Senior notes | Debt Instrument, Redemption, Period One [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Bank | Senior notes | Debt Instrument, Redemption, Period One [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	2.20%	2.20%
Bank | Senior notes | Debt Instrument, Redemption, Period Two [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Bank | Senior notes | Debt Instrument, Redemption, Period Two [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	4.80%	4.80%
Bank | Senior notes | Debt Instrument, Redemption, Period Three [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Bank | Senior notes | Debt Instrument, Redemption, Period Three [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	7.30%	7.30%
Bank | Senior notes | Debt Instrument, Redemption, Period Four [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Bank | Senior notes | Debt Instrument, Redemption, Period Four [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	3.30%	3.30%
Bank | Senior notes | Debt Instrument, Redemption, Period Five [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Bank | Senior notes | Debt Instrument, Redemption, Period Five [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	5.00%	5.00%
Bank | Senior notes | Debt Instrument, Redemption, Thereafter [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Bank | Senior notes | Debt Instrument, Redemption, Thereafter [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	7.30%	7.30%
Bank | Subordinated | Debt Instrument, Redemption, Period One [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	1.00%	1.00%
Bank | Subordinated | Debt Instrument, Redemption, Period One [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	8.00%	8.00%
Bank | Subordinated | Debt Instrument, Redemption, Period Two [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	3.50%	3.50%
Bank | Subordinated | Debt Instrument, Redemption, Period Two [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.90%	6.90%
Bank | Subordinated | Debt Instrument, Redemption, Period Three [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	2.60%	2.60%
Bank | Subordinated | Debt Instrument, Redemption, Period Three [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	7.30%	7.30%
Bank | Subordinated | Debt Instrument, Redemption, Period Four [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.90%	0.90%
Bank | Subordinated | Debt Instrument, Redemption, Period Four [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.40%	6.40%
Bank | Subordinated | Debt Instrument, Redemption, Period Five [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	1.00%	1.00%
Bank | Subordinated | Debt Instrument, Redemption, Period Five [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	9.80%	9.80%
Bank | Subordinated | Debt Instrument, Redemption, Thereafter [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.70%	0.70%
Bank | Subordinated | Debt Instrument, Redemption, Thereafter [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	8.50%	8.50%
Bank | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Period One [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	2.30%	2.30%
Bank | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Period One [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	6.60%	6.60%
Bank | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Period Three [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	1.90%	1.90%
Bank | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Thereafter [Member] | Minimum
Long-term debt by maturities
Interest rate (as a percent)	0.00%	0.00%
Bank | Non-recourse liabilities from consolidated VIEs | Debt Instrument, Redemption, Thereafter [Member] | Maximum
Long-term debt by maturities
Interest rate (as a percent)	10.40%	10.40%
Bank | Structured notes
Long-term debt by maturities
Next twelve months	SFr 9,380
Year two	7,860
Year three	5,241
Year four	2,893
Year five	3,076
Thereafter	10,475
Long-term debt	38,925		43,126
Bank | Structured notes | Equity
Long-term debt by maturities
Long-term debt	21,437		28,681
Bank | Structured notes | Fixed income
Long-term debt by maturities
Long-term debt	14,407		11,678
Bank | Structured notes | Credit
Long-term debt by maturities
Long-term debt	2,815		2,363
Bank | Structured notes | Other
Long-term debt by maturities
Long-term debt	266		SFr 404
Bank | Fixed rate | Senior notes
Long-term debt by maturities
Next twelve months	4,394
Year two	6,515
Year three	6,573
Year four	5,261
Year five	2,251
Thereafter	13,598
Long-term debt	38,592
Bank | Fixed rate | Subordinated
Long-term debt by maturities
Next twelve months	7,458
Year two	2,834
Year three	6,060
Year four	5,948
Year five	5,472
Thereafter	8,727
Long-term debt	36,499
Bank | Fixed rate | Non-recourse liabilities from consolidated VIEs
Long-term debt by maturities
Next twelve months	804
Year two	0
Year three	219
Year four	0
Year five	0
Thereafter	0
Long-term debt	1,023
Bank | Variable rate | Senior notes
Long-term debt by maturities
Next twelve months	13,297
Year two	11,451
Year three	7,171
Year four	3,961
Year five	4,010
Thereafter	10,705
Long-term debt	50,595
Bank | Variable rate | Subordinated
Long-term debt by maturities
Next twelve months	2,026
Year two	3,196
Year three	3,168
Year four	58
Year five	1,536
Thereafter	12,895
Long-term debt	22,879
Bank | Variable rate | Non-recourse liabilities from consolidated VIEs
Long-term debt by maturities
Next twelve months	110
Year two	9
Year three	127
Year four	0
Year five	41
Thereafter	786
Long-term debt	SFr 1,073

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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