Loans and Allowance for Credit Losses: Loans and Unfunded Credit Commitments - Activity Relating to our Allowance for Credit Losses for Loans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Change in allowance for credit loss	$ 12
Held-to-maturity, accrued interest receivable	294		$ 294		$ 171
Allowance for credit loss, beginning balance	545	$ 396	422	$ 448
Initial Allowance on PCD Loans						$ 22	$ 22
Charge-offs	(26)	(19)	(66)	(129)
Recoveries	11	8	23	16
Provision (Reduction) for Credit Loss for Loans	30	(9)	184	41
Foreign Currency Translation Adjustments	(3)		(6)
Allowance for credit loss, ending balance	557	398	557	398
Global fund banking
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	89	66	67	46
Initial Allowance on PCD Loans						0	0
Charge-offs	0	0	0	(80)
Recoveries	6	0	6	0
Provision (Reduction) for Credit Loss for Loans	(4)	(7)	18	93
Foreign Currency Translation Adjustments	0		0
Allowance for credit loss, ending balance	91	59	91	59
Investor dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	224	158	146	213
Initial Allowance on PCD Loans						0	0
Charge-offs	(20)	(17)	(53)	(37)
Recoveries	4	5	13	13
Provision (Reduction) for Credit Loss for Loans	25	(8)	126	(51)
Foreign Currency Translation Adjustments	1		2
Allowance for credit loss, ending balance	234	138	234	138
Cash flow dependent and innovation C&I (Commercial and Industrial)
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	130	119	118	125
Initial Allowance on PCD Loans						0	0
Charge-offs	(5)	(1)	(9)	(8)
Recoveries	0	3	0	3
Provision (Reduction) for Credit Loss for Loans	11	(12)	27	(11)
Foreign Currency Translation Adjustments	0		0
Allowance for credit loss, ending balance	136	109	136	109
Private bank
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	45	47	33	53
Initial Allowance on PCD Loans						1	1
Charge-offs	0	(1)	0	(3)
Recoveries	0	0	2	0
Provision (Reduction) for Credit Loss for Loans	2	(16)	12	(20)
Foreign Currency Translation Adjustments	0		0
Allowance for credit loss, ending balance	47	31	47	31
CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	34	0	36	0
Initial Allowance on PCD Loans						17	17
Charge-offs	0	0	0
Recoveries	0	0	0
Provision (Reduction) for Credit Loss for Loans	(7)	23	(9)
Foreign Currency Translation Adjustments	0		0
Allowance for credit loss, ending balance	27	40	27	40
Other C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	12	0	14	0
Initial Allowance on PCD Loans						4	4
Charge-offs	(1)	0	(3)
Recoveries	1	0	1
Provision (Reduction) for Credit Loss for Loans	0	8	0
Foreign Currency Translation Adjustments	0		0
Allowance for credit loss, ending balance	12	12	12	12
Premium wine and other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	11	6	8	9
Initial Allowance on PCD Loans						$ 0	0
Charge-offs	0	0	(1)	(1)
Recoveries	0	0	1	0
Provision (Reduction) for Credit Loss for Loans	3	3	10	1
Foreign Currency Translation Adjustments	(4)		(8)
Allowance for credit loss, ending balance	$ 10	9	$ 10	9
PPP Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				2
Initial Allowance on PCD Loans							$ 0
Charge-offs				0
Recoveries				0
Provision (Reduction) for Credit Loss for Loans				(2)
Allowance for credit loss, ending balance		$ 0		$ 0