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		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Change in allowance for credit loss	$ 124
Accrued interest receivable	222		$ 222		$ 171
Allowance for credit loss, beginning balance	421	$ 392	422	$ 448
Charge-offs	(22)	(15)	(40)	(110)
Recoveries	2	3	12	8
(Reduction) Provision for Credit Losses	146	16	154	50
Foreign Currency Translation Adjustments	(2)	0	(3)	0
Allowance for credit loss, ending balance	545	396	545	396
Global fund banking
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	66	60	67	46
Charge-offs	0	0	0	(80)
Recoveries	0	0	0	0
(Reduction) Provision for Credit Losses	23	6	22	100
Foreign Currency Translation Adjustments	0	0	0	0
Allowance for credit loss, ending balance	89	66	89	66
Investor dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	148	168	146	213
Charge-offs	(16)	(6)	(33)	(20)
Recoveries	1	3	9	8
(Reduction) Provision for Credit Losses	90	(7)	101	(43)
Foreign Currency Translation Adjustments	1	0	1	0
Allowance for credit loss, ending balance	224	158	224	158
Cash flow dependent and innovation C&I (Commercial and Industrial)
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	115	112	118	125
Charge-offs	(4)	(7)	(4)	(7)
Recoveries	0	0	0	0
(Reduction) Provision for Credit Losses	19	14	16	1
Foreign Currency Translation Adjustments	0	0	0	0
Allowance for credit loss, ending balance	130	119	130	119
Private bank
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	37	44	33	53
Charge-offs	0	(2)	0	(2)
Recoveries	0	0	2	0
(Reduction) Provision for Credit Losses	8	5	10	(4)
Foreign Currency Translation Adjustments	0	0	0	0
Allowance for credit loss, ending balance	45	47	45	47
CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	34		36
Charge-offs	0		0
Recoveries	0		0
(Reduction) Provision for Credit Losses	0		(2)
Foreign Currency Translation Adjustments	0		0
Allowance for credit loss, ending balance	34		34
Other C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	12		14
Charge-offs	(1)		(2)
Recoveries	0		0
(Reduction) Provision for Credit Losses	1		0
Foreign Currency Translation Adjustments	0		0
Allowance for credit loss, ending balance	12		12
Premium wine and other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	9	8	8	9
Charge-offs	(1)	0	(1)	(1)
Recoveries	1	0	1	0
(Reduction) Provision for Credit Losses	5	(2)	7	(2)
Foreign Currency Translation Adjustments	(3)	0	(4)	0
Allowance for credit loss, ending balance	$ 11	6	$ 11	6
PPP Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				2
Charge-offs				0
Recoveries				0
(Reduction) Provision for Credit Losses				(2)
Foreign Currency Translation Adjustments				0
Allowance for credit loss, ending balance		$ 0		$ 0