Regulation and Capital Adequacy - CET1, Tier 1 Capital and Tier 2 Capital (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Tier 2 capital
Allowance for credit losses	$ (1,970)	$ 82
Standardized
CET1 capital
Beginning balance	96,254
Common shareholders’ equity	7,263
Impact of CECL transition	(276)
Deduction for goodwill	(2,064)
Deduction for identifiable intangible assets	(1,369)
Other adjustments	(1,758)
Ending balance	98,050	96,254
Tier 1 capital
Beginning balance	106,766
CET1 capital	1,796
Deduction for investments in covered funds	(10)
Ending balance	108,552	106,766
Tier 2 capital
Beginning balance	14,636
Qualifying subordinated debt	(917)
Junior subordinated debt	(94)
Allowance for credit losses	2,297
Other adjustments	36
Ending balance	15,958	14,636
Total capital	124,510	121,402
Advanced
CET1 capital
Beginning balance	96,254
Common shareholders’ equity	7,263
Impact of CECL transition	(276)
Deduction for goodwill	(2,064)
Deduction for identifiable intangible assets	(1,369)
Other adjustments	(1,758)
Ending balance	98,050	96,254
Tier 1 capital
Beginning balance	106,766
CET1 capital	1,796
Deduction for investments in covered funds	(10)
Ending balance	108,552	106,766
Tier 2 capital
Beginning balance	12,051
Qualifying subordinated debt	(917)
Junior subordinated debt	(94)
Allowance for credit losses	0
Other adjustments	1,075
Ending balance	12,115	12,051
Total capital	$ 120,667	$ 118,817