Variable Interest Entities - Consolidated Variable Interest Entities (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 239,879		$ 241,825
Trading assets	448,060		301,245
Investments	145,530		130,629
Loans	178,257		179,286
Other assets	36,941		39,208
Total assets	1,577,153	$ 1,571,386	1,441,799
Liabilities
Other secured financings	14,728		13,946
Customer and other payables	252,342		262,045
Trading liabilities	195,123		191,324
Unsecured short-term borrowings	70,009		60,961
Unsecured long-term borrowings	224,024		247,138
Other liabilities	20,083		21,455
Total liabilities	1,459,876	$ 1,454,893	1,324,610
Total consolidated VIEs | Variable Interest Entity, Primary Beneficiary
Assets
Cash and cash equivalents	382		348
Customer and other receivables	333		7
Trading assets	131		103
Investments	77		101
Loans	310		1,177
Other assets	237		336
Total assets	1,470		2,072
Liabilities
Other secured financings	774		952
Customer and other payables	2		51
Trading liabilities	0		9
Unsecured short-term borrowings	13		58
Unsecured long-term borrowings	15		16
Other liabilities	89		112
Total liabilities	893		1,198
Real estate, credit-related and other investing | Variable Interest Entity, Primary Beneficiary
Assets
Cash and cash equivalents	362		339
Customer and other receivables	0		7
Trading assets	38		42
Investments	77		101
Loans	310		1,177
Other assets	237		336
Total assets	1,024		2,002
Liabilities
Other secured financings	139		170
Customer and other payables	2		51
Trading liabilities	0		9
Other liabilities	89		112
Total liabilities	230		342
Corporate debt and other asset-backed | Variable Interest Entity, Primary Beneficiary
Assets
Cash and cash equivalents	20		9
Trading assets	4		20
Total assets	24		29
Liabilities
Other secured financings	353		482
Total liabilities	353		482
Principal-protected notes | Variable Interest Entity, Primary Beneficiary
Assets
Customer and other receivables	333		0
Trading assets	89		41
Total assets	422		41
Liabilities
Other secured financings	282		300
Unsecured short-term borrowings	13		58
Unsecured long-term borrowings	15		16
Total liabilities	$ 310		$ 374