Deposits - Types and Sources of Deposits (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deposits [Line Items]
Savings and Demand	$ 303,495	$ 261,435
Time	83,170	102,792
Total	386,665	364,227
Private bank and consumer
Deposits [Line Items]
Savings and Demand	192,713	174,577
Time	33,046	30,198
Total	225,759	204,775
Brokered certificates of deposit
Deposits [Line Items]
Savings and Demand	0	0
Time	32,624	30,816
Total	32,624	30,816
Deposit sweep programs
Deposits [Line Items]
Savings and Demand	44,819	37,965
Time	0	0
Total	44,819	37,965
Transaction banking
Deposits [Line Items]
Savings and Demand	65,155	48,618
Time	5,069	5,689
Total	70,224	54,307
Other
Deposits [Line Items]
Savings and Demand	808	275
Time	12,431	36,089
Total	$ 13,239	$ 36,364

Deposits [Line Items]

No definition available.

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- Definition

The amount of savings and demand deposits with no stated maturity.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of time deposit liabilities, including certificates of deposit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

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- Details

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- Details

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