Loans - Wholesale Loan Portfolio, Nonaccrual (Details) - Wholesale - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
With an allowance	$ 1,398	$ 1,345
Without an allowance	813	618
Total nonaccrual loans	2,211	1,963
Secured by real estate
Financing Receivable, Nonaccrual [Line Items]
With an allowance	219	172
Without an allowance	119	74
Total nonaccrual loans	338	246
Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
With an allowance	795	686
Without an allowance	468	332
Total nonaccrual loans	1,263	1,018
Other
Financing Receivable, Nonaccrual [Line Items]
With an allowance	384	487
Without an allowance	226	212
Total nonaccrual loans	$ 610	$ 699

Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Related Allowance

No definition available.

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Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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