Regulatory Capital - Risk-Based Capital Metrics (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Standardized \| JPMorgan Chase Bank, N.A.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital	$ 296,411	$ 294,804
Tier 1 capital	296,414	294,807
Total capital	321,115	317,684
Risk-weighted assets	$ 2,089,553	$ 1,928,039
CET1 capital ratio	14.20%	15.30%
Tier 1 capital ratio	0.142	0.153
Total capital ratio	0.154	0.165
Advanced \| JPMorgan Chase Bank, N.A.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital	$ 296,411	$ 294,804
Tier 1 capital	296,414	294,807
Total capital	304,520	302,732
Risk-weighted assets	$ 1,943,277	$ 1,864,923
CET1 capital ratio	15.30%	15.80%
Tier 1 capital ratio	0.153	0.158
Total capital ratio	0.157	0.162
JPMorgan Chase & Co. \| Standardized
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital	$ 304,146	$ 288,469
Tier 1 capital	324,229	307,630
Total capital	367,011	343,843
Risk-weighted assets	$ 2,177,516	$ 1,981,692
CET1 capital ratio	14.00%	14.60%
Tier 1 capital ratio	0.149	0.155
Total capital ratio	0.169	0.174
JPMorgan Chase & Co. \| Advanced
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital	$ 304,146	$ 288,469
Tier 1 capital	324,229	307,630
Total capital	350,314	328,962
Risk-weighted assets	$ 2,172,742	$ 2,045,249
CET1 capital ratio	14.00%	14.10%
Tier 1 capital ratio	0.149	0.150
Total capital ratio	0.161	0.161

Common Equity Tier 1 Capital as defined by the regulators.

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- Definition

Common Equity Tier 1 Capital divided by risk weighted assets as defined by regulations.

+ References

No definition available.

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- Definition

Amount of total capital as defined by regulatory framework.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

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- Definition

Ratio of total risk-based capital to risk-weighted assets as defined by regulatory framework.

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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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

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Amount of risk-weighted assets as defined by regulatory framework.

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- Definition

Amount of Tier 1 risk-based capital as defined by regulatory framework.

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Ratio of Tier 1 risk-based capital to risk-weighted assets as defined by regulatory framework.

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