Regulatory Capital - Leverage-Based Regulatory Requirements (Details) - Well-capitalized ratios	Jun. 30, 2026	Dec. 31, 2025
BHC
Minimum leverage-based capital ratios
Tier 1 leverage	0.040	0.040
SLR	4.30%	5.00%
Well capitalized leverage-based capital ratios
SLR, minimum requirement	0.030	0.030
SLR, supplementary leverage buffer requirements	1.25%	2.00%
IDI
Minimum leverage-based capital ratios
Tier 1 leverage	0.040	0.040
SLR	4.00%	6.00%
Well capitalized leverage-based capital ratios
Tier 1 leverage	0.050	0.050
SLR	0.040	0.060
SLR, minimum requirement	0.030	0.030
SLR, supplementary leverage buffer requirements	1.00%	3.00%

Leverage -based Capital Ratios

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Supplementary Leverage Ratio Required For Capital Adequacy To Average Assets

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Supplementary Leverage Ratio Required For Capital Adequacy To Average Assets, Supplementary Leverage Buffer

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Well Capitalized Leverage Ratios

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Ratio of minimum Tier 1 risk-based capital to total leverage exposure required for capital adequacy 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 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B

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-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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Ratio of minimum Tier 1 risk-based capital to total leverage exposure categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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-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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Ratio of minimum Tier 1 leverage capital to average assets required for capital adequacy as defined by regulatory framework.

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