REGULATORY MATTERS (Summary of Actual Capital Amounts and Ratios for the Company and Its Three Largest Subsidiary Banks) (Details) $ in Millions	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Common equity tier 1 capital (to risk-weighted assets), Actual Amount	$ 7,936	$ 7,363
Common equity tier 1 capital (to risk-weighted assets), Capital Ratio	0.115	0.109
Common equity tier 1 capital (to risk-weighted assets), To be well capitalized, Amount	$ 4,494	$ 4,400
Common equity tier 1 capital (to risk-weighted assets), To be well capitalized, Ratio	0.065	0.065
Tier 1 capital (to risk-weighted assets), Actual Amount	$ 8,003	$ 7,430
Tier 1 risk-based capital (to risk-weighted assets), Capital Ratio	0.116	0.110
Tier 1 capital (to risk-weighted assets), To be well capitalized, Amount	$ 5,531	$ 5,415
Tier 1 capital (to risk-weighted assets), To be well capitalized, Ratio	0.080	0.080
Total risk-based capital (to risk-weighted assets), Actual Amount	$ 9,510	$ 9,026
Total risk-based capital (to risk-weighted assets), Capital Ratio	0.138	0.133
Total risk-based capital (to risk-weighted assets), To be well capitalized, Amount	$ 6,914	$ 6,769
Total risk-based capital (to risk-weighted assets), To be well capitalized, Ratio	0.100	0.100
Tier 1 capital (to average assets), Actual Amount	$ 8,003	$ 7,430
Tier 1 capital (to average assets), Actual Ratio	0.090	0.083
Tier 1 capital (to average assets), To be well capitalized, Amount	$ 4,451	$ 4,454
Tier 1 capital (to average assets), To be well capitalized, Ratio	0.050	0.050

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Ratio of minimum Common Equity Tier 1 risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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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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