PREMISES, EQUIPMENT AND SOFTWARE (Schedule of Premises, Equipment and Software, Net) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Land	$ 296	$ 284
Buildings	1,010	980
Furniture and equipment	336	337
Leasehold improvements	132	139
Software	632	585
Total	2,406	2,325
Less accumulated depreciation and amortization	1,043	959
Net book value	1,363	1,366
Capitalized costs not yet depreciating	$ 91	$ 51

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
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-Publisher FASB
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- Definition

Amount before accumulated depreciation of fixtures and equipment. Includes, but is not limited to, machinery, equipment, and engines.

+ References

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- Definition

Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(d))
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- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

+ References

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
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Capitalized Computer Software, Additions, Not Yet Depreciating

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