The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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GOODWILL AND CORE DEPOSIT INTANGIBLES - Schedule of Changes in Core Deposit Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Finite-lived Intangible Assets [Roll Forward]
Less: amortization for the period	$ 15	$ 17	$ 47	$ 40
Core deposit intangible
Finite-lived Intangible Assets [Roll Forward]
Core deposit intangibles, beginning balance			312
Less: amortization for the period			47
Core deposit intangibles, ending balance	$ 265		$ 265