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Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets
At September 30, 2024, intangible assets consisted of the following:

September 30, 2024December 31, 2023
(in millions)Gross Carrying AmountAccumulated AmortizationNet Carrying ValueGross Carrying AmountAccumulated AmortizationNet Carrying Value
Core deposit intangible$700 $(201)$499 $700 $(113)$587 
Other intangible assets51(31)2056(18)38
Total other intangible assets$751 $(232)$519 $756 $(131)$625 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
The estimated amortization expense of core deposit intangibles and other intangible assets for the next five years is as follows:

(in millions)Amortization Expense
2024$32 
2025106 
202693 
202780 
202868 
2029 and beyond
140 
Total$519