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Goodwill and Core Deposit Intangibles - Schedule of Core Deposit Intangibles, Future Amortization Expense (Details) - Core Deposits
$ in Millions
Mar. 31, 2023
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Remainder 2023 $ 52
2024 63
2025 54
2026 46
2027 39
2028 34
Thereafter 76
Balance, net of accumulated amortization $ 364