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Employee Benefit Plans - Schedule of Accrued Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Deferred Compensation Liability, Current and Noncurrent [Roll Forward] |  |
Benefits forfeited | $ 0 | $ 0
Additional Benefits for Executives, Directors, and Officers |  |
Deferred Compensation Liability, Current and Noncurrent [Roll Forward] |  |
Beginning balance | 36 | 39
Accrued liability of acquired banks | 0 | 2
Discount rate adjustment | 0 | (2)
Benefit expense and interest cost | 2 | 2
Benefits paid | (4) | (5)
Ending balance | $ 34 | $ 36
Discount rate at December 31 | 5.09% | 4.67%

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- Details
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