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Employee Benefit Plans - Funded Status Recognized on Balance Sheet (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Defined Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Other assets | $ 117 | $ 102
Other liabilities | (8) | (8)
Net amount recognized as of December 31, | 109 | 94
Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Other assets | 0 | 0
Other liabilities | (5) | (7)
Net amount recognized as of December 31, | $ (5) | $ (7)

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