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Employee Benefit Plans - Funded Status Recognized on Balance Sheet (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Defined Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Other assets | $ 100 | $ 71
Other liabilities | (11) | (10)
Net amount recognized as of December 31, | 89 | 61
Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Other assets | 0 | 0
Other liabilities | (21) | (23)
Net amount recognized as of December 31, | $ (21) | $ (23)

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