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Other Income - Net (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Other Income and Expenses [Abstract] |  |  |
Cost associated with early redemption of long-term debt included in miscellaneous expense | $ 10 |  |
Net Periodic Pension and Post-retirement Benefit Credit | 43 | $ 38 | $ 32
Interest Income | 48 | 32 | 13
Miscellaneous (Expense) Income | (3) | 4 | 8
Total Other Income - Net | $ 88 | $ 74 | $ 53

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