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Share-based Compensation and Employee Benefits - Schedule of Expected Payment of Future Benefits and Employer Contributions (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Pension Benefits |
Expected Future Benefit Payments: |
2020 | $ 239
2021 | 230
2022 | 229
2023 | 218
2024 | 212
2025 - 2029 | 939
OPEB |
Expected Future Benefit Payments: |
2020 | 32
2021 | 31
2022 | 30
2023 | 29
2024 | 27
2025 - 2029 | 115
Expected Future Reductions Related to Medicare Prescription Drug, Improvement and Modernization Act of 2003: |
2020 | 1
2021 | 1
2022 | 1
2023 | 1
2024 | 1
2025 - 2029 | $ 6

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