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Employee Benefit Plans - Estimated Future Benefit Payments (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2019 | $ 158
2020 | 159
2021 | 160
2022 | 162
2023 | 164
2024 - 2028 | 823
U.S. Pension Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2019 | 108
2020 | 110
2021 | 111
2022 | 114
2023 | 115
2024 - 2028 | 579
International Pension Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2019 | 50
2020 | 49
2021 | 49
2022 | 48
2023 | 49
2024 - 2028 | 244
Postretirement Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2019 | 2
2020 | 2
2021 | 1
2022 | 1
2023 | 1
2024 - 2028 | 3
Postemployment Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2019 | 50
2020 | 17
2021 | 16
2022 | 15
2023 | 14
2024 - 2028 | $ 60

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