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Pension and Postretirement Benefit Plans - Future Benefit Payments (Details) - Funded $ in Millions | Dec. 31, 2017 USD ($)
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Qualified and Non-qualified Pension Benefits | United States |
Future Pension and Postretirement Benefit Payments |
2018 Benefit Payments | $ 1,074
2019 Benefit Payments | 1,090
2020 Benefit Payments | 1,102
2021 Benefit Payments | 1,110
2022 Benefit Payments | 1,126
Next five years | 5,724
Qualified and Non-qualified Pension Benefits | International Qualified and Non-qualified Pension Benefits |
Future Pension and Postretirement Benefit Payments |
2018 Benefit Payments | 237
2019 Benefit Payments | 251
2020 Benefit Payments | 260
2021 Benefit Payments | 278
2022 Benefit Payments | 285
Next five years | 1,640
Postretirement Benefits |
Future Pension and Postretirement Benefit Payments |
2018 Benefit Payments | 139
2019 Benefit Payments | 148
2020 Benefit Payments | 157
2021 Benefit Payments | 166
2022 Benefit Payments | 174
Next five years | $ 843

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