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Pension Expected Benefit Payments (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Pension Plans, Defined Benefit [Member] | United States  
Defined Benefit Plan, Expected Future Benefit Payments [Abstract]  
2021  $ 93
2022  88
2023  86
2024  85
2025  83
2026-2030 373
Pension Plans, Defined Benefit [Member] | Foreign Plan [Member]  
Defined Benefit Plan, Expected Future Benefit Payments [Abstract]  
2021  37
2022  40
2023  41
2024  45
2025  47
2026-2030 268
Postretirement Benefits [Member]  
Defined Benefit Plan, Expected Future Benefit Payments [Abstract]  
2021  3
2022  3
2023  2
2024  2
2025  2
2026-2030 $ 11