v3.19.3.a.u2
Pension And Other Postretirement Benefits (Expected Contribution Pension Benefits And Other Postretirement Benefits) (Details)
$ in Millions
Dec. 31, 2019
USD ($)
U.S. [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Contributions expected in 2020 $ 1,030
Benefits payments expected in 2020 1,440
Benefits payments expected in 2021 1,339
Benefits payments expected in 2022 1,330
Benefits payments expected in 2023 1,328
Benefits payments expected in 2024 1,327
Benefits payments expected in 2025-2029 6,512
Pension Benefits - Non-U.S. [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Contributions expected in 2020 515
Benefits payments expected in 2020 1,171
Benefits payments expected in 2021 1,162
Benefits payments expected in 2022 1,177
Benefits payments expected in 2023 1,199
Benefits payments expected in 2024 1,221
Benefits payments expected in 2025-2029 6,125
Gross Other Post Retirement Benefits [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Benefits payments expected in 2020 444
Benefits payments expected in 2021 445
Benefits payments expected in 2022 443
Benefits payments expected in 2023 440
Benefits payments expected in 2024 438
Benefits payments expected in 2025-2029 2,196
Other Postretirement Benefits Medicare Subsidy Receipt [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Benefits payments expected in 2020 20
Benefits payments expected in 2021 21
Benefits payments expected in 2022 22
Benefits payments expected in 2023 23
Benefits payments expected in 2024 24
Benefit payments expected in 2025-2029 $ 132