v3.3.1.900
Pension And Other Postretirement Benefits (Expected Contribution Pension Benefits And Other Postretirement Benefits) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
Pension Benefits - U.S. [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Contributions expected in 2016 $ 2,000
Benefits payments expected in 2016 1,548
Benefits payments expected in 2017 1,491
Benefits payments expected in 2018 1,411
Benefits payments expected in 2019 1,382
Benefits payments expected in 2020 1,342
Benefits payments expected in 2021-2025 6,594
Pension Benefits - Non-U.S. [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Contributions expected in 2016 525
Benefits payments expected in 2016 1,145
Benefits payments expected in 2017 1,128
Benefits payments expected in 2018 1,178
Benefits payments expected in 2019 1,193
Benefits payments expected in 2020 1,227
Benefits payments expected in 2021-2025 6,359
Gross Other Post Retirement Benefits [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Benefits payments expected in 2016 457
Benefits payments expected in 2017 470
Benefits payments expected in 2018 481
Benefits payments expected in 2019 490
Benefits payments expected in 2020 497
Benefits payments expected in 2021-2025 2,518
Other Postretirement Benefits Medicare Subsidy Receipt [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Benefits payments expected in 2016 24
Benefits payments expected in 2017 25
Benefits payments expected in 2018 26
Benefits payments expected in 2019 28
Benefits payments expected in 2020 29
Benefit payments expected in 2021-2025 $ 170