XML 137 R116.htm IDEA: XBRL DOCUMENT v3.3.1.900
Postretirement Plans (Schedule Of Estimated Future Benefit Payments) (Details)
$ in Millions
Dec. 31, 2015
USD ($)
Pension Plans [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Expected future benefit payments, 2016 $ 4,311
Expected future benefit payments, 2017 4,419
Expected future benefit payments, 2018 4,479
Expected future benefit payments, 2019 4,451
Expected future benefit payments, 2020 4,488
Expected future benefit payments, 2021-2025 22,724
Other Postretirement Benefits Plans [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Expected future benefit payments, 2016 483
Expected future benefit payments, 2017 508
Expected future benefit payments, 2018 536
Expected future benefit payments, 2019 558
Expected future benefit payments, 2020 589
Expected future benefit payments, 2021-2025 2,962
Gross benefits paid, 2016 521
Gross benefits paid, 2017 546
Gross benefits paid, 2018 574
Gross benefits paid, 2019 595
Gross benefits paid, 2020 626
Gross benefits paid, 2021-2025 3,139
Subsidies, 2016 (38)
Subsidies, 2017 (38)
Subsidies, 2018 (38)
Subsidies, 2019 (37)
Subsidies, 2020 (37)
Subsidies, 2021-2025 $ (177)