XML 82 R70.htm IDEA: XBRL DOCUMENT v3.7.0.1
EBP Benefit Pymts & Defined Contribution Plans (Details 5) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Benefit Plan Disclosure [Line Items]      
Employer's contributions charged to expense under defined contribution plans $ 36 $ 39 $ 39
Other Postretirement Benefits [Member]      
Benefit Plan Disclosure [Line Items]      
Expected total plans contribution, approximate 7    
Expected benefit payments      
2017 13    
2018 13    
2019 13    
2020 13    
2021 13    
2022-2026 62    
Pension Benefits [Member]      
Benefit Plan Disclosure [Line Items]      
Expected total plans contribution, approximate 62    
Expected benefit payments      
2017 99    
2018 103    
2019 103    
2020 106    
2021 111    
2022-2026 562    
Nonqualified Pension Benefits - Supplemental Employee Retirement Benefits [Member]      
Benefit Plan Disclosure [Line Items]      
Expected total plans contribution, approximate 2    
Tax-qualified Pension Benefits [Member]      
Benefit Plan Disclosure [Line Items]      
Expected total plans contribution, approximate $ 60