XML 90 R73.htm IDEA: XBRL DOCUMENT v3.10.0.1
EBP Benefit Pymts & Defined Contribution Plans (Details 5) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Expected benefit payments      
Employer's contributions charged to expense under defined contribution plans $ 35 $ 34 $ 36
Other Postretirement Benefits [Member]      
Benefit Plan Disclosure [Line Items]      
Expected total plans contribution, approximate 6    
Expected benefit payments      
2019 14    
2020 14    
2021 13    
2022 14    
2023 14    
2024-2028 59    
Pension Benefits [Member]      
Benefit Plan Disclosure [Line Items]      
Expected total plans contribution, approximate 63    
Expected benefit payments      
2019 85    
2020 87    
2021 90    
2022 90    
2023 89    
2024-2028 467    
Nonqualified Plan [Member]      
Benefit Plan Disclosure [Line Items]      
Expected total plans contribution, approximate 3    
Qualified Plan [Member]      
Benefit Plan Disclosure [Line Items]      
Expected total plans contribution, approximate $ 60