XML 122 R99.htm IDEA: XBRL DOCUMENT v3.10.0.1
Commitments and Contingencies - Commitments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Leases, rights-of-way easements and other      
2019 $ 167    
2020 133    
2021 109    
2022 93    
2023 68    
Thereafter 341    
Total 911    
Other commitments      
2019 220    
2020 174    
2021 147    
2022 122    
2023 107    
Thereafter 181    
Total 951    
Total      
2019 387    
2020 307    
2021 256    
2022 215    
2023 175    
Thereafter 522    
Total 1,862    
Lease expense 199 $ 207 $ 198
Expenses associated with agreements 228 $ 197 $ 157
Agreement to Transport Crude Oil | Equity Method Investees      
Other commitments      
Total $ 750    
Total      
Ownership interest 50.00%