XML 87 R64.htm IDEA: XBRL DOCUMENT v3.10.0.1
Commitments - Gathering, Processing and Transportation Agreements and Service Contract (Details)
$ in Millions
Dec. 31, 2018
USD ($)
Gathering, Processing and Transportation Agreement [Member]  
Other Commitment, Fiscal Year Maturity [Abstract]  
2019 $ 832
2020 774
2021 683
2022 581
2023 470
2024 – 2034 2,431
Total 5,771
Service Contract [Member]  
Other Commitment, Fiscal Year Maturity [Abstract]  
2019 5
2020 5
2021 5
Total $ 15