Fair Value Measurements Concentration of Credit Risk (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Concentration Risk [Line Items]
Receivables, Net, Current	$ 1,655	$ 2,723
NGLs, natural gas, and related products and services [Member]
Concentration Risk [Line Items]
Receivables, Net, Current	589	505
Transportation of natural gas and related products [Member]
Concentration Risk [Line Items]
Receivables, Net, Current	310	311
Marketing Of Natural Gas And NGLs
Concentration Risk [Line Items]
Receivables, Net, Current	321	858
Oil and Gas, Exploration and Production
Concentration Risk [Line Items]
Receivables, Net, Current	72	97
Accounts Receivable related to revenues from contracts with customers [Member]
Concentration Risk [Line Items]
Receivables, Net, Current	1,292	1,771
Derivative Receivables
Concentration Risk [Line Items]
Receivables, Net, Current	311	889
Other Receivable [Member]
Concentration Risk [Line Items]
Receivables, Net, Current	$ 52	$ 63