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Asset Retirement Obligations and Accrued Environmental Costs - Schedule of Change in Overall Asset Retirement Obligation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Balance at January 1 $ 395 $ 309
Accretion of discount 15 14
New obligations 7 22
Acquisition of DCP Midstream Class A Segment, DCP Sand Hills and DCP Southern Hills 168 0
Changes in estimates of existing obligations 17 66
Spending on existing obligations (32) (12)
Foreign currency translation (5) (4)
Balance at December 31 $ 565 $ 395