General - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Jul. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2022	Mar. 31, 2022
Summary of Significant Accounting Policies [Line Items]
Common stock, outstanding (in shares)		908,077,761	934,074,700		928,963,512	937,190,982
Limited partner interest		49.40%
Non-voting limited partner interest		2.00%
Effective economic interest		51.50%
WES
Summary of Significant Accounting Policies [Line Items]
Non-voting general partner interest		2.30%
Berkshire Hathaway
Summary of Significant Accounting Policies [Line Items]
Common stock, outstanding (in shares)		194,000,000
Discontinued Operations | Ecuador Operations
Summary of Significant Accounting Policies [Line Items]
Loss from discontinued operations			$ 412
Discontinued Operations | Ghana Operations
Summary of Significant Accounting Policies [Line Items]
Loss from discontinued operations				$ 32
Disposed of by Sale, Not Discontinued Operations | WES
Summary of Significant Accounting Policies [Line Items]
Number of limited partner units sold (in units)	10,000,000
Proceeds from sale of limited partner units	$ 253
Gain on sale	$ 62