Supplemental Cash Flow Information - Schedule of Cash Proceeds from Asset Sales and Other Matters (Details) - USD ($) $ in Millions	1 Months Ended		2 Months Ended	6 Months Ended
	Jan. 31, 2026	Dec. 31, 2025	Jan. 31, 2026	Jun. 30, 2026	Jun. 30, 2025
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups [Line Items]
Proceeds from asset sales and other matters				$ 599	$ 15
Bahia NGL Pipeline
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups [Line Items]
Proceeds from asset sales and other matters	$ 595	$ 60	$ 655
ExxonMobil | Bahia NGL Pipeline
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups [Line Items]
Undivided joint interest, ownership interest sold, percent		40.00%
Bahia NGL Pipeline
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups [Line Items]
Proceeds from asset sales and other matters				595	0
Other asset sales
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups [Line Items]
Proceeds from asset sales and other matters				$ 4	$ 15