MAGELLAN ACQUISITION - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Dec. 31, 2023	Sep. 25, 2023	Dec. 31, 2022
Liabilities assumed:
Goodwill (Note G)	$ 4,952		$ 528
Magellan Acquisition
Assets acquired:
Cash and cash equivalents		$ 37
Accounts receivables, net		333
Inventories		348
Other current assets		145
Property, plant and equipment		11,751
Investments in unconsolidated affiliates		922
Intangible assets		1,124
Other assets		116
Total assets acquired		14,776
Liabilities assumed:
Accounts payable		213
Other current liabilities (a)		673
Long-term debt, excluding current maturities		4,013
Other deferred credits and liabilities		187
Total liabilities assumed		5,086
Total identifiable net assets		9,690
Goodwill (Note G)		4,424
Total purchase price		$ 14,114