Financial Instruments And Derivatives - Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Total Gross Assets & Liabilities [Domain]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	$ 4,429	$ 6,275
Advances to/receivables from equity companies	6,633	7,008
Other long-term financial assets	2,972	2,333
Derivative liabilities	4,977	5,664
Long-term debt	30,697	32,560
Long-term obligations to equity companies	1,393	1,896
Other long-term financial liabilities	$ 583	$ 697
Derivative asset, current, statement of financial position [Extensible Enumeration]	Other assets, including intangibles – net, Receivables, Net, Current	Other assets, including intangibles – net, Receivables, Net, Current
Derivative liability, current, statement of financial position [Extensible Enumeration]	Accounts payable and accrued liabilities, Other long-term obligations	Accounts payable and accrued liabilities, Other long-term obligations
Effect Of Counterparty Netting [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	$ (3,913)	$ (5,177)
Derivative liabilities	(3,913)	(5,177)
Effect Of Collateral Netting [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	(3)	(528)
Derivative liabilities	(341)	(40)
Difference In Carrying Value And Fair Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Advances to/receivables from equity companies	451	519
Other long-term financial assets	247	202
Long-term debt	3,935	3,102
Long-term obligations to equity companies	(47)	(92)
Other long-term financial liabilities	57	45
Net Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	513	570
Advances to/receivables from equity companies	7,084	7,527
Other long-term financial assets	3,219	2,535
Derivative liabilities	723	447
Long-term debt	34,632	35,662
Long-term obligations to equity companies	1,346	1,804
Other long-term financial liabilities	640	742
Level 1 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	3,223	4,544
Other long-term financial assets	1,468	1,389
Derivative liabilities	3,561	4,056
Long-term debt	28,884	30,556
Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	1,206	1,731
Advances to/receivables from equity companies	2,466	2,517
Derivative liabilities	1,416	1,608
Long-term debt	1,813	2,004
Level 3 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Advances to/receivables from equity companies	4,167	4,491
Other long-term financial assets	1,504	944
Long-term obligations to equity companies	1,393	1,896
Other long-term financial liabilities	$ 583	$ 697