Schedule of Consolidated VIEs, Carrying Amounts of Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Variable Interest Entity [Line Items]
Cash and cash equivalents and end of period	$ 2,399	$ 2,189	$ 3,341
Other current assets	958	993
Net property (variable interest entities restricted - 2025: $2,380; 2024: $122)	22,476	22,004
Deferred charges and other assets	1,345	1,228
Total Assets	58,991	57,312
Accrued Liabilities, Current	2,656	2,521
Long-Term Debt (variable interest entities nonrecourse - 2025: $176; 2024: $—)	16,247	15,711
Other noncurrent obligations	6,876	6,637
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net property (variable interest entities restricted - 2025: $2,380; 2024: $122)	2,380	122
Long-Term Debt (variable interest entities nonrecourse - 2025: $176; 2024: $—)	176	0
Variable Interest Entity, Diamond Solutions
Variable Interest Entity [Line Items]
Other current assets	163
Net property (variable interest entities restricted - 2025: $2,380; 2024: $122)	2,259
Deferred charges and other assets	196
Total Assets	2,618
Accrued Liabilities, Current	338
Long-Term Debt (variable interest entities nonrecourse - 2025: $176; 2024: $—)	176
Other noncurrent obligations	316
Total Liabilities	830
Variable Interest Entity, Other Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents and end of period	9	22
Other current assets	275	250
Net property (variable interest entities restricted - 2025: $2,380; 2024: $122)	121	122
Deferred charges and other assets	16	15
Total Assets	421	409
Accrued Liabilities, Current	27	24
Other noncurrent obligations	13	13
Total Liabilities	40	37
Total Restricted Assets	$ 183	$ 192