v3.26.3
Supplemental Cash Flow Information (Reconciliation of Additions to Property, Plant and Equipment to Total Capital Expenditures) (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
 [1]
Sep. 30, 2025
 [1]
Sep. 30, 2026
Sep. 30, 2025
Supplemental Cash Flow Elements [Abstract]        
Additions to property, plant and equipment per the Consolidated Statements of Cash Flows     $ 3,226 $ 2,305
Increase in capital accruals     131 105
Capital expenditures $ 1,164 $ 1,057 $ 3,357 [2] $ 2,410 [2]
[1] Includes changes in capital expenditure accruals. See Note 19 for a reconciliation of total capital expenditures to additions to property, plant and equipment for the nine months ended September 30, 2026 and 2025 as reported in the Consolidated Statements of Cash Flows.
[2] The nine months ended September 30, 2026 excludes $62 million of funding to the Martinez Renewables JV due to turnaround costs in the first quarter of 2026 expected to be recovered through subsequent distributions from the JV during 2026.