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Summarized Financial Data - Tengizchevroil LLP (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Affiliate Statements Captions [Line Items]        
Sales and other operating revenues $ 48,169 $ 48,926 $ 138,645 $ 145,080
Net Income (Loss) $ 3,613 $ 4,496 $ 9,640 14,490
Tengizchevroil LLP        
Affiliate Statements Captions [Line Items]        
Percentage of affiliate by summarized financial information 100.00%   100.00%  
Sales and other operating revenues     $ 17,101 14,857
Costs and other deductions     14,101 8,200
Net Income (Loss)     $ 2,209 $ 4,727
Tengizchevroil LLP        
Affiliate Statements Captions [Line Items]        
Equity ownership, percentage 50.00%   50.00%