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Summarized Financial Data - Chevron U.S.A. Inc. - Summary of Income Statement Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Subsidiary Statements Captions [Line Items]      
Sales and other operating revenues $ 193,414 $ 196,913 $ 235,717
Total costs and other deductions 175,286 171,365 196,578
Net income (loss) attributable to CUSA 17,661 21,369 35,465
Chevron U.S.A. Inc.      
Subsidiary Statements Captions [Line Items]      
Sales and other operating revenues 149,925 152,347 183,032
Total costs and other deductions 145,582 144,482 166,955
Net income (loss) attributable to CUSA $ 4,151 $ 4,598 $ 13,315