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Summarized Financial Data - Chevron U.S.A. Inc. - Income Statement (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Sales and other operating revenues | $ 34,779 | $ 42,105 | $ 105,291 | $ 118,564
Costs and other deductions | 32,067 | 38,288 | 96,225 | 108,310
Net income attributable to CUSA | $ 2,580 | $ 4,047 | 9,534 | 11,094
Chevron U.S.A. Inc. |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Sales and other operating revenues |  |  | 82,073 | 93,434
Costs and other deductions |  |  | 79,794 | 90,912
Net income attributable to CUSA |  |  | $ 2,149 | $ 2,929

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