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Summarized Financial Data - Chevron U.S.A. Inc. - Summary of Income Statement Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Subsidiary Statements Captions [Line Items] |  |  |  |
Sales and other operating revenues | [1] | $ 158,902 |  |
Sales and other operating revenues | [1] |  | $ 134,674 | $ 110,215
Total costs and other deductions |  | 145,764 | 132,501 | 116,632
Net Income (Loss) Attributable to Chevron Corporation |  | 14,824 | 9,195 | (497)
Chevron U.S.A. Inc. |  |  |  |
Subsidiary Statements Captions [Line Items] |  |  |  |
Sales and other operating revenues |  | 125,076 |  |
Sales and other operating revenues |  |  | 104,054 | 83,715
Total costs and other deductions |  | 121,351 | 103,904 | 87,429
Net Income (Loss) Attributable to Chevron Corporation |  | $ 4,334 | $ 4,842 | $ (1,177)
[1] | 2017 and 2016 include excise, value-added and similar taxes of $7,189 and $6,905, respectively, collected on behalf of third parties. Beginning in 2018, these taxes are netted in "Taxes other than on income" in accordance with Accounting Standards Update (ASU) 2014-09. Refer to Note 25, "Revenue" beginning on page 88.

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