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Summarized Financial Data - Chevron U.S.A. Inc. - Summary of Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Subsidiary Statements Captions [Line Items]
Current assets	$ 40,911	$ 41,128
Current liabilities	38,558	32,258
Total CUSA net equity	153,157	161,929	$ 160,242	$ 139,940
Chevron U.S.A. Inc.
Subsidiary Statements Captions [Line Items]
Current assets	20,153	19,489
Other assets	58,485	54,460
Current liabilities	25,825	20,624
Other liabilities	21,455	22,227
Total CUSA net equity	31,358	31,098
Memo: Total debt	$ 8,917	$ 9,740

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