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Stock Options and Other Share-Based Compensation - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Jan. 01, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for stock options	$ 73	$ 90	$ 85
After tax compensation expense for stock options	56	68	65
Compensation expense for stock appreciation rights restricted stock performance units and restricted stock units	399	510	(100)
Compensation expense for stock appreciation rights, restricted stock, performance units and restricted stock units, after tax	303	388	(76)
Cash received in payment for option exercises	374	356	263
Tax benefits realized for the tax deductions from option exercises	29	24	20
Cash paid to settle performance units and stock appreciation rights	$ 405	395	566
Shares remaining available for issuance (in shares)	537,174
Options exercised	$ 227	$ 190	$ 167
Nonvested share-based compensation arrangements granted	$ 379
Weighted-average period	1 year 8 months 12 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	5,430,555			5,399,798
Shares granted (in shares)	1,905,275
Shares vested (in shares)	1,449,539
Shares forfeited (in shares)	424,979
Shares vested, fair value	$ 342
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	3,634,155			3,859,439
Shares granted (in shares)	1,502,047
Shares vested (in shares)	1,379,521
Shares forfeited (in shares)	347,810
Shares vested, fair value	$ 65
Performance Shares Payable In Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	1,681,470
Performance Shares In Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	1,952,685
Restricted Stock Units Payable In Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	2,711,265
Restricted Stock Units Payable In Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	2,719,290
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	412,784
Shares vested, fair value	$ 18
Chevron Long-Term Incentive Plan (LTIP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remaining available for issuance (in shares)	93,000,000
Maximum number of shares that may not be a stock option, stock appreciation right or award (in shares)	48,000,000
Chevron Long-Term Incentive Plan (LTIP), 2017 Issuance \| Performance Shares and Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award contractual term (in years)	3 years
Chevron Long-Term Incentive Plan (LTIP), 2017 Issuance \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award contractual term (in years)	5 years
Chevron Long-Term Incentive Plan (LTIP), 2017 Issuance \| Stock Options and Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award contractual term (in years)	10 years
Chevron Long-Term Incentive Plan (LTIP), 2023 Issuance \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
From May 2022 through May 2032 \| Chevron Long-Term Incentive Plan (LTIP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remaining available for issuance (in shares)	104,000,000