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Stock Options and Other Share-Based Compensation (Details 1) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation expense for stock options | $ 137 | $ 271 | $ 312
After tax compensation expense for stock options | 89 | 176 | 203
Compensation expense for stock appreciation rights restricted stock performance units and restricted stock units | 231 | 371 | 32
Compensation expense for stock appreciation rights, restricted stock, performance units and restricted stock units, after tax | 150 | 241 | 21
Cash received in payment for option exercises | 1,100 | 647 | 195
Tax benefits realized for the tax deductions from option exercises | 48 | 21 | 17
Cash paid to settle performance units and stock appreciation rights | $ 187 | 82 | 104
Maximum number of share that may be issued under LTIP (in shares) | 800,468 |  |
Total intrinsic value options exercised | $ 407 | $ 240 | $ 120
Total before-tax compensation cost related to nonvested share-based compensation arrangements | $ 88 |  |
Weighted-average period of recognition of unrecognized compensation cost related to nonvested share-based compensation arrangements | 1 year 4 months 24 days |  |
Shares granted (in shares) | 1,623,526 |  |
Chevron Long-Term Incentive Plan (LTIP) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Maximum number of share that may be issued under LTIP (in shares) | 82,000,000 |  |
For awards issued on or after May 29, 2013, the maximum number of shares that may be in a form other than a stock option, stock appreciation right or award requiring full payment for shares by the award recipient (in shares) | 50,000,000 |  |
Chevron Long-Term Incentive Plan (LTIP) | Maximum | From April 2004 through May 2023 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Maximum number of share that may be issued under LTIP (in shares) | 260,000,000 |  |
Performance Shares and Restricted Stock Units (RSUs) | Chevron Long-Term Incentive Plan (LTIP) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award contractual term (in years) | 3 years |  |
Performance Shares and Restricted Stock Units (RSUs) | Chevron Long-Term Incentive Plan (LTIP), 2017 Issuance |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award contractual term (in years) | 3 years |  |
Stock Options and Stock Appreciation Rights | Chevron Long-Term Incentive Plan (LTIP) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award contractual term (in years) | 10 years |  |
Stock Options and Stock Appreciation Rights | Chevron Long-Term Incentive Plan (LTIP), 2017 Issuance |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award contractual term (in years) | 10 years |  |
Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares outstanding (in shares) | 1,236,500 | 557,415 |
Shares granted (in shares) | 892,991 |  |
Shares vested (in shares) | 96,210 |  |
Snares forfeited (in shares) | 117,696 |  |
Shares vested, fair value | $ 98 |  |
Restricted Stock Units (RSUs) | Chevron Long-Term Incentive Plan (LTIP), 2017 Issuance |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award contractual term (in years) | 5 years |  |
Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares outstanding (in shares) | 3,090,793 | 2,393,428 |
Shares vested (in shares) | 708,192 |  |
Snares forfeited (in shares) | 217,969 |  |
Shares vested, fair value | $ 340 |  |
Stock Appreciation Rights (SARs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares outstanding (in shares) | 4,600,000 |  |
Shares vested, fair value | $ 115 |  |

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- Definition Aggregate cash paid by the entity during the period to settle equity instruments granted under equity-based payment arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Amount of tax benefit from exercise of stock options granted under share-based compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=96867065&loc=SL79508275-113901 + Details
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