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Stock Options and Other Share-Based Compensation | 12 Months Ended
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Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock Options and Other Share-Based Compensation | Stock Options and Other Share-Based Compensation Compensation expense for stock options for 2017, 2016 and 2015 was $137 ($89 after tax), $271 ($176 after tax) and $312 ($203 after tax), respectively. In addition, compensation expense for stock appreciation rights, restricted stock, performance shares and restricted stock units was $231 ($150 after tax), $371 ($241 after tax) and $32 ($21 after tax) for 2017, 2016 and 2015, respectively. No significant stock-based compensation cost was capitalized at December 31, 2017, or December 31, 2016. Cash received in payment for option exercises under all share-based payment arrangements for 2017, 2016 and 2015 was $1,100, $647 and $195, respectively. Actual tax benefits realized for the tax deductions from option exercises were $48, $21 and $17 for 2017, 2016 and 2015, respectively. Cash paid to settle performance shares and stock appreciation rights was $187, $82 and $104 for 2017, 2016 and 2015, respectively. Awards under the Chevron Long-Term Incentive Plan (LTIP) may take the form of, but are not limited to, stock options, restricted stock, restricted stock units, stock appreciation rights, performance shares and nonstock grants. From April 2004 through May 2023, no more than 260 million shares may be issued under the LTIP. For awards issued on or after May 29, 2013, no more than 50 million of those shares may be in a form other than a stock option, stock appreciation right or award requiring full payment for shares by the award recipient. For the major types of awards issued before January 1, 2017, the contractual terms vary between three years for the performance shares and restricted stock units, and 10 years for the stock options and stock appreciation rights. For awards issued after January 1, 2017, contractual terms vary between three years for the performance shares and special restricted stock units, 5 years for standard restricted stock units and 10 years for the stock options and stock appreciation rights. Forfeitures for performance shares, restricted stock units, and stock appreciation rights are recognized as they occur. Forfeitures for stock options are estimated using historical forfeiture data dating back to 1990. The fair market values of stock options and stock appreciation rights granted in 2017, 2016 and 2015 were measured on the date of grant using the Black-Scholes option-pricing model, with the following weighted-average assumptions:
| Year ended December 31
| 2017 |  |  |  | 2016 |  |  | 2015 |  |
Expected term in years 1 | 6.3 |  |  |  | 6.3 |  |  | 6.1 |  |
Volatility 2 | 21.7 |  | % |  | 21.7 |  | % | 21.9 |  | %
Risk-free interest rate based on zero coupon U.S. treasury note | 2.2 |  | % |  | 1.6 |  | % | 1.4 |  | %
Dividend yield | 4.2 |  | % |  | 4.5 |  | % | 3.6 |  | %
Weighted-average fair value per option granted | $ | 15.31 |  |  |  | $ | 9.53 |  |  | $ | 13.89 |  |
1 Expected term is based on historical exercise and postvesting cancellation data. 2 Volatility rate is based on historical stock prices over an appropriate period, generally equal to the expected term. A summary of option activity during 2017 is presented below:
| Shares (Thousands) |  | Weighted-Average Exercise Price |  |  | Averaged Remaining Contractual Term (Years) | Aggregate Intrinsic Value |
Outstanding at January 1, 2017 | 112,275 |  |  | $ | 94.99 |  |  |  |  |
Granted | 5,877 |  |  | $ | 117.16 |  |  |  |  |
Exercised | (13,110 | ) |  | $ | 84.86 |  |  |  |  |
Forfeited | (1,277 | ) |  | $ | 105.02 |  |  |  |  |
Outstanding at December 31, 2017 | 103,765 |  |  | $ | 97.40 |  |  | 5.63 |  | $ | 2,883 |
Exercisable at December 31, 2017 | 78,120 |  |  | $ | 98.54 |  |  | 4.82 |  | $ | 2,082 |
The total intrinsic value (i.e., the difference between the exercise price and the market price) of options exercised during 2017, 2016 and 2015 was $407, $240 and $120, respectively. During this period, the company continued its practice of issuing treasury shares upon exercise of these awards. As of December 31, 2017, there was $88 of total unrecognized before-tax compensation cost related to nonvested share-based compensation arrangements granted under the plan. That cost is expected to be recognized over a weighted-average period of 1.4 years. At January 1, 2017, the number of LTIP performance shares outstanding was equivalent to 2,393,428 shares. During 2017, 1,623,526 performance shares were granted, 708,192 shares vested with cash proceeds distributed to recipients and 217,969 shares were forfeited. At December 31, 2017, performance shares outstanding were 3,090,793. The fair value of the liability recorded for these instruments was $340, and was measured using the Monte Carlo simulation method. At January 1, 2017, the number of restricted stock units outstanding was equivalent to 557,415 shares. During 2017, 892,991 restricted stock units were granted, 96,210 units vested with cash proceeds distributed to recipients and 117,696 units were forfeited. At December 31, 2017, restricted stock units outstanding were 1,236,500. The fair value of the liability recorded for the vested portion of these instruments was $98, valued at the stock price as of December 31, 2017. In addition, outstanding stock appreciation rights that were granted under LTIP totaled approximately 4.6 million equivalent shares as of December 31, 2017. The fair value of the liability recorded for the vested portion of these instruments was $115.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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