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STOCK-BASED INCENTIVE PLANS (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of changes in Occidental's unvested cash- and stock- settled RSUs | A summary of changes in Occidental’s unvested cash- and stock-settled RSUs during the year ended December 31, 2018, is presented below:
|  | Cash-Settled |  | Stock-Settled
|  | RSUs (000's) |  | Weighted-Average Grant-Date Fair Value |  | RSUs (000's) |  | Weighted-Average Grant-Date Fair Value
Unvested at January 1 |  | 269 |  |  |  | $ | 71.58 |  |  |  | 3,951 |  |  |  | $ | 73.24 |  |
Granted |  | 133 |  |  |  | 75.86 |  |  |  | 1,689 |  |  |  | 69.87 |  |
Vested |  | (212 | ) |  |  | 72.23 |  |  |  | (1,469 | ) |  |  | 69.89 |  |
Forfeitures |  | (4 | ) |  |  | 70.06 |  |  |  | (200 | ) |  |  | 70.37 |  |
Unvested at December 31 |  | 186 |  |  |  | 73.93 |  |  |  | 3,971 |  |  |  | 73.19 |  |
Grant-date assumptions used in the Monte Carlo simulation models for the estimated payout level of TSRIs | The grant-date assumptions used in the Monte Carlo simulation models for the estimated payout level of TSRIs were as follows:
|  | TSRIs
Year Granted |  | 2018 |  | 2017 |  | 2016
Assumptions used: |  |  |  |  |  |
Risk-free interest rate |  | 2.3 | % |  | 1.5 | % |  | 0.8 | %
Dividend yield |  | 4.4 | % |  | 4.5 | % |  | 3.9 | %
Volatility factor |  | 24 | % |  | 25 | % |  | 24 | %
Expected life (years) |  | 3 |  |  | 3 |  |  | 3 |
Grant-date fair value of underlying Occidental common stock |  | $ | 69.87 |  |  | $ | 67.21 |  |  | $ | 76.83 |
Summary of the changes of awards | A summary of Occidental’s unvested TSRIs as of December 31, 2018, and changes during the year ended December 31, 2018, is presented below:
|  | TSRIs
|  | Awards (000’s) |  | Weighted-Average Grant-Date Fair Value of Occidental Stock
Unvested at January 1 |  | 1,152 |  |  |  | $ | 71.58 |  |
Granted |  | 448 |  |  |  | 69.87 |  |
Vested (a) |  | (145 | ) |  |  | 72.54 |  |
Forfeitures |  | (11 | ) |  |  | 69.87 |  |
Unvested at December 31 |  | 1,444 |  |  |  | 70.97 |  |
(a) | The payout at vesting was 100% of the target.
|  | CROCEI, ROCEI, and ROAI
|  | Awards (000's) |  | Weighted-Average Grant-Date Fair Value of Occidental Stock
Unvested at January 1 |  | 268 |  |  |  | $ | 84.46 |  |
Granted |  | 80 |  |  |  | 69.87 |  |
Vested (a) |  | (132 | ) |  |  | 101.95 |  |
Forfeited |  | (6 | ) |  |  | 69.87 |  |
Unvested at December 31 |  | 210 |  |  |  | 71.60 |  |
(a) | Presented at the target payouts. The payout at vesting was 97.5% of the target for approximately 6,000 shares. The payout at vesting was 0% of target for the remaining 126,000 shares.
Summary of Option and SAR transactions | The following is a summary of option transactions during the year ended December 31, 2018:
|  | SARs & Options (000's) |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term (yrs) |  | Aggregate Intrinsic Value (000’s)
Beginning balance, January 1 |  | 549 |  |  | $ | 79.98 |  |  |  |  |
Exercised |  | (19 | ) |  | 79.98 |  |  |  |  |
Ending balance, December 31 |  | 530 |  |  | 79.98 |  |  | 3.1 |  | $ | — |
Exercisable at December 31 |  | 530 |  |  | 79.98 |  |  | 3.1 |  | $ | — |

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- Definition Disclosure of significant grant date assumptions used to estimate the fair value of performance based stock awards including grant date stock price, risk-free interest rate, dividend yield, volatility and expected life. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in number of outstanding unvested share-equivalent awards and thee related weighted-average grant-date fair value of the entity's stock fair value. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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