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STOCK-BASED INCENTIVE PLANS (Tables) | 12 Months Ended
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Dec. 31, 2019
Share-based Payment Arrangement [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, 2019, is presented below:
|  | Cash-Settled |  | Stock-Settled
thousands, except fair values |  | RSUs |  |  | Weighted-Average Grant-Date Fair Value |  |  | RSUs |  |  | Weighted-Average Grant-Date Fair Value |
Unvested at January 1 |  | 186 |  |  |  | $ | 73.93 |  |  | 3,971 |  |  |  | $ | 73.19 |
Granted (a) |  | 4,267 |  |  |  | $ | 42.62 |  |  | 3,543 |  |  |  | $ | 58.73 |
Vested |  | (67 | ) |  |  | $ | 72.26 |  |  | (2,743 | ) |  |  | $ | 67.04 |
Forfeitures |  | (39 | ) |  |  | $ | 47.60 |  |  | (376 | ) |  |  | $ | 67.25 |
Unvested at December 31 |  | 4,347 |  |  |  | $ | 43.46 |  |  | 4,395 |  |  |  | $ | 65.88 |
(a) Included 1.5 million shares issued in exchange for Anadarko stock-based incentive shares.
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
|  | 2019 |  |  | 2018 |  |  | 2017 |
Assumptions used: |  |  |  |  |  |
Risk-free interest rate |  | 2.5 | % |  | 2.3 | % |  | 1.5 | %
Volatility factor |  | 22 | % |  | 24 | % |  | 25 | %
Expected life (years) |  | 3 |  |  | 3 |  |  | 3 |
Grant-date fair value of underlying Occidental common stock |  | $ | 67.19 |  |  | $ | 69.87 |  |  | $ | 67.21 |
Summary of the changes of awards |
|  | CROCEI, ROCEI, and ROAI
thousands, except fair values |  | Awards |  |  | Weighted-Average Grant-Date Fair Value of Occidental Stock |
Unvested at January 1 |  | 210 |  |  |  | $ | 71.60 |
Granted |  | 81 |  |  |  | $ | 67.19 |
Vested (a) |  | (137 | ) |  |  | $ | 72.54 |
Forfeited |  | — |  |  |  | — |
Unvested at December 31 |  | 154 |  |  |  | $ | 68.44 |
(a) Presented at the target payouts. The weighted-average payout at vesting was 86% of the target resulting in the issuance of approximately 118,000 shares. A summary of Occidental’s unvested TSRIs as of December 31, 2019 and changes during the year ended December 31, 2019 is presented below:
|  | TSRIs
thousands, except fair values |  | Awards |  |  | Weighted-Average Grant-Date Fair Value of Occidental Stock |
Unvested at January 1 |  | 1,444 |  |  |  | $ | 70.97 |
Granted |  | 578 |  |  |  | $ | 67.19 |
Vested (a) |  | (442 | ) |  |  | $ | 76.83 |
Forfeitures |  | (43 | ) |  |  | $ | 76.83 |
Unvested at December 31 |  | 1,537 |  |  |  | $ | 67.70 |
(a) Presented at the target payouts. The weighted-average payout at vesting was 19% of the target, resulting in the issuance of approximately 83,000 shares of Occidental common stock.

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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=116856206&loc=d3e5070-113901 + Details
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