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Stock-Based Compensation | 12 Months Ended
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Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Disclosure of Compensation Related Costs, Share-based Payments [Text Block] | STOCK-BASED COMPENSATION The company's Equity Incentive Plan ("EIP"), as amended and restated effective August 31, 2017, provides for equity-based and cash incentive awards to certain employees, directors, and consultants. All outstanding DuPont equity awards as of the Merger date were converted into equity awards with respect to DowDuPont Common Stock. The previous DuPont equity awards were converted into the right to receive 1.2820 shares of DowDuPont Common Stock and had a fair value of approximately $629 million at the Merger closing date, which was included in the total consideration exchanged. The converted DuPont equity awards were measured at their fair value and included $485 million as consideration exchanged and $144 million (includes $23 million of incremental expense as a result of the conversion) that will be amortized to stock compensation expense over the remaining vesting period of the awards. The fair values of the converted awards were based on valuation assumptions developed by management and other information including, but not limited to, historical volatility and dividend yield of DuPont and Dow. DuPont and Dow did not merge their equity and incentive plans as a result of the Merger. Under the amended EIP, the maximum number of shares reserved for the grant or settlement of awards is 110 million shares, provided that each share in excess of 30 million that is issued with respect to any award that is not an option or stock appreciation right will be counted against the 110 million share limit as four and one-half shares. At December 31, 2017, approximately 34 million shares were authorized for future grants under the EIP. The company satisfies stock option exercises and vesting of time-vested restricted stock units ("RSUs") and performance-based restricted stock units ("PSUs") with newly issued shares of DowDuPont Common Stock. The total stock-based compensation cost included in continuing operations within the Consolidated Statement of Operations was $33 million, $85 million, $118 million and $127 million for the period September 1 through December 31, 2017, the period January 1 through August 31, 2017, and the years ended December 31, 2016 and 2015, respectively. The income tax benefits related to stock-based compensation arrangements were $11 million, $29 million, $39 million and $42 million for the period September 1 through December 31, 2017, the period January 1 through August 31, 2017, and the years ended December 31, 2016 and 2015, respectively. The compensation committee determines the long-term incentive mix, including stock options, RSUs and PSUs and may authorize new grants annually. The company estimates expected forfeitures. Stock Options The exercise price of shares subject to option is equal to the market price of DowDuPont's stock on the date of grant. All options vest serially over a three-year period. Stock option awards granted between 2010 and 2015 expire seven years after the grant date and options granted in 2016 and 2017 expire ten years after the grant date. The plan allows retirement-eligible employees to retain any granted awards upon retirement provided the employee has rendered at least six months of service following grant date. The weighted-average grant-date fair value of options granted in the period September 1 through December 31, 2017, the period January 1 through August 31, 2017, and the years ended December 31, 2016 and 2015 was $28.56, $16.65, $13.40, and $11.57, respectively. To measure the fair value of the awards on the date of grant, the company used the Black-Scholes option pricing model and the following assumptions:
Weighted-Average Assumptions | Successor | Predecessor
| For the Period September 1 through December 31, 2017 | For the Period January 1 through August 31, 2017 | For the Year Ended December 31, 2016 | For the Year Ended December 31, 2015
Dividend yield | 2.2 | % | 2.0 | % | 2.6 | % | 2.5 | %
Expected volatility | 23.59 | % | 23.21 | % | 28.27 | % | 22.52 | %
Risk-free interest rate | 2.1 | % | 2.3 | % | 1.8 | % | 1.4 | %
Expected life of stock options granted during period (years) | 7.2 |  | 7.2 |  | 7.2 |  | 5.3 |
In the Successor period, the company determined the dividend yield by dividing the annualized dividend on DowDuPont's Common Stock by the option exercise price. In the Predecessor periods, the company determined the dividend yield by dividing the annual dividend on DuPont's stock by the option exercise price. A historical daily measurement of volatility is determined based on the expected life of the option granted. In the Successor period, the measurement of volatility used DowDuPont stock information after the Merger date, and a weighted average of Dow and DuPont stock information prior to Merger date. In the Predecessor periods, the measurement of volatility used DuPont stock information. The risk-free interest rate is determined by reference to the yield on an outstanding U.S. Treasury note with a term equal to the expected life of the option granted. Expected life is determined by reference to the company's historical experience. The following table summarizes stock option activity for 2017 under the EIP:
Stock Options | 2017
| Number of Shares (in thousands) | Weighted Average Exercise Price (per share) | Weighted Average Remaining Contractual Term (years) | Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2017 (Predecessor) | 15,696 |  | $ | 58.11 |  |  |
Granted | 1,626 |  | 76.18 |  |  |
Exercised | (4,356 | ) | 54.52 |  |  |
Forfeited/Expired | (136 | ) | 60.93 |  |  |
Outstanding at August 31, 2017 1 | 12,830 |  | $ | 61.84 |  | 4.71 | $ | 283,365 |
Exercisable at August 31, 2017 | 8,441 |  | $ | 57.78 |  | 3.37 | $ | 220,716 |
Outstanding at September 1, 2017 (Successor)1 | 16,447 |  | $ | 48.24 |  |  |
Granted | 174 |  | 45.29 |  |  |
Exercised | (702 | ) | 43.07 |  |  |
Forfeited/Expired | (30 | ) | 54.83 |  |  |
Outstanding at December 31, 2017 | 15,889 |  | $ | 48.43 |  | 3.74 | $ | 362,088 |
Exercisable at December 31, 2017 | 10,881 |  | $ | 45.75 |  | 3.06 | $ | 277,163 |
1. | As a result of the Merger, all previous DuPont equity awards were converted into the right to receive 1.2820 shares of DowDuPont Common Stock, as discussed above. As a result, the number of shares outstanding at September 1, 2017 represents the shares as of August 31, 2017 multiplied by the conversion factor.
The aggregate intrinsic values in the table above represent the total pre-tax intrinsic value (the difference between the closing stock price on the last trading day of the period and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their in-the-money options at period end. Total intrinsic value of options exercised for the period September 1 through December 31, 2017, for the period January 1 through August 31, 2017, and for the years ended December 31, 2016 and 2015 were $19 million, $108 million, $86 million and $160 million, respectively. For the period September 1 through December 31, 2017 and for the period January 1 through August 31, 2017, the company realized tax benefits from options exercised of $6 million and $36 million, respectively. As of December 31, 2017, $24 million of total unrecognized pre-tax compensation expense related to non-vested stock options is expected to be recognized over a weighted-average period of 1.86 years. Restricted Stock Units and Performance Deferred Stock The company issues non-vested RSUs that serially vest over a three-year period and, upon vesting, convert one-for-one to DowDuPont Common Stock. A retirement-eligible employee retains any granted awards upon retirement provided the employee has rendered at least six months of service following the grant date. Additional RSUs are also granted periodically to key senior management employees. These RSUs generally vest over periods ranging from two to five years. The fair value of all stock-settled RSUs is based upon the market price of the underlying common stock as of the grant date. The awards have the same terms and conditions as were applicable to such equity awards immediately prior to the Merger closing date. The company grants PSUs to senior leadership. As a result of the Merger, the EIP provisions required PSUs to be converted into RSUs based on the number of PSUs that would vest by assuming that target levels of performance are achieved. Service requirements for vesting in the RSUs replicate those inherent in the exchanged PSUs. Vesting for PSUs granted in 2016 and for the period January 1, 2017 through August 31, 2017 is based upon total shareholder return ("TSR") relative to peer companies. Vesting for PSUs granted in 2015 is equally based upon change in operating net income relative to target and TSR relative to peer companies. Operating net income is net income attributable to DuPont excluding income from discontinued operations after taxes, significant after tax benefits (charges), and non-operating pension and OPEB costs. Non-operating pension and OPEB costs includes all of the components of net periodic benefit cost from continuing operations with the exception of the service cost component. Performance and payouts are determined independently for each metric. The actual award, delivered as DowDuPont Common Stock, can range from zero percent to 200 percent of the original grant. The weighted-average grant-date fair value of PSUs granted for the period January 1 through August 31, 2017, subject to the TSR metric, was $91.56, and estimated using a Monte Carlo simulation. The weighted-average grant-date fair value of the PSUs, subject to the revenue metric, was based upon the market price of the underlying common stock as of the grant date. In accordance with the Merger Agreement, PSUs converted to RSUs based on an assessment of the underlying market conditions in the PSUs at the greater of target or actual performance levels as of the closing date. As the actual performance levels were not in excess of target as of the closing date, all PSUs converted to RSUs based on target and there was no incremental benefit from the Merger Agreement when compared to DuPont’s EIP. In November 2017, DowDuPont granted PSUs to senior leadership that vest partially based on the realization of cost savings in connection with DowDuPont Cost Synergy Program, as well as DowDuPont’s ability to complete the Intended Business Separations. Performance and payouts are determined independently for each metric. The actual award, delivered in DowDuPont Common Stock, can range from zero percent to 200 percent of the original grant. The weighted-average grant date fair value of the PSUs granted in November 2017 of $71.16 was based upon the market price of the underlying common stock as of the grant date. Nonvested awards of RSUs and PSUs are shown below.
| 2017
| Number of Shares (in thousands) | Weighted Average Grant Date Fair Value (per share)
Nonvested at December 31, 2016 (Predecessor) | 3,390 |  | $ | 63.11 |
Granted | 1,124 |  | 76.41 |
Vested | (1,332 | ) | 63.08 |
Forfeited | (104 | ) | 70.69 |
Nonvested at August 31, 2017 1 | 3,078 |  | $ | 67.53 |
Nonvested at September 1, 2017 (Successor)1 | 3,948 |  | $ | 67.06 |
Granted | 412 |  | 70.02 |
Vested | (139 | ) | 67.67 |
Forfeited | (23 | ) | 66.65 |
Nonvested at December 31, 2017 | 4,198 |  | $ | 68.28 |
1. | As a result of the Merger, all previous DuPont equity awards were converted into the right to receive 1.2820 shares of DowDuPont Common Stock, as discussed above. As a result, the number of shares outstanding at September 1, 2017 represents the shares as of August 31, 2017 multiplied by the conversion factor.
The total fair value of stock units vested during for the period September 1 through December 31, 2017, the period January 1 through August 31, 2017, and the years ended December 31, 2016 and 2015 was $9 million, $84 million, $83 million and $64 million, respectively. The weighted-average grant-date fair value of stock units granted for the period September 1 through December 31, 2017, for the period January 1 through August 31, 2017, and for the years ended December 31, 2016 and 2015 was $70.02, $76.41, $59.50, and $71.66, respectively. As of December 31, 2017, $113 million of total unrecognized pre-tax compensation expense related to RSUs and PSUs is expected to be recognized over a weighted average period of 1.73 years. Other Cash-based Awards Other cash-based awards resulted in compensation expense of $83 million, $264 million, $295 million and $179 million for the period September 1 through December 31, 2017, for the period January 1 through August 31, 2017, and for the years ended December 31, 2016 and 2015, respectively, included in income from continuing operations within the Consolidated Statement of Operations.

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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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