Stock-Based Compensation

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

We issue stock-based incentive awards to our eligible employees under the 2019 Stock Incentive Plan ("2019 Plan") and to our eligible non-employee Directors under a Director Deferred Stock Ownership Plan. The 2019 Plan permits the granting of incentive stock options, nonqualified stock options, stock appreciation rights, performance stock, restricted stock and other stock-based awards.

For the three and nine months ended September 30, 2020 and 2019, total stock-based compensation expense primarily related to restricted stock and unit awards was $38 million and $60 million, respectively, and $20 million and $53 million, respectively. Total unrecognized compensation expense related to unvested restricted stock and unit awards as of September 30, 2020 was $100 million, which is expected to be recognized over a weighted average period of 1.9 years.