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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of nonvested restricted stock units activity | A summary of the Company’s nonvested restricted stock for the nine months ended September 30, 2020 is as follows:
| Shares subject to restriction (thousands) |  | Weighted average grant date fair value
Nonvested at December 31, 2019 | 1,664 |  |  | $ | 44.26 |
Granted | 766 |  |  | $ | 34.05 |
Vested | (466) |  |  | $ | 46.00 |
Forfeited | (9) |  |  | $ | 42.23 |
Nonvested at March 31, 2020 | 1,955 |  |  | $ | 39.87 |
Granted | 31 |  |  | $ | 29.67 |
Vested | (75) |  |  | $ | 41.19 |
Forfeited | (24) |  |  | $ | 40.49 |
Nonvested at June 30, 2020 | 1,887 |  |  | $ | 39.65 |
Granted | 9 |  |  | $ | 37.77 |
Vested | (9) |  |  | $ | 38.68 |
Forfeited | (33) |  |  | $ | 39.80 |
Nonvested at September 30, 2020 | 1,854 |  |  | $ | 39.64 |
Schedule of share-based compensation, performance shares award unvested activity | A summary of the status of the Company’s nonvested performance share units for the three and nine months ended September 30, 2020 is as follows:
| Total Stockholder Return |  | Relative Revenue Growth |  | Adjusted Earnings Per Share
| Number of shares (thousands) |  | Weighted average grant date fair value |  | Number of shares (thousands) |  | Weighted average grant date fair value |  | Number of shares (thousands) |  | Weighted average grant date fair value
Nonvested at December 31, 2019 | 240 |  |  | $ | 64.61 |  |  | 240 |  |  | $ | 48.52 |  |  | — |  |  | $ | — |
Granted | 142 |  |  | $ | 28.55 |  |  | 142 |  |  | $ | 34.11 |  |  | 115 |  |  | $ | 34.11 |
Nonvested at March 31, 2020 | 382 |  |  | $ | 48.02 |  |  | 382 |  |  | $ | 41.54 |  |  | 115 |  |  | $ | 34.11 |
Forfeited | (8) |  |  | $ | 50.17 |  |  | (8) |  |  | $ | 42.35 |  |  | (3) |  |  | $ | 34.11 |
Nonvested at June 30, 2020 | 374 |  |  | $ | 47.97 |  |  | 374 |  |  | $ | 41.52 |  |  | 112 |  |  | $ | 34.11 |
Granted | 2 |  |  | $ | 28.55 |  |  | 2 |  |  | $ | 37.77 |  |  | 2 |  |  | $ | 37.77 |
Forfeited | (5) |  |  | $ | 73.11 |  |  | (5) |  |  | $ | 52.64 |  |  | — |  |  | $ | — |
Nonvested at September 30, 2020 | 371 |  |  | $ | 47.60 |  |  | 371 |  |  | $ | 41.35 |  |  | 114 |  |  | $ | 34.16 |
The Company recorded compensation expense for performance share units in the periods presented below:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
(in millions) |  | 2020 |  | 2019 |  | 2020 |  | 2019
Total Stockholder Return |  | $ | 1 |  |  | $ | 2 |  |  | $ | 4 |  |  | $ | 5 |
Relative Revenue Growth |  | 4 |  |  | 3 |  |  | 3 |  |  | 3 |
Adjusted Earnings Per Share |  | — |  |  | — |  |  | 1 |  |  | — |
Total compensation expense |  | $ | 5 |  |  | $ | 5 |  |  | $ | 8 |  |  | $ | 8 |

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