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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation for Continuing Operations

Stock compensation consisted of the following:

 

      Years Ended December 31,  
      2019       2018  
      (In millions)  
Stock compensation expense   $     $  

Summary of Stock Option Activity

The following table summarizes our stock option activity:

 

    Stock Options     Weighted Average Exercise Price     Weighted Average Remaining Contractual Life (Years)  
Outstanding December 31, 2017     947     $ 16,962.00       1.8  
Canceled     (834 )     16,992.00          
Outstanding December 31, 2018     113     $ 16,734.00       0.2  
Canceled     (113 )     16,734.00       0.2  
Granted     1,360       106.00       9.7  
Vested     (481 )     106.00       9.7  
Outstanding December 31, 2019     879     $ 106.00       9.7  
Exercisable as of December 31, 2019     481     $ 106.00       9.7  

Summary of Restricted Stock Activity

The following table summarizes our restricted stock activity:

 

    Restricted Stock     Weighted
Average Grant
Date Fair Value Per Share
 
Nonvested as of December 31, 2017     1,070     $ 706.00  
Granted     801       226.00  
Vested     (1,491 )     336.00  
Forfeited     (230 )     972.00  
Nonvested as of December 31, 2018     150     $ 1,406.00  
Vested     (75 )     1,406.00  
Forfeited     (75 )     1,406.00  
Nonvested as of December 31, 2019         $