Annual report pursuant to Section 13 and 15(d)

Benefit Plans - Summary of Restricted Stock Unit and Stock Award Activity (Details)

v3.20.4
Benefit Plans - Summary of Restricted Stock Unit and Stock Award Activity (Details) - Restricted Stock Units (RSUs) and Performance Shares - $ / shares
shares in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Shares      
Nonvested as of beginning of period (in shares) 75 35 31
Awards granted in connection with acquisition (in shares)   48  
Granted (in shares) 37 38 18
Vested (in shares) (32) (38) (13)
Forfeited (in shares) (5) (8) (1)
Nonvested as of end of period (in shares) 75 75 35
Grant Date Fair Value Per Share      
Nonvested as of beginning of period ( in USD per share) $ 5.95 $ 5.50 $ 4.54
Awards granted in connection with acquisition (in USD per shares)   5.83  
Granted ( in USD per share) 6.14 6.01 6.40
Vested ( in USD per share) 5.89 5.53 4.43
Forfeited ( in USD per share) 6.00 5.85 4.99
Nonvested as of end of period ( in USD per share) $ 6.06 $ 5.95 $ 5.50