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Stock-Based Compensation (Table)
12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Summary of nonvested restricted stock units
A summary of UScellular nonvested restricted stock units and changes during 2021 is presented in the table below:
Common Restricted Stock UnitsNumberWeighted Average Grant Date Fair Value
Nonvested at December 31, 20201,660,000 $36.43 
Granted672,000 $36.68 
Vested(609,000)$39.10 
Forfeited(122,000)$35.77 
Nonvested at December 31, 20211,601,000 $35.57 
Summary of nonvested performance share units
A summary of UScellular's nonvested performance share units and changes during 2021 is presented in the table below:
Common Performance Share UnitsNumberWeighted Average Grant Date Fair Value
Nonvested at December 31, 20201,305,000 $36.60 
Granted394,000 $37.67 
Vested(601,000)$39.50 
Change in units based on approved performance factors42,000 $28.94 
Forfeited(91,000)$35.13 
Nonvested at December 31, 20211,049,000 $35.17 
Stock-based compensation
The following table summarizes stock‑based compensation expense recognized during 2021, 2020 and 2019:
Year Ended December 31,202120202019
(Dollars in millions)   
Restricted stock unit awards16 21 22 
Performance share unit awards10 10 18 
Awards under Non-Employee Director compensation plan1 
Total stock-based compensation expense, before income taxes27 32 41 
Income tax benefit(7)(8)(10)
Total stock-based compensation expense, net of income taxes$20 $24 $31 
Stock-based compensation, allocation by financial statement line item
The following table provides a summary of the classification of stock-based compensation expense included in the Consolidated Statement of Operations for the years ended:
December 31,202120202019
(Dollars in millions)   
Selling, general and administrative expense$23 $28 $36 
System operations expense4 
Total stock-based compensation expense$27 $32 $41