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Stock-Based Compensation (Table)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Summary of nonvested restricted stock units
A summary of UScellular nonvested restricted stock units and changes during 2022 is presented in the table below:
Common Restricted Stock UnitsNumberWeighted Average Grant Date Fair Value
Nonvested at December 31, 20211,601,000 $35.57 
Granted881,000 $30.35 
Vested(321,000)$45.70 
Forfeited(161,000)$33.10 
Nonvested at December 31, 20222,000,000 $31.84 
Summary of nonvested performance share units
A summary of UScellular's nonvested performance share units and changes during 2022 is presented in the table below:
Common Performance Share UnitsNumberWeighted Average Grant Date Fair Value
Nonvested at December 31, 20211,049,000 $35.17 
Granted487,000 $31.35 
Vested(183,000)$44.44 
Forfeited(105,000)$32.99 
Nonvested at December 31, 20221,248,000 $32.51 
Stock-based compensation
The following table summarizes stock‑based compensation expense recognized during 2022, 2021 and 2020:
Year Ended December 31,202220212020
(Dollars in millions)   
Restricted stock unit awards18 16 21 
Performance share unit awards5 10 10 
Awards under Non-Employee Director compensation plan1 1 1 
Total stock-based compensation expense, before income taxes24 27 32 
Income tax benefit(6)(7)(8)
Total stock-based compensation expense, net of income taxes$18 $20 $24 
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 31,202220212020
(Dollars in millions)   
Selling, general and administrative expense$20 $23 $28 
System operations expense4 4 4 
Total stock-based compensation expense$24 $27 $32