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Common Stock (Notes)
6 Months Ended
Jun. 30, 2023
Common Stock [Abstract]  
Common Stock Common Stock
The following represents the Company's purchase of Charter Class A common stock and the effect on the consolidated statements of cash flows during the three and six months ended June 30, 2023 and 2022.

Three Months Ended June 30, Six Months Ended June 30,
2023202220232022
Shares$Shares$Shares$Shares$
Share buybacks 954,330 $324 7,264,833 $3,675 3,258,749 $1,187 12,590,427 $6,847 
Income tax withholding4,999 24,630 12 132,814 51 289,475 173 
Exercise cost13,111 80,826 53,792 229,483 
972,440 $326 7,370,289 $3,687 3,445,355 $1,238 13,109,385 $7,020 

Share buybacks above include shares of Charter Class A common stock purchased from Liberty Broadband Corporation (“Liberty Broadband”) as follows.

Three Months Ended June 30, Six Months Ended June 30,
2023202220232022
Number of shares purchased— 2,257,443 120,149 3,227,684 
Amount of shares purchased$— $1,204 $42 $1,806 

As of June 30, 2023, Charter had remaining board authority to purchase an additional $482 million of Charter’s Class A common stock and/or Charter Holdings common units, excluding purchases from Liberty Broadband. The Company also withholds shares of its Class A common stock in payment of income tax withholding owed by employees upon vesting of equity awards as well as exercise costs owed by employees upon exercise of stock options.
In 2022, Charter’s board of directors approved the retirement of the then currently held treasury stock and those shares were retired as of December 31, 2022. The Company accounts for treasury stock using the cost method and includes treasury stock as a component of total shareholders’ equity.