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Noncontrolling Interest (Tables)
 3 Months Ended
Mar. 31, 2022
Noncontrolling Interest [Abstract]  
Schedule of Noncontrolling Interest Purchased
The following table represents Charter Holdings' purchase of Charter Holdings common units from A/N and the effect on total shareholders' equity during the three months ended March 31, 2022 and 2021.

Three Months Ended March 31,
20222021
Number of units purchased657,268 792,654 
Amount of units purchased$416 $507 
Decrease in noncontrolling interest based on carrying value$(156)$(192)
Decrease in additional paid-in-capital, net of tax$(197)$(237)
Schedule of effects on statement of shareholders' equity due to ownership changes
Total shareholders' equity was also adjusted during the three months ended March 31, 2022 and 2021 due to the changes in Charter Holdings' ownership as follows.

Three Months Ended March 31,
20222021
Decrease in noncontrolling interest $(250)$(175)
Increase in additional paid-in-capital, net of tax$189 $131