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Noncontrolling Interests (Notes)
3 Months Ended
Mar. 31, 2023
Noncontrolling Interests [Abstract]  
Noncontrolling Interests Noncontrolling Interests
Noncontrolling interests represents consolidated subsidiaries of which the Company owns less than 100%. The Company is a holding company whose principal asset is a controlling equity interest in Charter Holdings, the indirect owner of the Company’s cable systems. Noncontrolling interests on the Company’s balance sheet consist primarily of Advance/Newhouse Partnership's (“A/N”) equity interests in Charter Holdings, which is comprised of a common ownership interest.

Net income of Charter Holdings attributable to A/N’s common noncontrolling interest for financial reporting purposes is based on the weighted average effective common ownership interest of approximately 11%, and was $162 million and $186 million for the three months ended March 31, 2023 and 2022, respectively.
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, 2023 and 2022.

Three Months Ended March 31,
20232022
Number of units purchased324,100 657,268 
Amount of units purchased$122 $416 
Decrease in noncontrolling interest based on carrying value$(68)$(156)
Decrease in additional paid-in-capital, net of tax$(40)$(197)

Total shareholders' equity was also adjusted during the three months ended March 31, 2023 and 2022 due to the changes in Charter Holdings' ownership as follows.

Three Months Ended March 31,
20232022
Decrease in noncontrolling interest $(37)$(250)
Increase in additional paid-in-capital, net of tax$28 $189