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Noncontrolling Interests (Notes)
3 Months Ended
Mar. 31, 2022
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 and prior to June 18, 2021, a convertible preferred 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% during 2022 and 7% during 2021, and was $186 million and $76 million for the three months ended March 31, 2022 and 2021, respectively. Net income of Charter Holdings attributable to A/N's preferred noncontrolling interest for financial reporting purposes is based on the preferred
dividend which was $38 million for the three months ended March 31, 2021. In June 2021, the Company caused the conversion of all of A/N's Charter Holdings convertible preferred units into Charter Holdings common units.

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)

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