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Noncontrolling Interests (Tables)
 12 Months Ended
Dec. 31, 2019
Noncontrolling Interest [Abstract]  
Schedule of Noncontrolling Interest Purchased
The following table represents Charter Holdings' purchase of Charter Holdings common units from A/N pursuant to the Letter Agreement (see Note 20) and the effect on total shareholders' equity during the years ended December 31, 2019, 2018 and 2017.

 
Year Ended December 31,
 
2019
 
2018
 
2017
Number of units purchased
2,276,906

 
2,125,190

 
4,798,367

Average price per unit
$
388.72

 
$
308.90

 
$
347.03

Amount of units purchased
$
885

 
$
656

 
$
1,665

Decrease in noncontrolling interest based on carrying value
$
(565
)
 
$
(518
)
 
$
(1,187
)
Decrease in additional paid-in-capital, net of tax
$
(240
)
 
$
(104
)
 
$
(295
)
Schedule of effects on statement of shareholders' equity due to ownership changes
Total shareholders' equity was also adjusted during the years ended December 31, 2019, 2018 and 2017 due to changes in Charter Holdings' ownership as follows.

 
Year Ended December 31,
 
2019
 
2018
 
2017
Decrease in noncontrolling interest
$
(226
)
 
$
(72
)
 
$
(362
)
Increase in additional paid-in-capital, net of tax
$
170

 
$
54

 
$
223
Schedule of Noncontrolling Interest Exchanged
The following table represents the exchange of Charter Holdings common units held by A/N for shares of Charter Class A common stock pursuant to the Letter Agreement (see Note 20) and the effect on total shareholders' equity during the year ended December 31, 2017. The exchange of A/N common units resulted in a step-up in the tax-basis of the assets of Charter Holdings which is further discussed in Note 17.

 
Year Ended December 31, 2017
Number of units exchanged
1,263,497

Amount of units exchanged
$
400

Decrease in noncontrolling interest based on carrying value
$
(298
)
Increase in additional paid-in-capital, net of tax and TRA effects
$
265