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Common Stock (Tables) | 9 Months Ended
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Sep. 30, 2021
Common Stock [Abstract] |
Class of Treasury 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 nine months ended September 30, 2021 and 2020.
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
| Shares |  | $ |  | Shares |  | $ |  | Shares |  | $ |  | Shares |  | $
Share buybacks | 4,738,842 |  |  | $ | 3,584 |  |  | 5,466,295 |  |  | $ | 3,250 |  |  | 15,442,417 |  |  | $ | 10,450 |  |  | 11,947,078 |  |  | $ | 6,452 |
Income tax withholding | 104,949 |  |  | 82 |  |  | 186,548 |  |  | 111 |  |  | 572,869 |  |  | 384 |  |  | 769,853 |  |  | 416 |
Exercise cost | 116,961 |  |  |  |  | 180,824 |  |  |  |  | 612,474 |  |  |  |  | 611,499 |  |  |
| 4,960,752 |  |  | $ | 3,666 |  |  | 5,833,667 |  |  | $ | 3,361 |  |  | 16,627,760 |  |  | $ | 10,834 |  |  | 13,328,430 |  |  | $ | 6,868 |
Share buybacks above include shares of Charter Class A common stock purchased from Liberty Broadband Corporation (“Liberty Broadband”) pursuant to the LBB Letter Agreement as follows (see Note 19).
| Three Months Ended September 30, 2021 |  | Nine Months Ended September 30, 2021
Number of shares purchased | 1,200,547 |  |  | 3,962,155 |
Amount of shares purchased | $ | 880 |  |  | $ | 2,642 |

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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
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