Common Stock (Notes)

6 Months Ended

Jun. 30, 2019

Common Stock [Abstract]

Common Stock

Common 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 six months ended June 30, 2019 and 2018.

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
	Shares	$		Shares	$		Shares	$		Shares	$
Share buybacks	2,247,279	$	837	5,710,247	$	1,657	4,862,996	$	1,707	7,303,293	$	2,213
Income tax withholding	63,425	24		23,645	7		278,040	94		196,691	68
Exercise cost	90,951			1,752			185,170			6,415
	2,401,655	$	861	5,735,644	$	1,664	5,326,206	$	1,801	7,506,399	$	2,281

As of June 30, 2019, Charter had remaining board authority to purchase an additional $769 million of Charter’s Class A common stock and/or Charter Holdings common units. The Company also withholds shares of its Class A common stock in payment of income tax withholding owed by employees upon vesting of equity awards as well as exercise costs owed by employees upon exercise of stock options.

In 2018, Charter’s board of directors approved the retirement of the then currently held treasury stock and those shares were retired as of December 31, 2018. The Company accounts for treasury stock using the cost method and includes treasury stock as a component of total shareholders’ equity.