CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
REVENUES	$ 11,450			$ 10,892			$ 34,003	$ 32,403
COSTS AND EXPENSES:
Operating costs and expenses (exclusive of items shown separately below)	7,435			7,012			21,915	20,721
Depreciation and amortization	2,415			2,482			7,465	7,784
Other operating expenses, net	14			18			71	116
Total costs and expenses	9,864			9,512			29,451	28,621
Income from operations	1,586			1,380			4,552	3,782
OTHER INCOME (EXPENSES):
Interest expense, net	(963)			(901)			(2,833)	(2,630)
Gain (loss) on financial instruments, net	(34)			12			(116)	0
Other pension benefits, net	9			207			27	247
Other expense, net	(5)			(5)			(131)	(75)
Total other income (expense)	(993)			(687)			(3,053)	(2,458)
Income before income taxes	593			693			1,499	1,324
Income tax expense	(126)			(109)			(329)	(178)
Consolidated net income	467	$ 386	$ 317	584	$ 339	$ 223	1,170	1,146
Less: Net income attributable to noncontrolling interests	(80)			(91)			(216)	(212)
Net income attributable to Charter shareholders	$ 387			$ 493			$ 954	$ 934
EARNINGS PER COMMON SHARE ATTRIBUTABLE TO CHARTER SHAREHOLDERS:
Basic (dollars per share)	$ 1.77			$ 2.14			$ 4.30	$ 3.99
Diluted (dollars per share)	$ 1.74			$ 2.11			$ 4.23	$ 3.93
Weighted average common shares outstanding, basic (shares)	218,499,213			230,554,633			221,818,079	234,159,830
Weighted average common shares outstanding, diluted (shares)	222,355,867			233,607,414			225,337,984	237,343,924