CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
REVENUES	$ 10,275	$ 10,037	$ 6,161	$ 2,530	$ 2,512	$ 2,450	$ 2,430	$ 2,362	$ 29,003	$ 9,754	$ 9,108
COSTS AND EXPENSES:
Operating costs and expenses (exclusive of items shown separately below)									18,655	6,426	5,973
Depreciation and amortization									6,907	2,125	2,102
Other operating expenses, net									86	89	62
Total costs and expenses									25,648	8,640	8,137
Income from operations	1,439	924	690	302	323	273	269	249	3,355	1,114	971
OTHER EXPENSES:
Interest expense, net									(2,499)	(1,306)	(911)
Loss on extinguishment of debt									(111)	(128)	0
Gain (loss) on financial instruments, net									89	(4)	(7)
Other expense, net									(14)	(7)	0
Total other expenses									(2,535)	(1,445)	(918)
Income (loss) before income taxes									820	(331)	53
Income tax benefit (expense)									2,925	60	(236)
Consolidated net income (loss)									3,745	(271)	(183)
Less: Net income attributable to noncontrolling interests									(223)	0	0
Net income (loss) attributable to Charter shareholders	$ 454	$ 189	$ 3,067	$ (188)	$ (122)	$ 54	$ (122)	$ (81)	$ 3,522	$ (271)	$ (183)
EARNINGS (LOSS) PER COMMON SHARE ATTRIBUTABLE TO CHARTER SHAREHOLDERS:
Basic (in dollars per share)	$ 1.69	$ 0.70	$ 16.73	$ (1.86)	$ (1.21)	$ 0.54	$ (1.21)	$ (0.81)	$ 17.05	$ (2.68)	$ (1.88)
Diluted (in dollars per share)	$ 1.67	$ 0.69	$ 15.17	$ (1.86)	$ (1.21)	$ 0.53	$ (1.21)	$ (0.81)	$ 15.94	$ (2.68)	$ (1.88)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	268,584,368	271,263,259	183,362,776	101,552,093	101,366,476	101,205,400	101,074,644	100,959,008	206,539,100	101,152,647	97,991,915
Diluted (in shares)	272,624,270	275,373,202	205,214,266	101,552,093	101,366,476	102,481,924	101,074,644	100,959,008	234,791,439	101,152,647	97,991,915