Comprehensive Income (Details) - 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
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 467	$ 386	$ 317	$ 584	$ 339	$ 223	$ 1,170	$ 1,146
Foreign currency translation adjustment								(1)
Consolidated comprehensive income								1,145
Less: Comprehensive income attributable to noncontrolling interest								(212)
Comprehensive income attributable to Charter shareholders								$ 933