Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Other Comprehensive Income [Abstract]
Consolidated net income	$ 1,992	$ 1,506	$ 10,115
Net impact of interest rate derivative instruments	0	0	5
Foreign currency translation adjustment	2	(1)	1
Consolidated comprehensive income	1,994	1,505	10,121
Less: Comprehensive income attributable to noncontrolling interests	(324)	(276)	(220)
Comprehensive income attributable to Charter shareholders	$ 1,670	$ 1,229	$ 9,901