Subsequent Events (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Apr. 30, 2015	Apr. 01, 2015
Subsequent Event [Line Items]
Principal Amount	$ 21,032	$ 21,092
CCO Holdings [Member] | 5.125% senior notes due May 1, 2023 [Member]
Subsequent Event [Line Items]
Principal Amount			1,150
Stated interest rate (percentage)			5.125%
CCO Holdings [Member] | 5.375% senior notes due May 1, 2025 [Member]
Subsequent Event [Line Items]
Principal Amount			750
Stated interest rate (percentage)			5.375%
CCO Holdings [Member] | 5.875% senior notes due May 1, 2027 [Member]
Subsequent Event [Line Items]
Principal Amount			800
Stated interest rate (percentage)			5.875%
CCO Holdings [Member] | 7.250% senior notes due October 30, 2017 [Member]
Subsequent Event [Line Items]
Principal Amount			1,000
Stated interest rate (percentage)			7.25%
CCO Holdings [Member] | 8.125% senior notes due April 30, 2020 [Member]
Subsequent Event [Line Items]
Principal Amount			700
Stated interest rate (percentage)			8.125%
CCO Holdings [Member] | 7.000% senior notes due January 15, 2019 [Member]
Subsequent Event [Line Items]
Principal Amount			$ 800	$ 1,400
Stated interest rate (percentage)			7.00%