Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 2,908	$ 3,483
Accounts receivable, net	2,091	2,227
Receivables from related party	0	0
Prepaid expenses and other current assets	760	761
Total current assets	5,759	6,471
RESTRICTED CASH	28	66
INVESTMENT IN CABLE PROPERTIES:
Property, plant and equipment, net	34,096	34,591
Customer relationships, net	6,955	7,453
Franchises	67,322	67,322
Goodwill	29,554	29,554
Total investment in cable properties, net	137,927	138,920
INVESTMENT IN SUBSIDIARIES	0	0
LOANS RECEIVABLE – RELATED PARTY	0	0
OTHER NONCURRENT ASSETS	2,838	2,731
Total assets	146,552	148,188
CURRENT LIABILITIES:
Accounts payable and accrued liabilities	8,310	8,885
Payables to related party	0	0
Current portion of long-term debt	4,905	3,500
Total current liabilities	13,215	12,385
LONG-TERM DEBT	74,787	75,578
LOANS PAYABLE – RELATED PARTY	0	0
DEFERRED INCOME TAXES	17,665	17,711
OTHER LONG-TERM LIABILITIES	4,163	3,703
SHAREHOLDERS’/MEMBER’S EQUITY
Controlling interest	29,628	31,445
Noncontrolling interests	7,094	7,366
Total shareholders’/member’s equity	36,722	38,811	$ 43,643	$ 44,272
Total liabilities and shareholders’/member’s equity	146,552	148,188
Eliminations
CURRENT ASSETS:
Cash and cash equivalents	0	0
Accounts receivable, net	0	0
Receivables from related party	(202)	(357)
Prepaid expenses and other current assets	0	0
Total current assets	(202)	(357)
RESTRICTED CASH	0	0
INVESTMENT IN CABLE PROPERTIES:
Property, plant and equipment, net	0	0
Customer relationships, net	0	0
Franchises	0	0
Goodwill	0	0
Total investment in cable properties, net	0	0
INVESTMENT IN SUBSIDIARIES	(177,275)	(180,699)
LOANS RECEIVABLE – RELATED PARTY	(1,572)	(1,504)
OTHER NONCURRENT ASSETS	0	0
Total assets	(179,049)	(182,560)
CURRENT LIABILITIES:
Accounts payable and accrued liabilities	0	0
Payables to related party	(202)	(357)
Current portion of long-term debt	0	0
Total current liabilities	(202)	(357)
LONG-TERM DEBT	0	0
LOANS PAYABLE – RELATED PARTY	(1,572)	(1,504)
DEFERRED INCOME TAXES	0	0
OTHER LONG-TERM LIABILITIES	0	0
SHAREHOLDERS’/MEMBER’S EQUITY
Controlling interest	(177,275)	(180,699)
Noncontrolling interests	0	0
Total shareholders’/member’s equity	(177,275)	(180,699)
Total liabilities and shareholders’/member’s equity	(179,049)	(182,560)
Charter
CURRENT ASSETS:
Cash and cash equivalents	0	0
Accounts receivable, net	0	1
Receivables from related party	18	34
Prepaid expenses and other current assets	4	10
Total current assets	22	45
RESTRICTED CASH	0	0
INVESTMENT IN CABLE PROPERTIES:
Property, plant and equipment, net	0	0
Customer relationships, net	0	0
Franchises	0	0
Goodwill	0	0
Total investment in cable properties, net	0	0
INVESTMENT IN SUBSIDIARIES	47,193	49,024
LOANS RECEIVABLE – RELATED PARTY	278	260
OTHER NONCURRENT ASSETS	2	2
Total assets	47,495	49,331
CURRENT LIABILITIES:
Accounts payable and accrued liabilities	26	18
Payables to related party	0	0
Current portion of long-term debt	0	0
Total current liabilities	26	18
LONG-TERM DEBT	0	0
LOANS PAYABLE – RELATED PARTY	0	0
DEFERRED INCOME TAXES	17,591	17,641
OTHER LONG-TERM LIABILITIES	250	227
SHAREHOLDERS’/MEMBER’S EQUITY
Controlling interest	29,628	31,445
Noncontrolling interests	0	0
Total shareholders’/member’s equity	29,628	31,445
Total liabilities and shareholders’/member’s equity	47,495	49,331
Intermediate Holding Companies
CURRENT ASSETS:
Cash and cash equivalents	248	234
Accounts receivable, net	34	31
Receivables from related party	143	264
Prepaid expenses and other current assets	57	40
Total current assets	482	569
RESTRICTED CASH	28	66
INVESTMENT IN CABLE PROPERTIES:
Property, plant and equipment, net	719	683
Customer relationships, net	0	0
Franchises	0	0
Goodwill	0	0
Total investment in cable properties, net	719	683
INVESTMENT IN SUBSIDIARIES	53,157	55,266
LOANS RECEIVABLE – RELATED PARTY	727	699
OTHER NONCURRENT ASSETS	372	378
Total assets	55,485	57,661
CURRENT LIABILITIES:
Accounts payable and accrued liabilities	656	725
Payables to related party	0	0
Current portion of long-term debt	0	0
Total current liabilities	656	725
LONG-TERM DEBT	0	0
LOANS PAYABLE – RELATED PARTY	0	0
DEFERRED INCOME TAXES	19	15
OTHER LONG-TERM LIABILITIES	545	554
SHAREHOLDERS’/MEMBER’S EQUITY
Controlling interest	47,193	49,024
Noncontrolling interests	7,072	7,343
Total shareholders’/member’s equity	54,265	56,367
Total liabilities and shareholders’/member’s equity	55,485	57,661
CCO Holdings
CURRENT ASSETS:
Cash and cash equivalents	200	500
Accounts receivable, net	0	0
Receivables from related party	41	59
Prepaid expenses and other current assets	0	0
Total current assets	241	559
RESTRICTED CASH	0	0
INVESTMENT IN CABLE PROPERTIES:
Property, plant and equipment, net	0	0
Customer relationships, net	0	0
Franchises	0	0
Goodwill	0	0
Total investment in cable properties, net	0	0
INVESTMENT IN SUBSIDIARIES	76,925	76,409
LOANS RECEIVABLE – RELATED PARTY	567	545
OTHER NONCURRENT ASSETS	0	0
Total assets	77,733	77,513
CURRENT LIABILITIES:
Accounts payable and accrued liabilities	314	296
Payables to related party	0	0
Current portion of long-term debt	2,198	0
Total current liabilities	2,512	296
LONG-TERM DEBT	22,064	21,951
LOANS PAYABLE – RELATED PARTY	0	0
DEFERRED INCOME TAXES	0	0
OTHER LONG-TERM LIABILITIES	0	0
SHAREHOLDERS’/MEMBER’S EQUITY
Controlling interest	53,157	55,266
Noncontrolling interests	0	0
Total shareholders’/member’s equity	53,157	55,266
Total liabilities and shareholders’/member’s equity	77,733	77,513
Charter Operating and Restricted Subsidiaries
CURRENT ASSETS:
Cash and cash equivalents	2,460	2,749
Accounts receivable, net	2,057	2,195
Receivables from related party	0	0
Prepaid expenses and other current assets	699	711
Total current assets	5,216	5,655
RESTRICTED CASH	0	0
INVESTMENT IN CABLE PROPERTIES:
Property, plant and equipment, net	33,377	33,908
Customer relationships, net	6,955	7,453
Franchises	67,322	67,322
Goodwill	29,554	29,554
Total investment in cable properties, net	137,208	138,237
INVESTMENT IN SUBSIDIARIES	0	0
LOANS RECEIVABLE – RELATED PARTY	0	0
OTHER NONCURRENT ASSETS	2,464	2,351
Total assets	144,888	146,243
CURRENT LIABILITIES:
Accounts payable and accrued liabilities	7,314	7,846
Payables to related party	202	357
Current portion of long-term debt	2,707	3,500
Total current liabilities	10,223	11,703
LONG-TERM DEBT	52,723	53,627
LOANS PAYABLE – RELATED PARTY	1,572	1,504
DEFERRED INCOME TAXES	55	55
OTHER LONG-TERM LIABILITIES	3,368	2,922
SHAREHOLDERS’/MEMBER’S EQUITY
Controlling interest	76,925	76,409
Noncontrolling interests	22	23
Total shareholders’/member’s equity	76,947	76,432
Total liabilities and shareholders’/member’s equity	$ 144,888	$ 146,243