| Schedule of allocation of excess basis within memo accounts used for equity accounting purposes |  
		
			The excess basis in our investment in Charter has increased to $3,213 million as of September 30, 2018 allocated within memo accounts used for equity accounting purposes as follows (amounts in millions): 
		 
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						  | 
						  | 
						September 30,  | 
						  | 
						December 31,  |  
				| 
						  | 
						  | 
						  | 
						2018 | 
						  | 
						2017 |  
				| 
						Property and equipment | 
						     | 
						$ | 
						 336 | 
						  | 
						 361 |  
				| 
						Customer relationships | 
						  | 
						  | 
						 713 | 
						  | 
						 689 |  
				| 
						Franchise fees | 
						  | 
						  | 
						 1,782 | 
						  | 
						 1,670 |  
				| 
						Trademarks | 
						  | 
						  | 
						 29 | 
						  | 
						 29 |  
				| 
						Goodwill | 
						  | 
						  | 
						 1,145 | 
						  | 
						 986 |  
				| 
						Debt | 
						  | 
						  | 
						 (103) | 
						  | 
						 (98) |  
				| 
						Deferred income tax liability | 
						  | 
						  | 
						 (689) | 
						  | 
						 (662) |  
				| 
						  | 
						  | 
						$ | 
						 3,213 | 
						  | 
						 2,975 | 
			 
		 | 
| Summary of financial information for Charter |  
		
			Summarized unaudited financial information for Charter is as follows (amounts in millions):
		 
			Charter condensed consolidated balance sheets
		 
			 
		 
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						     | 
						September 30, 2018 | 
						  | 
						December 31, 2017 | 
						  |  
				| 
						Current assets | 
						  | 
						$ | 
						 2,777 | 
						  | 
						 2,555 | 
						  |  
				| 
						Property and equipment, net | 
						  | 
						  | 
						 34,740 | 
						  | 
						 33,888 | 
						  |  
				| 
						Goodwill | 
						  | 
						  | 
						 29,554 | 
						  | 
						 29,554 | 
						  |  
				| 
						Intangible assets, net | 
						  | 
						  | 
						 77,455 | 
						  | 
						 79,270 | 
						  |  
				| 
						Other assets | 
						  | 
						  | 
						 1,559 | 
						  | 
						 1,356 | 
						  |  
				| 
						Total assets | 
						  | 
						$ | 
						 146,085 | 
						  | 
						 146,623 | 
						  |  
				| 
						Current liabilities | 
						  | 
						  | 
						 11,850 | 
						  | 
						 11,090 | 
						  |  
				| 
						Deferred income taxes | 
						  | 
						  | 
						 17,421 | 
						  | 
						 17,314 | 
						  |  
				| 
						Long-term debt | 
						  | 
						  | 
						 69,135 | 
						  | 
						 68,186 | 
						  |  
				| 
						Other liabilities | 
						  | 
						  | 
						 2,451 | 
						  | 
						 2,502 | 
						  |  
				| 
						Equity | 
						  | 
						  | 
						 45,228 | 
						  | 
						 47,531 | 
						  |  
				| 
						Total liabilities and shareholders’ equity | 
						  | 
						$ | 
						 146,085 | 
						  | 
						 146,623 | 
						  | 
			Charter condensed consolidated statements of operations
		 
			 
		 
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						Three months ended   | 
						     | 
						Nine months ended  |  
				| 
						  | 
						September 30,  | 
						  | 
						September 30,  |  
				| 
						  | 
						2018 | 
						  | 
						2017 | 
						  | 
						2018 | 
						  | 
						2017 |  
				| 
						Revenue | 
						$ | 
						 10,892 | 
						  | 
						 10,458 | 
						  | 
						 32,403 | 
						  | 
						 30,979 |  
				| 
						Cost and expenses: | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Operating costs and expenses (excluding depreciation and amortization) | 
						  | 
						 (7,012) | 
						  | 
						 (6,703) | 
						  | 
						 (20,721) | 
						  | 
						 (19,857) |  
				| 
						Depreciation and amortization | 
						  | 
						 (2,482) | 
						  | 
						 (2,701) | 
						  | 
						 (7,784) | 
						  | 
						 (7,846) |  
				| 
						Other operating expenses, net | 
						  | 
						 (18) | 
						  | 
						 (145) | 
						  | 
						 (116) | 
						  | 
						 (374) |  
				| 
						  | 
						  | 
						 (9,512) | 
						  | 
						 (9,549) | 
						  | 
						 (28,621) | 
						  | 
						 (28,077) |  
				| 
						Operating income | 
						  | 
						 1,380 | 
						  | 
						 909 | 
						  | 
						 3,782 | 
						  | 
						 2,902 |  
				| 
						Interest expense, net | 
						  | 
						 (901) | 
						  | 
						 (788) | 
						  | 
						 (2,630) | 
						  | 
						 (2,250) |  
				| 
						Other income (expense), net | 
						  | 
						 214 | 
						  | 
						 (3) | 
						  | 
						 172 | 
						  | 
						 (55) |  
				| 
						Income tax benefit (expense) | 
						  | 
						 (109) | 
						  | 
						 (26) | 
						  | 
						 (178) | 
						  | 
						 (99) |  
				| 
						Net income (loss) | 
						  | 
						 584 | 
						  | 
						 92 | 
						  | 
						 1,146 | 
						  | 
						 498 |  
				| 
						Less: Net income attributable to noncontrolling interests | 
						  | 
						 (91) | 
						  | 
						 (44) | 
						  | 
						 (212) | 
						  | 
						 (156) |  
				| 
						Net income (loss) attributable to Charter shareholders  | 
						$ | 
						 493 | 
						  | 
						 48 | 
						  | 
						 934 | 
						  | 
						 342 | 
			 
		 |