Investment in Charter Accounted for Using the Equity Method -Charter condensed consolidated balance sheets (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Investments in affiliates accounted for using the Equity Method
Current assets	$ 85	$ 423
Other assets	57	135
Total assets	13,193	16,687
Current liabilities	350	200
Deferred income taxes	2,083	2,028
Long-term debt	1,792	2,687
Equity	8,870	9,793
Total liabilities and equity	13,193	16,687
Charter
Investments in affiliates accounted for using the Equity Method
Current assets	4,867	4,233
Property and equipment, net	45,187	42,913
Goodwill	29,710	29,674
Intangible assets, net	68,023	68,437
Other assets	5,063	4,763
Total assets	152,850	150,020
Current liabilities	12,994	13,486
Deferred income taxes	19,604	18,845
Long-term debt	94,413	92,134
Other liabilities	6,251	5,848
Equity	19,588	19,707
Total liabilities and equity	$ 152,850	$ 150,020