Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Revenue	$ 31,457	$ 29,887
Spinoff
Disaggregation of Revenue [Line Items]
Revenue	0	1,769
Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	32,998	29,390
Operating Segments \| Total Residential Connectivity & Platforms Segment
Disaggregation of Revenue [Line Items]
Revenue	17,323	17,665
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Domestic broadband
Disaggregation of Revenue [Line Items]
Revenue	6,338	6,679
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Domestic wireless service
Disaggregation of Revenue [Line Items]
Revenue	977	850
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Domestic wireless equipment
Disaggregation of Revenue [Line Items]
Revenue	418	273
Operating Segments \| Total Residential Connectivity & Platforms Segment \| International connectivity
Disaggregation of Revenue [Line Items]
Revenue	1,240	1,132
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Video
Disaggregation of Revenue [Line Items]
Revenue	6,256	6,600
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Advertising
Disaggregation of Revenue [Line Items]
Revenue	951	899
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Other
Disaggregation of Revenue [Line Items]
Revenue	1,143	1,233
Operating Segments \| Total Business Services Connectivity Segment
Disaggregation of Revenue [Line Items]
Revenue	2,640	2,496
Operating Segments \| Total Media Segment
Disaggregation of Revenue [Line Items]
Revenue	7,280	4,527
Operating Segments \| Total Media Segment \| Other
Disaggregation of Revenue [Line Items]
Revenue	253	244
Operating Segments \| Total Media Segment \| Domestic advertising
Disaggregation of Revenue [Line Items]
Revenue	3,453	1,468
Operating Segments \| Total Media Segment \| Domestic distribution
Disaggregation of Revenue [Line Items]
Revenue	2,283	1,667
Operating Segments \| Total Media Segment \| International networks
Disaggregation of Revenue [Line Items]
Revenue	1,291	1,148
Operating Segments \| Total Studios Segment
Disaggregation of Revenue [Line Items]
Revenue	3,426	2,826
Operating Segments \| Total Studios Segment \| Other
Disaggregation of Revenue [Line Items]
Revenue	336	366
Operating Segments \| Total Studios Segment \| Content licensing
Disaggregation of Revenue [Line Items]
Revenue	2,973	2,174
Operating Segments \| Total Studios Segment \| Theatrical
Disaggregation of Revenue [Line Items]
Revenue	117	286
Operating Segments \| Total Theme Parks Segment
Disaggregation of Revenue [Line Items]
Revenue	2,331	1,876
Headquarters/Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue	1,021	917
Eliminations
Disaggregation of Revenue [Line Items]
Revenue	$ (2,562)	$ (2,189)