Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Revenue	$ 29,940	$ 30,313	$ 61,396	$ 60,199
Spinoff
Disaggregation of Revenue [Line Items]
Revenue	0	1,770	0	3,539
Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	30,940	29,739	63,938	59,129
Operating Segments \| Total Residential Connectivity & Platforms Segment
Disaggregation of Revenue [Line Items]
Revenue	17,124	17,839	34,446	35,504
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Domestic broadband
Disaggregation of Revenue [Line Items]
Revenue	6,280	6,649	12,618	13,327
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Domestic wireless service
Disaggregation of Revenue [Line Items]
Revenue	1,007	882	1,984	1,732
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Domestic wireless equipment
Disaggregation of Revenue [Line Items]
Revenue	404	313	821	587
Operating Segments \| Total Residential Connectivity & Platforms Segment \| International connectivity
Disaggregation of Revenue [Line Items]
Revenue	1,246	1,219	2,486	2,351
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Video
Disaggregation of Revenue [Line Items]
Revenue	6,092	6,605	12,347	13,206
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Advertising
Disaggregation of Revenue [Line Items]
Revenue	962	951	1,913	1,850
Operating Segments \| Total Residential Connectivity & Platforms Segment \| Other
Disaggregation of Revenue [Line Items]
Revenue	1,133	1,219	2,277	2,452
Operating Segments \| Total Business Services Connectivity Segment
Disaggregation of Revenue [Line Items]
Revenue	2,671	2,575	5,311	5,071
Operating Segments \| Total Media Segment
Disaggregation of Revenue [Line Items]
Revenue	5,691	4,543	12,970	9,069
Operating Segments \| Total Media Segment \| Other
Disaggregation of Revenue [Line Items]
Revenue	204	261	457	505
Operating Segments \| Total Media Segment \| Domestic advertising
Disaggregation of Revenue [Line Items]
Revenue	2,163	1,395	5,616	2,863
Operating Segments \| Total Media Segment \| Domestic distribution
Disaggregation of Revenue [Line Items]
Revenue	1,993	1,632	4,276	3,299
Operating Segments \| Total Media Segment \| International networks
Disaggregation of Revenue [Line Items]
Revenue	1,330	1,254	2,621	2,403
Operating Segments \| Total Studios Segment
Disaggregation of Revenue [Line Items]
Revenue	3,040	2,432	6,466	5,259
Operating Segments \| Total Studios Segment \| Other
Disaggregation of Revenue [Line Items]
Revenue	269	343	605	709
Operating Segments \| Total Studios Segment \| Content licensing
Disaggregation of Revenue [Line Items]
Revenue	1,799	1,805	4,772	3,979
Operating Segments \| Total Studios Segment \| Theatrical
Disaggregation of Revenue [Line Items]
Revenue	972	284	1,088	570
Operating Segments \| Total Theme Parks Segment
Disaggregation of Revenue [Line Items]
Revenue	2,413	2,349	4,744	4,226
Headquarters/Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue	771	885	1,792	1,802
Eliminations
Disaggregation of Revenue [Line Items]
Revenue	$ (1,771)	$ (2,081)	$ (4,333)	$ (4,270)