Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 109,658	$ 106,383
Less: Accumulated depreciation	55,611	54,388
Property and equipment, net	54,047	51,995
United States
Property, Plant and Equipment [Line Items]
Property and equipment, net	41,187	40,580
Other
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 12,860	11,415
Distribution systems
Property, Plant and Equipment [Line Items]
Weighted-Average Original Useful Life	11 years
Property and equipment, at cost	$ 41,814	40,861
Customer premise equipment
Property, Plant and Equipment [Line Items]
Weighted-Average Original Useful Life	6 years
Property and equipment, at cost	$ 25,772	26,323
Buildings, theme park infrastructure and leasehold improvements
Property, Plant and Equipment [Line Items]
Weighted-Average Original Useful Life	31 years
Property and equipment, at cost	$ 20,258	15,885
Other equipment
Property, Plant and Equipment [Line Items]
Weighted-Average Original Useful Life	11 years
Property and equipment, at cost	$ 16,960	14,371
Construction in process
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	3,131	7,095
Land
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 1,722	$ 1,848