Property and Equipment (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Gross property and equipment		$ 28,478	$ 27,206
Less: accumulated depreciation		(13,071)	(11,937)
Total property and equipment, net		15,407	15,269
Depreciation expense		1,200
AT&T purchase option 2032 through 2048
Property, Plant and Equipment [Line Items]
Contractual Obligation		4,200
T-Mobile Purchase obligation 2037
Property, Plant and Equipment [Line Items]
Contractual Obligation		2,300
T-Mobile purchase option 2035 through 2049
Property, Plant and Equipment [Line Items]
Contractual Obligation		2,000
AT&T purchase option prior to 2032
Property, Plant and Equipment [Line Items]
Contractual Obligation		405
Land owned in fee and perpetual easements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	[1]	2,339	2,259
Buildings [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment		$ 221	218
Property, Plant and Equipment, Useful Life		40 years
Communication Infrastructure [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment		$ 24,353	23,289
Property, Plant and Equipment, Useful Life		20 years
Information technology assets and other [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment		$ 652	587
Construction in Process [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment		$ 913	$ 853
Minimum [Member] | Communication Infrastructure [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		1 year
Minimum [Member] | Information technology assets and other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		2 years
Maximum [Member] | Communication Infrastructure [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		20 years
Maximum [Member] | Information technology assets and other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		7 years

[1] Includes land owned through fee interests and perpetual easements.