Wireless Licenses, Goodwill and Other Intangible Assets - Additional Information (Detail) - Wireless Licenses - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Indefinite-lived Intangible Assets [Line Items]
Wireless licenses under development	$ 38,900	$ 53,200
Interest costs capitalized	$ 449	$ 452
Average remaining renewal period of wireless license portfolio (in years)	15 years

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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-Topic 360
-SubTopic 10
-Section 50
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of interest capitalized during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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Average remaining renewal period of wireless license portfolio.

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