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Business Combination, Additional Earnout Payment To Be Paid, Maximum

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Loss Contingency, Damages Awarded, Incremental Value

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Number of Customer Accounts Impacted

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Payments for Asset Acquisitions

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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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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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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Amount of unrecorded obligation to transfer funds in future for fixed or minimum amount or quantity of product and service at fixed or minimum price. Includes, but is not limited to, lease not yet commenced and take-or-pay and throughput contracts.

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Commitments and Contingencies - Narrative (Details) $ in Millions					3 Months Ended		6 Months Ended	24 Months Ended
	Jul. 18, 2024 USD ($)	May 24, 2024 USD ($)	May 01, 2024 USD ($)	Jan. 05, 2023 customer_account	Jun. 30, 2025 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2028 USD ($)	Dec. 31, 2023 USD ($)	Jul. 01, 2025 USD ($)
Loss Contingencies [Line Items]
Legal settlement paid							$ 350
Aggregate incremental expense									$ 150
Number of customer accounts impacted \| customer_account				37,000,000
Selling, General and Administrative Expenses
Loss Contingencies [Line Items]
Aggregate incremental expense						$ 400
Ka Ena Corporation \| Merger and Unit Purchase Agreement, Amendment No. 1
Loss Contingencies [Line Items]
Additional upfront payment to be paid			$ 420
UScellular Wireless Assets Operations \| Purchase Agreement
Loss Contingencies [Line Items]
Payments for asset acquisition		$ 4,400
Asset acquisition, maximum transferred liabilities incurred		$ 2,000
Lessee leasing arrangements, operating leases, term of contract (years)					15 years		15 years
Estimated incremental future minimum lease payments					$ 1,400		$ 1,400
UScellular Wireless Assets Operations \| Purchase Agreement \| Subsequent Event
Loss Contingencies [Line Items]
Lessee leasing arrangements, operating leases, term of contract (years)										15 years
Estimated incremental future minimum lease payments										$ 1,400
Lumos
Loss Contingencies [Line Items]
Expected investment to acquire interest in joint venture					$ 932
Ownership interest in joint venture (percent)					50.00%		50.00%
Lumos \| Forecast
Loss Contingencies [Line Items]
Expected investment to acquire interest in joint venture								$ 500
Metronet
Loss Contingencies [Line Items]
Expected investment to acquire interest in joint venture	$ 4,600
Ownership interest in joint venture (percent)	50.00%