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- Definition

Business Acquisition, Percentage of Purchase Price Paid in Cash

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- Definition

Business Acquisition, Percentage of Purchase Price Paid with Common Shares

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- Definition

Business Combination, Consideration Transferred, Including Settlements of Preexisting Relationships

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- Definition

Business Combination, Liability, Post-Acquisition Services

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Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liabilities

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Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Other

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Operating Lease, Liability

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Right-of-Use Asset

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- Definition

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Intangible Assets, Net

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Minimum Number of Towers Retained

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Number of Towers To Be Extended Tenancy Term

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- Definition

Payments for Asset Acquisitions

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the 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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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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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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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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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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Business Combinations - Narrative (Details) $ in Millions							3 Months Ended
Business Combinations - Narrative (Details) $ in Millions	Mar. 03, 2025 USD ($)	Feb. 18, 2025 USD ($)	Feb. 03, 2025 USD ($)	May 24, 2024 USD ($)	May 01, 2024 USD ($)	Mar. 09, 2023 USD ($)	Jun. 30, 2025 USD ($) tower_site	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 20, 2024
Business Acquisition [Line Items]
Goodwill								$ 13,467	$ 13,005
Ka Ena Corporation \| Merger And Unit Purchase Agreement
Business Acquisition [Line Items]
Business acquisition, outstanding (percent)						100.00%
Total consideration transferred						$ 1,350
Business acquisition, cash acquired (percent)						39.00%
Business acquisition, common shares acquired (percent)						61.00%
Ka Ena Corporation \| Merger and Unit Purchase Agreement, Amendment No. 1
Business Acquisition [Line Items]
Business combination contingent consideration liability, other long-term liabilities								210
Business combination, liability, post-acquisition services								106
Increase in other long-term liabilities								9
Decrease in deferred tax liabilities								$ 3
Provisionally assigned value of goodwill					$ 777
Goodwill expected to be tax deductible					$ 121
UScellular Wireless Assets Operations \| Purchase Agreement
Business Acquisition [Line Items]
Payments for asset acquisition				$ 4,400
Asset acquisition, maximum transferred liabilities incurred				$ 2,000
UScellular Wireless Assets Operations \| Purchase Agreement \| Forecast
Business Acquisition [Line Items]
Lease space agreement term (years)							15 years
Number of towers retained \| tower_site							2,100
Number of towers to be extended tenancy term \| tower_site							600
Estimated incremental future minimum lease payments							$ 1,400
Vistar Media Inc.
Business Acquisition [Line Items]
Business acquisition, outstanding (percent)										100.00%
Total consideration transferred			$ 619
Total consideration transferred, including settlements of preexisting relationships			621
Prepaid expense and other current assets			2
Property and equipment			1
Operating lease right-of-use assets			1
Goodwill			344
Other intangible assets			264
Deferred revenue			1
Operating lease liabilities			2
Total liabilities assumed			192
Vistar Media Inc. \| Customer Relationships
Business Acquisition [Line Items]
Finite-lived, fair value			201
Vistar Media Inc. \| Tradenames
Business Acquisition [Line Items]
Finite-lived, fair value			8
Vistar Media Inc. \| Other Intangible Assets
Business Acquisition [Line Items]
Finite-lived, fair value			$ 55
Vistar Media Inc. \| Merger and Unit Purchase Agreement, Amendment No. 1 \| Customer Relationships
Business Acquisition [Line Items]
Weighted average useful life			9 years
Vistar Media Inc. \| Merger and Unit Purchase Agreement, Amendment No. 1 \| Tradenames
Business Acquisition [Line Items]
Weighted average useful life			4 years
Vistar Media Inc. \| Merger and Unit Purchase Agreement, Amendment No. 1 \| Other Intangible Assets
Business Acquisition [Line Items]
Weighted average useful life			4 years
Blis Holdco Limited
Business Acquisition [Line Items]
Business acquisition, outstanding (percent)		100.00%
Total consideration transferred		$ 174
Provisionally assigned value of goodwill		112
Goodwill		276
Business acquisition, cash transferred	$ 180
Total liabilities assumed		$ 102