Business Combinations - Schedule of Fair Value of Consideration Transferred (Details) - Ka Ena Corporation - Merger and Unit Purchase Agreement, Amendment No. 1 $ in Thousands	May 01, 2024 USD ($)
Business Acquisition [Line Items]
Fair value of T-Mobile common stock issued to Ka’ena stockholders on the Acquisition Date	$ 527,000
Fair value of cash paid to Ka’ena stockholders on the Acquisition Date	413,000
Fair value of contingent consideration	183,000
Fair value of deferred consideration	27,000
Total consideration transferred	$ 1,150,000

Business Combination, Contingent Consideration Transferred, Deferred

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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 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 equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

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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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