Business Combinations - Schedule of Fair Value of Consideration Transferred (Details) - UScellular Wireless Assets Operations $ in Millions	Aug. 01, 2025 USD ($)
Business Combination [Line Items]
Fair value of cash paid on the UScellular Acquisition Date	$ 2,811
Fair value of T-Mobile replacement equity awards attributable to pre-combination service	44
Total fair value of consideration exchanged	$ 2,855

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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+ Details

T-Mobile US, Inc. 10-Q