Business Combinations - Schedule of Fair Value of Consideration Transferred (Details) - USD ($) $ in Millions |
Aug. 01, 2025 |
May 01, 2024 |
|---|---|---|
| Ka Ena Corporation | Merger and Unit Purchase Agreement, Amendment No. 1 | ||
| Business Combination [Line Items] | ||
| Fair value of T-Mobile replacement equity awards attributable to pre-combination service | $ 527 | |
| Fair value of cash paid on the UScellular Acquisition Date | 396 | |
| Fair value of deferred earnout consideration | 191 | |
| Fair value of deferred other consideration | 27 | |
| Total fair value of consideration exchanged | $ 1,141 | |
| UScellular Wireless Assets Operations | ||
| Business Combination [Line Items] | ||
| Fair value of T-Mobile replacement equity awards attributable to pre-combination service | $ 44 | |
| Fair value of cash paid on the UScellular Acquisition Date | 2,811 | |
| Total fair value of consideration exchanged | $ 2,855 |
| X | ||||||||||
- Definition Business Combination, Contingent Consideration Transferred, Deferred No definition available.
|
| X | ||||||||||
- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of tangible and intangible assets other than cash transferred by acquirer as part of consideration transferred in business combination. Includes, but is not limited to, business or subsidiary, or both, of acquirer transferred to former owner of acquiree. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|