Tower Obligations - Schedule of Impacts to Consolidated Balance Sheets (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Property and equipment, net | ||
| Sale Leaseback Transaction [Line Items] | ||
| Sale-leasebacks | $ 1,851 | $ 1,922 |
| Tower obligations | ||
| Sale Leaseback Transaction [Line Items] | ||
| Sale-leasebacks | 3,461 | 3,532 |
| Other long-term liabilities | ||
| Sale Leaseback Transaction [Line Items] | ||
| Sale-leasebacks | $ 554 | $ 554 |