| Balance Sheets | 2025-09-30 | 2025-06-30 | 2025-03-31 | 2024-09-30 |
|---|---|---|---|---|
| Cash and cash equivalents | 3,310 | 10,259 | 12,003 | 9,754 |
| Accounts receivable, net of allowance for credit losses of 206 and 176 | 5,084 | 4,598 | 4,392 | 4,286 |
| Equipment installment plan receivables, net of allowance for credit losses and imputed discount of 646 and 656 | 4,599 | 4,226 | 4,294 | 3,595 |
| Inventory | 2,370 | 1,690 | 1,937 | 1,789 |
| Prepaid expenses | 1,128 | 1,125 | 980 | 953 |
| Other current assets | 5,212 | 4,874 | 3,835 | 2,154 |
| Total current assets | 21,703 | 26,772 | 27,441 | 22,531 |
| Property and equipment, net | 38,718 | 37,481 | 37,897 | 37,603 |
| Operating lease right-of-use assets | 26,070 | 24,735 | 25,025 | 25,833 |
| Financing lease right-of-use assets | 2,955 | 3,105 | 2,977 | 3,352 |
| Goodwill | 13,690 | 13,460 | 13,467 | 13,015 |
| Spectrum licenses | 97,749 | 95,928 | 98,733 | 98,736 |
| Other intangible assets, net | 4,117 | 2,438 | 2,618 | 2,762 |
| Equipment installment plan receivables due after one year, net of allowance for credit losses and imputed discount of 186 and 158 | 2,316 | 1,975 | 2,111 | 1,752 |
| Other assets | 9,862 | 6,749 | 4,364 | 5,158 |
| Total assets | 217,180 | 212,643 | 214,633 | 210,742 |
| Accounts payable and accrued liabilities | 9,193 | 7,802 | 7,900 | 7,496 |
| Short-term debt | 6,333 | 6,408 | 8,214 | 5,851 |
| Deferred revenue | 1,487 | 1,217 | 1,193 | 1,125 |
| Short-term operating lease liabilities | 3,550 | 3,343 | 3,305 | 3,328 |
| Short-term financing lease liabilities | 1,157 | 1,157 | 1,136 | 1,252 |
| Other current liabilities | 2,581 | 2,175 | 1,881 | 1,903 |
| Total current liabilities | 24,301 | 22,102 | 23,629 | 20,955 |
| Long-term debt-Nonrelated Party | 76,365 | 75,018 | 76,033 | 72,522 |
| Long-term debt-Related Party | 1,498 | 1,497 | 1,497 | 1,497 |
| Tower obligations | 3,568 | 3,603 | 3,634 | 3,695 |
| Deferred tax liabilities | 19,222 | 18,468 | 17,505 | 15,849 |
| Operating lease liabilities | 26,780 | 25,646 | 25,974 | 26,821 |
| Financing lease liabilities | 1,186 | 1,188 | 1,117 | 1,185 |
| Other long-term liabilities | 3,783 | 4,014 | 4,139 | 3,968 |
| Total long-term liabilities | 132,402 | 129,434 | 129,899 | 125,537 |
| Additional paid-in capital | 69,267 | 69,008 | 68,837 | 68,659 |
| Treasury stock, at cost, 156,929,196 and 126,494,683 shares | 28,064 | 25,569 | 23,085 | 15,921 |
| Accumulated other comprehensive loss | -881 | -908 | -989 | -889 |
| Retained earnings | 20,155 | 18,576 | 16,342 | 12,401 |
| Total stockholders' equity | 60,477 | 61,107 | 61,105 | 64,250 |
| Total liabilities and stockholders' equity | 217,180 | 212,643 | 214,633 | 210,742 |
T-Mobile US, Inc. (TMUSZ)
T-Mobile US, Inc. (TMUSZ)