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Discontinued Operations - Balance Sheet (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Current assets of discontinued operations | $ 0 | $ 1,163,032
Total non-current assets of discontinued operations | 0 | 4,499,561
Total current liabilities of discontinued operations | 20,242 | 671,575
Non-current liabilities of discontinued operations | $ 0 | 2,310,660
Wireless operations and select spectrum assets | Discontinued Operations |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Accounts receivable, net |  | 942,177
Inventory, net |  | 178,700
Prepaid expenses |  | 39,147
Other current assets |  | 3,008
Current assets of discontinued operations |  | 1,163,032
Licenses |  | 1,298,212
Property, plant and equipment, net |  | 2,117,517
Operating lease right-of-use assets |  | 461,213
Other assets and deferred charges |  | 622,619
Total non-current assets of discontinued operations |  | 4,499,561
Total assets of discontinued operations |  | 5,662,593
Current portion of long-term debt |  | 224
Accounts payable |  | 204,861
Customer deposits and deferred revenues |  | 236,053
Accrued taxes |  | 2,836
Accrued compensation |  | 3,032
Short-term operating lease liabilities |  | 125,137
Other current liabilities |  | 99,432
Total current liabilities of discontinued operations |  | 671,575
Long-term operating lease liabilities |  | 326,406
Other deferred liabilities and credits |  | 348,545
Long-term debt, net |  | 1,635,709
Non-current liabilities of discontinued operations |  | 2,310,660
Total liabilities of discontinued operations |  | $ 2,982,235

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