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v3.24.2.u1

Background (Details) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended | 24 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) $ / shares | Jun. 30, 2023 USD ($) $ / shares | Jun. 30, 2024 USD ($) $ / shares | Jun. 30, 2023 USD ($) $ / shares | Dec. 31, 2023 USD ($) divestiture | Jan. 01, 2024 | Jan. 01, 2023 USD ($) | Oct. 03, 2022 state
Change in Accounting Estimate [Line Items] |  |  |  |  |  |  |  |
Number of business divestitures | divestiture |  |  |  |  | 3 |  |  |
Accumulated deficit | $ 17,899 |  | $ 17,899 |  | $ 17,907 |  |  |
Book overdraft balance | $ 5 |  | $ 5 |  | $ 0 |  |  |
Diluted (loss) earnings per common share (in dollars per share) | $ / shares | $ (0.05) | $ (8.88) | $ 0.01 | $ (8.37) |  |  |  |
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | ILEC Business |  |  |  |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |  |  |  |
Number of states in which the business is conducted | state |  |  |  |  |  |  |  | 20
Change in Accounting Method Accounted for as Change in Estimate |  |  |  |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |  |  |  |
Depreciation | $ (16) |  | $ (32) |  |  |  |  |
Depreciation, net of tax | $ (12) |  | $ (24) |  |  |  |  |
Diluted (loss) earnings per common share (in dollars per share) | $ / shares | $ 0.01 |  | $ 0.02 |  |  |  |  |
Fiber Network Assets |  |  |  |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |  |  |  |
Property, plant and equipment, useful life (in years) |  |  |  |  | 25 years | 30 years |  |
Correction of Error from Understatement of Revenues and Network Expenses Prior to 2021 |  |  |  |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |  |  |  |
Accumulated deficit |  | $ 63 |  | $ 63 |  |  | $ 63 |

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