Planned Divestiture of the Lumen Mass Markets Fiber-to-the-Home Business - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2025 USD ($) state	Sep. 30, 2025 USD ($) state	May 21, 2025 USD ($) state
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of states in which entity operates | state	14	14
Additional depreciation if disposal group did not meet the held for sale criteria | $	$ 25	$ 40
Lumen Mass Markets fiber-to-the-home business | Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration | $			$ 5,750
Number of states in which entity operates | state			11