Background - General (Details) - state	Mar. 31, 2026	Feb. 02, 2026
Accounting Policies [Abstract]
Number of states in which entity operates	14
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of states in which entity operates	14
Disposed of by Sale \| Lumen Mass Markets fiber-to-the-home business
Accounting Policies [Abstract]
Number of states in which entity operates		11
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of states in which entity operates		11