Long-Term Debt and Credit Facilities - Narrative (Details) - Senior Notes - Qwest Corporation	Sep. 30, 2026	Jun. 11, 2026
6.500% Notes due 2056
Long-term Debt and Credit Facilities
Stated interest rate (as a percent)	6.50%	6.50%
6.750% Notes due 2057
Long-term Debt and Credit Facilities
Stated interest rate (as a percent)	6.75%	6.75%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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