Long-Term Debt - New Issuances (Details) - Senior Notes - USD ($)	Apr. 17, 2023	Mar. 31, 2023	Jan. 13, 2021
Lumen Technologies, Inc.
Debt Instrument [Line Items]
Aggregate principal amount	$ 19,000,000	$ 1,535,000,000
3.750% Senior Notes Due 2029
Debt Instrument [Line Items]
Aggregate principal amount			$ 900,000,000
Stated interest rate			3.75%
10.500% Senior Notes Due 2030
Debt Instrument [Line Items]
Aggregate principal amount	$ 9,000,000	$ 915,000,000
Stated interest rate			10.50%