Long-Term Debt - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Apr. 17, 2023	Dec. 31, 2022
Long-term debt
Debt instrument, face amount		$ 19,000,000
Redemption price, percentage	101.00%
Senior notes | Lumen Technologies, Inc.
Long-term debt
Debt instrument, face amount	$ 1,535,000,000
10.500% Senior Secured Notes Due 2030 | Senior notes
Long-term debt
Debt instrument, face amount	$ 915,000,000	$ 9,000,000
Stated interest rate	10.50%	10.50%
Supplier Finance Programs
Long-term debt
Stated interest rate	1.25%
Period to make quarterly installment payments	5 years
Outstanding obligations under the plan	$ 59,000,000		$ 67,000,000
Obligation included in current maturities	$ 15,000,000		$ 12,000,000