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Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2023
Feb. 20, 2024
Jun. 30, 2023
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-7784    
Entity Registrant Name Lumen Technologies, Inc.    
Entity Incorporation, State or Country Code LA    
Entity Tax Identification Number 72-0651161    
Entity Address, Address Line One 100 CenturyLink Drive,    
Entity Address, City or Town Monroe,    
Entity Address, State or Province LA    
Entity Address, Postal Zip Code 71203    
City Area Code 318    
Local Phone Number 388-9000    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction true    
Document Financial Statement Restatement Recovery Analysis false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   1,009,755,821  
Entity Public Float     $ 2.3
Documents Incorporated by Reference
Portions of the Registrant's Proxy Statement to be furnished in connection with the 2024 annual meeting of shareholders are incorporated by reference in Part III of this report.
    
Entity Central Index Key 0000018926    
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, par value $1.00 per share    
Trading Symbol LUMN    
Security Exchange Name NYSE    
Preferred Stock      
Document Information [Line Items]      
Title of 12(b) Security Preferred Stock Purchase Rights    
No Trading Symbol Flag true    
Security Exchange Name NYSE