Cover Page
| Cover Page | Mar. 28, 2022 |
| Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0000018926 |
| Document Type | 8-K |
| Document Period End Date | Mar. 28, 2022 |
| Entity Registrant Name | Lumen Technologies, Inc. |
| Entity Incorporation State Country Code | LA |
| Entity File Number | 001-7784 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Entity Information [Line Items] | |
| Security 12b Title | Common Stock, par value $1.00 per share |
| Trading Symbol | LUMN |
| Security Exchange Name | NYSE |
| Preferred Stock [Member] | |
| Entity Information [Line Items] | |
| Security 12b Title | Preferred Stock Purchase Rights |
| Security Exchange Name | NYSE |
| No Trading Symbol Flag | true |
| Qwest Corporation [Member] | |
| Entity Information [Line Items] | |
| Entity Central Index Key | 0000068622 |
| Entity Registrant Name | Qwest Corporation |
| Entity Incorporation State Country Code | CO |
| Entity File Number | 001-03040 |
| Entity Tax Identification Number | 84-0273800 |
| 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 |
| Level 3 Parent LLC [Member] | |
| Entity Information [Line Items] | |
| Entity Central Index Key | 0000794323 |
| Entity Registrant Name | Level 3 Parent, LLC |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-35134 |
| Entity Tax Identification Number | 47-0210602 |
| Entity Address, Address Line One | 1025 Eldorado Blvd. |
| Entity Address, City or Town | Broomfield |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80021-8869 |
| City Area Code | 720 |
| Local Phone Number | 888-1000 |
| 6.5% Notes Due 2056 [Member] | |
| Entity Information [Line Items] | |
| Security 12b Title | 6.5% Notes Due 2056 |
| Trading Symbol | CTBB |
| Security Exchange Name | NYSE |
| 6.75% Notes Due 2057 [Member] | |
| Entity Information [Line Items] | |
| Security 12b Title | 6.75% Notes Due 2057 |
| Trading Symbol | CTDD |
| Security Exchange Name | NYSE |