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Long-Term Debt and Credit Facilities (Tables)
 12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of long-term debt including unamortized discounts and premiums
The following table reflects the consolidated long-term debt of Lumen Technologies, Inc. and its subsidiaries as of the dates indicated below, including unamortized premiums (discounts) and unamortized debt issuance costs:
   As of December 31,
 
Interest Rates(1)
Maturities(1)
20242023
   (Dollars in millions)
Senior Secured Debt: (2)
Lumen Technologies, Inc.    
Series A Revolving Credit Facility
SOFR + 4.00%
2028$— — 
Series B Revolving Credit Facility
SOFR + 6.00%
2028— — 
Term Loan A(3)
SOFR + 6.00%
2028357 — 
Term Loan B-1(4)
SOFR + 2.35%
20291,606 — 
Term Loan B-2(4)
SOFR + 2.35%
20301,606 — 
Term Loan B(5)
SOFR + 2.25%
202756 3,891 
Other Facilities(6)
N/A
N/A
— 1,399 
Superpriority Notes
4.125% - 10.000%
2029 - 2032
1,247 — 
Former Parent Secured Notes(7)
N/A
N/A
— 1,250 
Subsidiaries:
Level 3 Financing, Inc.
Term Loan B-1(8)
SOFR + 6.56%
20291,199 — 
Term Loan B-2(8)
SOFR + 6.56%
20301,199 — 
Former Level 3 Facility(9)
SOFR + 1.75%
202712 2,411 
First Lien Notes(10)
10.500% - 11.000%
2029 - 2030
3,846 925 
Second Lien Notes
3.875% - 10.000%
2029 - 2032
2,579 — 
Former Level 3 Senior Notes(11)
N/A
N/A
— 1,500 
Unsecured Senior Notes and Other Debt:
Lumen Technologies, Inc.
Senior notes(12)
4.000% - 7.650%
2025 - 2042
1,428 2,143 
Subsidiaries:   
Level 3 Financing, Inc.
Senior notes(13)
3.400% - 4.625%
2027 - 2029
964 3,940 
Qwest Corporation
Senior notes
6.500% - 7.750%
2025 - 2057
1,973 1,986 
Former Term Loan(14)
N/A
N/A
— 215 
Qwest Capital Funding, Inc.
Senior notes
6.875% - 7.750%
2028 - 2031
192 192 
Finance lease and other obligations
VariousVarious254 285 
Unamortized discounts, net  (395)(4)
Unamortized debt issuance costs(217)(145)
Total long-term debt  17,906 19,988 
Less current maturities  (412)(157)
Long-term debt, excluding current maturities  $17,494 19,831 
_______________________________________________________________________________
N/A - Not applicable
(1)As of December 31, 2024. All references to "SOFR" refer to the Secured Overnight Financing Rate.
(2)As discussed further below in this Note, the debt listed under the caption “Senior Secured Debt” is either secured by assets of the issuer, guaranteed on a secured or unsecured basis by certain affiliates of the issuer, or both. As discussed further in footnotes 12 and 13 below, we reclassified in the table above certain notes that were guaranteed, secured, or both prior to the TSA Effective Date (as defined below) from “secured” to “unsecured” in light of amendments that released such security interests.
(3)Term Loan A had an interest rate of 10.573% as of December 31, 2024.
(4)Term Loan B-1 and B-2 each had an interest rate of 7.037% as of December 31, 2024.
(5)Term Loan B had an interest rate of 6.937% and 7.720% as of December 31, 2024 and December 31, 2023, respectively.
(6)Reflects revolving credit facility and term loan A and A-1 debt issued under the Former Parent Facilities (as defined below), which were due in 2025 and had interest rates of 7.464% and 7.470%, respectively, as of December 31, 2023.
(7)Former Parent Secured Notes were due in 2027 and had an interest rate of 4.000% as of December 31, 2023, prior to being cancelled on the TSA Effective Date (as defined below).
(8)The Level 3 Term Loan B-1 and B-2 each had an interest rate of 11.133% as of December 31, 2024.
(9)Reflects Level 3 Tranche B 2027 Term Loan issued under the Former Level 3 Facility (as defined below), which had an interest rate of 6.437% and 7.220% as of December 31, 2024 and December 31, 2023, respectively.
(10)Includes Level 3's 10.500% Senior Secured Notes due 2030 issued in early 2023, the terms of which have been amended to be consistent with Level 3's first lien notes issued on March 22, 2024.
(11)Former Level 3 Senior Notes were due in 2027 - 2029 and had an interest rates of 3.400% - 3.875% as of December 31, 2023, prior to being cancelled on the TSA Effective Date (as defined below).
(12)The total amount of these notes at December 31, 2024 includes the remaining aggregate principal amount due under the Former Parent Secured Notes, the terms of which were amended on March 22, 2024 to release the guarantees of such debt that could be released in accordance with their indentures and the security interests relating thereto.
(13)The total amount for these notes at December 31, 2024 includes the remaining aggregate principal amount due under the Former Level 3 Secured Notes, the terms of which were amended on March 22, 2024 to release the security interests relating thereto.
(14)The Qwest Corporation Term Loan was due in 2027 and had an interest rate of 7.970% as of December 31, 2023, prior to being cancelled on the TSA Effective Date (as defined below).
Schedule of maturities of long-term debt
Set forth below is the aggregate principal amount of our long-term debt as of December 31, 2024 (excluding unamortized discounts, net, and unamortized debt issuance costs) maturing during the following years.

 (Dollars in millions)
2025$412 
202696 
2027250 
2028738 
20297,203 
2030 and thereafter9,819 
Total long-term debt$18,518 
Schedule of debt retirements
The following table sets forth the aggregate principal amount of each series of senior notes of Lumen and Level 3 Financing retired in exchange for cash in November 2024 in connection with the Cash Tender Offers:

Debt
Aggregate Principal Amount (in millions)
Lumen Technologies, Inc.
5.625% Senior Notes, Series X, due 2025
$33 
7.200% Senior Notes, Series D, due 2025
3 
5.125% Senior Notes due 2026
5 
4.000% Senior Secured Notes due 2027 (unsecured)
4 
6.875% Debentures, Series G, due 2028
24 
Level 3 Financing, Inc.
3.400% Senior Secured Notes due 2027 (unsecured)
1 
4.625% Senior Notes due 2027
48 
4.250% Senior Notes due 2028
275 
Total
$393 
The following table sets forth the aggregate principal amount of each series of senior unsecured notes of Lumen and Level 3 Financing exchanged and retired on September 24, 2024 in connection with the Exchange Offers:

Debt
Aggregate Principal Amount (in millions)
Lumen Technologies, Inc.
5.125% Senior Notes due 2026
$137 
4.000% Senior Secured Notes due 2027 (unsecured)
188 
6.875% Debentures, Series G, due 2028
80 
4.500% Senior Notes due 2029
86 
Level 3 Financing, Inc.
3.400% Senior Secured Notes due 2027 (unsecured)
77 
4.625% Senior Notes due 2027
280 
Total
$848 
Schedule of debt repayments
The following table sets forth the aggregate principal amount of each of Lumen's consolidated debt arrangements that were partially or fully paid in exchange for cash or newly-issued debt during the first quarter of 2024 in connection with the TSA Transactions:

Aggregate Principal Amount
(in millions)
Debt
Repaid
Exchanged
Lumen Technologies, Inc.
Term Loan A
$933 — 
Term Loan A-1
266 — 
Term Loan B
575 3,259 
5.125% Senior Notes due 2026
116 147 
4.000% Senior Notes due 2027
153 865 
Level 3 Financing, Inc.
Term Loan B
— 2,398 
3.400% Senior Notes due 2027
— 668 
3.875% Senior Notes due 2029
— 678 
4.625% Senior Notes due 2027
— 606 
4.250% Senior Notes due 2028
— 712 
3.625% Senior Notes due 2029
— 458 
3.750% Senior Notes due 2029
— 453 
Qwest Corporation
Term Loan B
215 — 
Total$2,258 10,244 
The following table sets forth the aggregate principal amount of each series of Lumen’s senior unsecured notes retired during the year ended December 31, 2023, in connection with the above-described exchange transactions:

Debt
Aggregate principal (amounts in millions)
5.625% Senior Notes, Series X, due 2025
$49 
7.200% Senior Notes, Series D, due 2025
21 
5.125% Senior Notes due 2026
291 
6.875% Debentures, Series G, due 2028
52 
5.375% Senior Notes due 2029
275 
4.500% Senior Notes due 2029
558 
7.600% Senior Notes, Series P, due 2039
164 
7.650% Senior Notes, Series U, due 2042
144 
Total$1,554 
Schedule of debt issuances
The following table sets forth the aggregate principal balance as of December 31, 2024 of the debt issued by Lumen or Level 3 Financing in connection with the TSA Transactions:

New Debt Issuances(1)
Aggregate Principal Amount as of December 31, 2024 (in millions)
Lumen Technologies, Inc.
Term Loan A(2)
$357 
Term Loan B-1(2)
1,606 
Term Loan B-2(2)
1,606 
4.125% Superpriority Notes due 2029-2030
808 
Level 3 Financing, Inc.
Term Loan B-1
1,199 
Term Loan B-2
1,199 
10.500% First Lien Notes due 2029
668 
11.000% First Lien Notes due 2029
1,575 
4.875% Second Lien Notes due 2029
606 
10.750% First Lien Notes due 2030
678 
4.500% Second Lien Notes due 2030
712 
3.875% Second Lien Notes due 2030
458 
4.000% Second Lien Notes due 2031
453 
Total
$11,925 
______________________________________________________________________ 
(1)Except for Lumen's Term Loan A and $1.375 billion of Level 3 Financing's 11.000% First Lien Notes due 2029, all of the new debt listed in this table was issued in the first quarter of 2024 in exchange for previously-issued debt of Lumen or Level 3 Financing in connection with the TSA Transactions.
(2)Reflects approximately $66 million of term loan installment payments and paydowns made between the TSA Effective Date and December 31, 2024.
Schedule of debt repurchases The following table sets forth the aggregate principal amount of each series of notes and term loans repurchased during the year ended December 31, 2024:
Debt
 Principal Amount Repurchased
(in millions)
Lumen Technologies, Inc.
Term Loan A
$2 
Term Loan B-1
7 
Term Loan B-2
7 
5.625% Senior Notes, Series X, due 2025
70 
7.200% Senior Notes, Series D, due 2025
13 
6.875% Senior Notes, Series G, due 2028
7 
4.500% Senior Notes due 2029
24 
4.125% Superpriority Notes due 2029-2030
3 
7.600% Senior Notes due 2039
5 
7.650% Senior Notes due 2042
6 
Level 3 Financing, Inc.
4.250% Senior Notes due 2028
34 
3.625% Senior Notes due 2029
81 
3.750% Sustainability-Linked Senior Notes due 2029
86 
3.875% Senior Secured Notes due 2029 (unsecured)
18 
Qwest Corporation
7.250% Senior Notes due 2025
13 
Total$376 
Schedule of amount of gross interest expense, net of capitalized interest
Interest expense includes interest on total long-term debt. The following table presents the amount of gross interest expense, net of capitalized interest:

 Years Ended December 31,
 202420232022
 (Dollars in millions)
Interest expense:   
Gross interest expense$1,548 1,269 1,398 
Capitalized interest(176)(111)(66)
Total interest expense$1,372 1,158 1,332