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v3.25.0.1

Long-Term Debt and Credit Facilities - Exchange Offers (Details) $ in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 24, 2024 USD ($) series | Nov. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($)
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount |  |  |  | $ 11,925
Repayments of debt |  |  | $ 2,258 |
Reduction of debt | $ 60 | $ 393 |  |
Debt instrument, fees |  |  |  | $ 17
Senior Notes |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | 848 | 393 |  |
10.000% Secured Notes Due 2032 | Senior Notes |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 438 |  |  |
Stated interest rate (as a percent) | 10.00% |  |  |
Senior Unsecured Notes Due 2026 To 2029 | Senior Notes |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 491 |  |  |
Repayments of debt | $ 14 |  |  |
Number of series | series | 4 |  |  |
10.000% Second Lien Notes Due 2032 | Senior Notes | Level 3 Financing, Inc. |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 350 |  |  |
Stated interest rate (as a percent) | 10.00% |  |  |
Senior Unsecured Notes Due 2027 | Senior Notes | Level 3 Financing, Inc. |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 357 |  |  |
Number of series | series | 2 |  |  |
5.125% Senior Notes due 2026 | Senior Notes |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 137 | $ 5 |  |
Stated interest rate (as a percent) | 5.125% | 5.125% |  |
4.000% Senior Secured Notes due 2027 (unsecured) | Senior Notes |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 188 | $ 4 |  |
Stated interest rate (as a percent) | 4.00% | 4.00% |  |
6.875% Debentures, Series G, due 2028 | Senior Notes |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 80 | $ 24 |  |
Stated interest rate (as a percent) | 6.875% | 6.875% |  | 6.875%
4.500% Senior Notes due 2029 | Senior Notes |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 86 |  |  |
Stated interest rate (as a percent) | 4.50% |  |  | 4.50%
3.400% Senior Secured Notes due 2027 (unsecured) | Senior Notes | Level 3 Financing, Inc. |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 77 | $ 1 |  |
Stated interest rate (as a percent) | 3.40% | 3.40% |  |
4.625% Senior Notes due 2027 | Senior Notes | Level 3 Financing, Inc. |  |  |  |
Long-term Debt and Credit Facilities |  |  |  |
Debt instrument, face amount | $ 280 | $ 48 |  |
Stated interest rate (as a percent) | 4.625% | 4.625% |  |

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