Long-Term Debt and Credit Facilities - Third Credit Agreement Refinancing (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
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| Long-term Debt and Credit Facilities | |||||
| Net loss on early retirement of debt | $ (1) | $ 395 | $ 219 | $ 666 | |
| Level 3 Financing, Inc. | Term Loan | Term Loan B-5 | |||||
| Long-term Debt and Credit Facilities | |||||
| Outstanding debt | $ 2,400 | 2,400 | $ 2,400 | ||
| Level 3 Financing, Inc. | Term Loan | Term Loan B-3 | |||||
| Long-term Debt and Credit Facilities | |||||
| Net loss on early retirement of debt | $ 4 | ||||
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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