Revenue Recognition - Customer Receivables and Contract Balances (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Jan. 01, 2025 |
Dec. 31, 2024 |
Jan. 01, 2024 |
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| Capitalized Contract Cost [Line Items] | ||||
| Customer receivables, less allowance of $20 and $23 | $ 170 | $ 205 | ||
| Contract liabilities | 231 | $ 244 | 244 | $ 269 |
| Allowance for credit losses | 20 | $ 23 | ||
| Held-for-sale | Lumen Mass Markets fiber-to-the-home business | ||||
| Capitalized Contract Cost [Line Items] | ||||
| Customer receivables, less allowance of $20 and $23 | 12 | |||
| Contract liabilities | $ 10 |
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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 Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right to consideration is unconditional. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of allowance for credit loss for right to consideration in exchange for good or service transferred to customer when right to consideration is unconditional. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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