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Employee Benefits (Tables) | 12 Months Ended
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Dec. 31, 2024
Retirement Benefits [Abstract] |
Schedule of cost allocation of service costs | The combined net pension and post-retirement service costs is included in cost of services and products and selling, general and administrative expenses on our consolidated statement of operations, in the amounts for the respective periods presented in the table below:
| Years Ended December 31,
| 2024 |  | 2023 |  | 2022
| (Dollars in millions)
Allocated pension service costs | $ | 20 |  |  | 22 |  |  | 31 |
Allocated post-retirement service costs | 4 |  |  | 4 |  |  | 7 |
% of Lumen's total pension and post-retirement service costs | 86 | % |  | 87 | % |  | 72 | %

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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