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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2024
Segment Reporting [Abstract] |
Schedule of segment information | The following tables summarize our segment results for 2024, 2023 and 2022 based on the segment categorization we were operating under at December 31, 2024.
| Year Ended December 31, 2024
| Business |  | Mass Markets
| (Dollars in millions)
Segment revenue | $ | 10,363 |  |  | 2,745 |
Segment expense |  |  |
Cost of services and products | 3,063 |  |  | 69 |
Headcount costs | 1,237 |  |  | 651 |
Non-headcount costs | 652 |  |  | 572 |
Total expense | 4,952 |  |  | 1,292 |
Total segment adjusted EBITDA | $ | 5,411 |  |  | 1,453 |
| Year Ended December 31, 2023
| Business |  | Mass Markets
| (Dollars in millions)
Segment revenue | $ | 11,583 |  |  | 2,974 |
Segment expense |  |  |
Cost of services and products | 3,248 |  |  | 79 |
Headcount costs | 1,473 |  |  | 768 |
Non-headcount costs | 807 |  |  | 610 |
Total expense | 5,528 |  |  | 1,457 |
Total segment adjusted EBITDA | $ | 6,055 |  |  | 1,517 |
| Year Ended December 31, 2022
| Business |  | Mass Markets
| (Dollars in millions)
Segment revenue | $ | 13,099 |  |  | 4,379 |
Segment expense |  |  |
Cost of services and products | 3,436 |  |  | 121 |
Headcount costs | 1,584 |  |  | 945 |
Non-headcount costs | 879 |  |  | 703 |
Total expense | 5,899 |  |  | 1,769 |
Total segment adjusted EBITDA | $ | 7,200 |  |  | 2,610 |
Schedule of reconciliation from segment income to consolidated net income (loss) | The following table reconciles total segment adjusted EBITDA to net loss for the years ended December 31, 2024, 2023 and 2022:
| Years Ended December 31,
| 2024 |  | 2023 |  | 2022
| (Dollars in millions)
Total segment adjusted EBITDA | $ | 6,864 |  |  | 7,572 |  |  | 9,810 |
Depreciation and amortization | (2,956) |  |  | (2,985) |  |  | (3,239) |
Goodwill impairment | — |  |  | (10,693) |  |  | (3,271) |
Other unallocated expense | (3,419) |  |  | (3,426) |  |  | (3,107) |
Stock-based compensation | (29) |  |  | (52) |  |  | (98) |
Operating income (loss) | 460 |  |  | (9,584) |  |  | 95 |
Total other expense, net | (690) |  |  | (653) |  |  | (1,086) |
Loss before income taxes | (230) |  |  | (10,237) |  |  | (991) |
Income tax (benefit) expense | (175) |  |  | 61 |  |  | 557 |
Net loss | $ | (55) |  |  | (10,298) |  |  | (1,548) |

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- Definition Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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