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Segment Information (Tables)

3 Months Ended

Mar. 31, 2025

Segment Reporting [Abstract]

Schedule of Segment Results

The following tables summarize our segment results for the three months ended March 31, 2025 and 2024, based on the segment categorization we were operating under at March 31, 2025.

									Three Months Ended March 31, 2025
															Business						Mass Markets
															(Dollars in millions)
Segment revenue															$	2,524					658
Segment expenses
Cost of services and products															738						14
Headcount costs															286						150
Non-headcount costs															334						113
Total segment expense															1,358						277
Total segment adjusted EBITDA															$	1,166					381

									Three Months Ended March 31, 2024
															Business						Mass Markets
															(Dollars in millions)
Segment revenue															$	2,591					699
Segment expenses
Cost of services and products															738						17
Headcount costs															344						167
Non-headcount costs															341						132
Total segment expense															1,423						316
Total segment adjusted EBITDA															$	1,168					383

Schedule of Reconciliation of Segment Adjusted EBITDA to Net (Loss) Income

The following table reconciles total segment adjusted EBITDA to net (loss) income for the three months ended March 31, 2025 and 2024:

									Three Months Ended March 31,
															2025						2024
															(Dollars in millions)
Total segment adjusted EBITDA															$	1,547					1,551
Depreciation and amortization															(713)						(748)
Other unallocated expense															(717)						(744)
Stock-based compensation expense															(10)						(14)
Operating income															107						45
Total other (expense) income, net															(352)						57
(Loss) income before taxes															(245)						102
Income tax (benefit) expense															(44)						45
Net (loss) income															$	(201)					57

X

- 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

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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
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