Segment Information (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Schedule of Segment Results

The following tables summarize our segment results for the three months ended March 31, 2024 and 2023, based on the segment categorization we were operating under at March 31, 2024.

	Three Months Ended March 31, 2024
	Business		Mass Markets
	(Dollars in millions)
Segment revenue	$	2,591	699
Segment expenses:
Cost of services and products	739		17
Selling, general and administrative	497		306
Total segment expense	1,236		323
Total segment adjusted EBITDA	$	1,355	376

	Three Months Ended March 31, 2023
	Business		Mass Markets
	(Dollars in millions)
Segment revenue	$	2,968	770
Segment expenses:
Cost of services and products	830		21
Selling, general and administrative	543		335
Total segment expense	1,373		356
Total segment adjusted EBITDA	$	1,595	414

Schedule of Reconciliation of Adjusted EBITDA to Net Income

The following table reconciles total adjusted EBITDA to net income for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
	2024		2023
	(Dollars in millions)
Total segment adjusted EBITDA	$	1,731	2,009
Depreciation and amortization	(748)		(733)
Other unallocated expense	(924)		(872)
Stock-based compensation	(14)		(14)
Operating income	45		390
Total other income, net	57		290
Income before income taxes	102		680
Income tax expense	45		169
Net Income	$	57	$	511