Segment Information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Schedule of segment information

The following tables summarize our segment results for 2022, 2021 and 2020 based on the segment categorization we were operating under at December 31, 2022.

	Year Ended December 31, 2022
	Business		Mass Markets	Total Segments	Operations and Other	Total
	(Dollars in millions)
Revenue:	$	13,039	4,439	17,478	—	17,478
Expenses:
Cost of services and products	3,260		123	3,383	4,485	7,868
Selling, general and administrative	1,101		562	1,663	1,415	3,078
Gain on sale of businesses	—		—	—	(773)	(773)
Loss on disposal groups held for sale	—		—	—	700	700
Less: stock-based compensation	—		—	—	(98)	(98)
Total expense	4,361		685	5,046	5,729	10,775
Total adjusted EBITDA	$	8,678	3,754	12,432	(5,729)	6,703

	Year Ended December 31, 2021
	Business		Mass Markets	Total Segments	Operations and Other	Total
	(Dollars in millions)
Revenue:	$	14,119	5,568	19,687	—	19,687
Expenses:
Cost of services and products	3,488		153	3,641	4,847	8,488
Selling, general and administrative	1,178		539	1,717	1,178	2,895
Less: stock-based compensation	—		—	—	(120)	(120)
Total expense	4,666		692	5,358	5,905	11,263
Total adjusted EBITDA	$	9,453	4,876	14,329	(5,905)	8,424

	Year Ended December 31, 2020
	Business		Mass Markets	Total Segments	Operations and Other	Total
	(Dollars in millions)
Revenue:	$	14,808	5,904	20,712	—	20,712
Expenses:
Cost of services and products	3,661		201	3,862	5,072	8,934
Selling, general and administrative	1,262		581	1,843	1,621	3,464
Less: stock-based compensation	—		—	—	(175)	(175)
Total expense	4,923		782	5,705	6,518	12,223
Total adjusted EBITDA	$	9,885	5,122	15,007	(6,518)	8,489

Schedule of reconciliation from segment income to consolidated net income

The following table reconciles total segment adjusted EBITDA to net (loss) income for the years ended December 31, 2022, 2021 and 2020:

	Years Ended December 31,
	2022		2021	2020
	(Dollars in millions)
Total segment adjusted EBITDA	$	12,432	14,329	15,007
Depreciation and amortization	(3,239)		(4,019)	(4,710)
Goodwill impairment	(3,271)		—	(2,642)
Operations and other expenses	(5,729)		(5,905)	(6,518)
Stock-based compensation	(98)		(120)	(175)
Operating income	95		4,285	962
Total other expense, net	(1,086)		(1,584)	(1,744)
(Loss) income before income taxes	(991)		2,701	(782)
Income tax expense	557		668	450
Net (loss) income	$	(1,548)	2,033	(1,232)