v3.26.1
Segment Information (Tables)
3 Months Ended
Mar. 31, 2026
Segment Reporting [Abstract]  
Schedule of Segment Information
The following tables present selected financial information with respect to our single operating segment:

 Three Months Ended March 31,
 20262025
 (Dollars in millions)
Revenue$2,899 3,182 
Operating expenses
Cost of services and products related to network expenses837 1,018 
Headcount costs643 619 
Non-headcount costs736 715 
Net gain on sale of business(596)— 
Stock-based compensation13 10 
Depreciation and amortization664 713 
Total operating expenses
2,297 3,075 
Total operating income602 107 
Total other expense, net(425)(352)
Income (loss) before income taxes
177 (245)
Income tax expense (benefit)377 (44)
Net loss$(200)(201)

Three Months Ended March 31,
20262025
(Dollars in millions)
Revenue$2,899 3,182 
Operating expenses
Cost of services and products related to network expenses837 1,018 
Headcount costs643 619 
Non-headcount costs736 715 
Net gain on sale of business(596)— 
Adjusted EBITDA
$1,279 830 
Three Months Ended March 31,
20262025
(Dollars in millions)
Net loss
$(200)(201)
Stock-based compensation13 10 
Depreciation and amortization664 713 
Total other expense, net(425)(352)
Income tax expense (benefit)377 (44)
Adjusted EBITDA
$1,279 830