Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue
Segment revenue	$ 754	$ 828	$ 1,505	$ 1,749
Operating Costs and Expenses
Cost of services (excluding depreciation and amortization)	617	677	1,235	1,412
Selling, general and administrative (excluding depreciation and amortization)	100	115	220	231
Research and development (excluding depreciation and amortization)	1	1	2	3
Depreciation and amortization	48	51	96	113
Restructuring and related costs	8	8	12	17
Interest expense	12	19	24	46
(Gain) loss on divestitures and transaction costs, net	4	(347)	7	(508)
Litigation settlements (recoveries), net	0	1	2	5
Loss on extinguishment of debt	0	3	0	5
Other (income) expenses, net	2	0	1	(2)
Total Operating Costs and Expenses	792	528	1,599	1,322
Income (Loss) Before Income Taxes	(38)	300	(94)	427
Income tax expense (benefit)	2	84	(3)	112
Net Income (Loss)	$ (40)	$ 216	$ (91)	$ 315
Net Income (Loss) per Share:
Basic (in USD per share)	$ (0.26)	$ 1.10	$ (0.59)	$ 1.54
Diluted (in USD per share)	$ (0.26)	$ 1.07	$ (0.59)	$ 1.51