Discontinued Operations - Summary of Income (loss) from Discontinued Operations on Condensed Consolidated Statements of Comprehensive Income (loss) (Details) - Divested Business - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 13	$ 249	$ 37	$ 506
Cost of services, exclusive of depreciation and amortization	13	167	37	354
Depreciation and amortization	0	0	0	3
Gross Profit	0	82	0	149
Operating Expenses
Selling, general and administrative	0	52	0	89
Depreciation and intangible amortization	0	0	0	8
Goodwill Impairment	0	0	0	0
Total Operating Expenses	0	52	0	97
Income (loss) from Discontinued Operations	0	30	0	52
Interest expense	0	0	0	0
Other (income) expense, net	0	0	0	2
Income (Loss) from Discontinued Operations Before Income Taxes	0	30	0	50
Loss on sale of disposition, net of tax	1	0	8	0
Income tax expense (benefit)	0	3	1	18
Net Income (Loss) from Discontinued Operations, Net of Tax	$ (1)	$ 27	$ (9)	$ 32