Discontinued Operations - Additional Information (Details) - Divested Business - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions		3 Months Ended
	Jul. 12, 2024	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total consideration	$ 1,200
Proceeds from divestiture of businesses	1,000
Aggregate principal amount, consideration	50
Aggregate principal amount, contingent consideration	150
Fair value contingent consideration	$ 43	$ 36		$ 50
Stated interest rate	8.00%
Initial period	18 months
Option to extend	6 months
Transition services agreement	$ 15
TSA services income		10
Pass-through costs		15
Revenue		24	$ 257
Loss on sale		7	0
Cost of services, exclusive of depreciation and amortization		24	$ 187
Customer Care Commercial Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue		12
Cloud Services Segments
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cost of services, exclusive of depreciation and amortization		$ 24
Fair Value
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair value consideration	$ 35