Segments - Schedule of Operations Information of Operating Segment (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenue		$ 1,843	$ 1,780	$ 1,662
Cost of services rendered		852	895	952
Sales and marketing costs		307	299	253
Customer service costs		104	106	112
General and administrative costs		201	176	157
Other segment items	[1]	145	133	117
Net Income		235	171	71
Total Assets		$ 2,107	$ 1,089	$ 1,082

[1] Other segment items include depreciation and amortization expense, goodwill and intangible impairment, restructuring charges, interest expense, interest and net investment income, loss on extinguishment of debt and provision for income taxes.