Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Condensed Consolidated Statements of Operations and Comprehensive Income [Abstract]
Revenue	$ 617	$ 542	$ 1,043	$ 920
Cost of services rendered	261	237	452	420
Gross Profit	356	306	591	500
Selling and administrative expenses	172	167	323	302
Depreciation and amortization expense	21	9	44	18
Restructuring charges	0	1	0	1
Interest expense	20	10	39	20
Interest and net investment income	(4)	(5)	(10)	(10)
Income before Income Taxes	146	124	194	169
Provision for income taxes	36	32	46	43
Net Income	111	92	148	126
Other Comprehensive Loss, Net of Income Taxes:
Unrealized loss on derivative instruments, net of income taxes	(5)	(1)	(12)	0
Total Other Comprehensive Loss, Net of Income Taxes	(5)	(1)	(12)	0
Comprehensive Income	$ 106	$ 91	$ 136	$ 126
Earnings per Share:
Basic	$ 1.51	$ 1.18	$ 2	$ 1.61
Diluted	$ 1.48	$ 1.18	$ 1.96	$ 1.6
Weighted-average Common Shares Outstanding:
Basic	73.5	77.7	74.1	78.0
Diluted	74.7	78.1	75.3	78.5