Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Condensed Consolidated Statement of Operations and Comprehensive Income [Abstract]
Revenue	$ 487	$ 462	$ 838	$ 791
Cost of services rendered	276	221	483	402
Gross Profit	211	242	355	390
Selling and administrative expenses	140	136	266	254
Depreciation and amortization expense	8	9	17	19
Restructuring charges	12	1	12	2
Interest expense	7	12	14	25
Interest and net investment income				(1)
Loss on extinguishment of debt		30		31
Income before Income Taxes	43	54	46	60
Provision for income taxes	10	14	12	15
Net Income	33	40	35	45
Other Comprehensive Income, Net of Income Taxes:
Net unrealized gain on derivative instruments	4		17	7
Total Comprehensive Income	$ 37	$ 41	$ 52	$ 53
Earnings per Share:
Basic	$ 0.40	$ 0.47	$ 0.42	$ 0.53
Diluted	$ 0.40	$ 0.47	$ 0.42	$ 0.53
Weighted-average Common Shares Outstanding:
Basic	82.1	85.5	82.2	85.5
Diluted	82.2	86.0	82.4	86.0