Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net services revenue ($216.7 million and $215.5 million for the three months ended March 31, 2022 and 2021, from related party, respectively)	$ 385.7	$ 342.6
Operating expenses:
Cost of services	296.5	267.2
Selling, general and administrative	28.9	25.6
Other expenses	17.1	13.0
Total operating expenses	342.5	305.8
Income from operations	43.2	36.8
Net interest expense	4.7	3.9
Income before income tax provision	38.5	32.9
Income tax provision	9.1	7.1
Net income	$ 29.4	$ 25.8
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.11	$ (2.37)
Diluted (in dollars per share)	$ 0.09	$ (2.37)
Weighted average shares used in calculating net income (loss) per common share:
Basic (in shares)	278,747,261	239,290,145
Diluted (in shares)	321,043,371	239,290,145
Consolidated statements of comprehensive income
Net income	$ 29.4	$ 25.8
Other comprehensive income (loss):
Net change on derivatives designated as cash flow hedges, net of tax	0.1	0.5
Foreign currency translation adjustments	(1.4)	(0.4)
Total other comprehensive income (loss), net of tax	(1.3)	0.1
Comprehensive income	28.1	25.9
Basic:
Net income	29.4	25.8
Less dividends on preferred shares	0.0	(592.3)
Net income (loss) available/allocated to common shareholders - basic	29.4	(566.5)
Diluted:
Net income	29.4	25.8
Less dividends on preferred shares	0.0	(592.3)
Net income (loss) available/allocated to common shareholders - diluted	$ 29.4	$ (566.5)