CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues	$ 972.3	$ 878.5	$ 1,896.0	$ 1,563.7
Cost of services	687.1	614.6	1,346.9	1,082.1
Gross profit	285.2	263.9	549.1	481.6
Selling, general and administrative expenses	198.8	179.7	386.2	344.1
Amortization of intangible assets	13.1	18.5	26.9	26.1
Operating income	73.3	65.7	136.0	111.4
Interest expense	(14.0)	(20.5)	(28.5)	(27.1)
Income before income taxes	59.3	45.2	107.5	84.3
Provision for income taxes	16.2	11.5	29.5	21.4
Income from continuing operations	43.1	33.7	78.0	62.9
Loss from discontinued operations, net of income taxes	0.0	(0.1)	0.0	(0.2)
Net income	$ 43.1	$ 33.6	$ 78.0	$ 62.7
Earnings per share:
Basic	$ 0.82	$ 0.64	$ 1.48	$ 1.20
Diluted	$ 0.81	$ 0.63	$ 1.46	$ 1.19
Number of shares and share equivalents used to calculate earnings per share:
Basic	52.8	52.3	52.7	52.2
Diluted	53.4	53.0	53.3	52.9
Reconciliation of net income to comprehensive income:
Net income	$ 43.1	$ 33.6	$ 78.0	$ 62.7
Foreign currency translation adjustment	1.0	(2.7)	(0.1)	(1.2)
Comprehensive income	$ 44.1	$ 30.9	$ 77.9	$ 61.5