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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Statement [Abstract]      
Revenues $ 3,950.6 $ 3,923.9 $ 3,399.8
Cost of services 2,861.3 2,793.9 2,376.1
Gross profit 1,089.3 1,130.0 1,023.7
Selling, general and administrative expenses 727.2 770.3 705.0
Amortization of intangible assets 51.7 51.1 58.5
Operating income 310.4 308.6 260.2
Interest expense (39.7) (52.9) (56.0)
Write-off of loan costs 0.0 (18.9) 0.0
Income before income taxes 270.7 236.8 204.2
Provision for income taxes 70.4 62.0 46.2
Income from continuing operations 200.3 174.8 158.0
Loss from discontinued operations, net of income taxes 0.0 (0.1) (0.3)
Net income $ 200.3 $ 174.7 $ 157.7
Earnings per share:      
Basic earnings per share $ 3.80 $ 3.31 $ 3.02
Diluted earnings per share $ 3.76 $ 3.28 $ 2.98
Number of shares and share equivalents used to calculate earnings per share:      
Basic (in shares) 52.7 52.8 52.3
Diluted (in shares) 53.3 53.4 53.1
Reconciliation of net income to comprehensive income:      
Net Income $ 200.3 $ 174.7 $ 157.7
Foreign currency translation adjustment 6.0 (0.7) (2.7)
Comprehensive income $ 206.3 $ 174.0 $ 155.0