v3.26.1
Reportable Segments (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
Segment
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Segment Reporting Information [Line Items]      
Number of Operating Segments | Segment 2    
Number of Reportable Segments | Segment 2    
Revenue $ 1,245.7 $ 1,095.7  
EBITDA      
Corporate expense (40.7) (32.8)  
Net interest expense (54.8) (47.5)  
Depreciation and amortization (152.3) (138.9)  
Stock-based compensation (37.5) (30.3)  
Mergers and acquisitions, divestitures and business optimization 232.3 (17.9)  
Accelerated technology investment 0.0 (20.0)  
Operating model optimization program 0.0 (9.8)  
Net other (0.7) 56.4  
Net income attributable to non-controlling interests 3.3 4.7  
Total adjustments (50.5) (236.1)  
Income before income taxes 428.1 193.8  
Assets 12,047.3   $ 11,112.9
Segment, Expenditure, Addition to Long-Lived Assets 65.2 68.4  
Depreciation and amortization 152.3 138.9  
Operating Segments      
Segment Reporting Information [Line Items]      
Revenue 1,249.1 1,098.8  
EBITDA      
Segments Adjusted EBITDA 478.6 429.9  
Assets 11,835.4   10,576.9
Segment, Expenditure, Addition to Long-Lived Assets 65.0 68.4  
Depreciation and amortization 151.5 137.8  
Operating Segments | U.S. Markets      
Segment Reporting Information [Line Items]      
Revenue 975.1 856.6  
EBITDA      
Product And Fulfillment 256.0 182.0  
Labor and Related Expense 220.5 215.5  
Communications and Information Technology 70.2 67.0  
Segment Reporting, Other Segment Item, Amount 71.5 72.0  
Segments Adjusted EBITDA 356.9 320.1  
Assets 8,209.6   8,105.3
Segment, Expenditure, Addition to Long-Lived Assets 45.9 44.7  
Depreciation and amortization 108.5 101.2  
Operating Segments | International      
Segment Reporting Information [Line Items]      
Revenue 274.0 242.2  
EBITDA      
Product And Fulfillment 18.8 10.8  
Labor and Related Expense 95.7 84.0  
Communications and Information Technology 13.6 11.3  
Segment Reporting, Other Segment Item, Amount 24.2 26.4  
Segments Adjusted EBITDA 121.7 109.8  
Assets 3,625.8   2,471.6
Segment, Expenditure, Addition to Long-Lived Assets 19.2 23.8  
Depreciation and amortization 42.9 36.6  
Operating Segments | International | Canada      
Segment Reporting Information [Line Items]      
Revenue 43.3 37.8  
Operating Segments | International | Latin America      
Segment Reporting Information [Line Items]      
Revenue 53.9 32.8  
Operating Segments | International | United Kingdom      
Segment Reporting Information [Line Items]      
Revenue 72.2 58.8  
Operating Segments | International | Africa      
Segment Reporting Information [Line Items]      
Revenue 20.9 16.9  
Operating Segments | International | India      
Segment Reporting Information [Line Items]      
Revenue 61.6 68.8  
Operating Segments | International | Asia Pacific      
Segment Reporting Information [Line Items]      
Revenue 22.1 27.0  
Intersegment Eliminations      
Segment Reporting Information [Line Items]      
Revenue (3.4) (3.1)  
Intersegment Eliminations | U.S. Markets      
Segment Reporting Information [Line Items]      
Revenue (1.9) (1.6)  
Intersegment Eliminations | International      
Segment Reporting Information [Line Items]      
Revenue (1.5) (1.5)  
Segment Reporting, Reconciling Item, Corporate Nonsegment      
EBITDA      
Assets 211.9   $ 536.0
Segment, Expenditure, Addition to Long-Lived Assets 0.2 0.0  
Depreciation and amortization 0.8 1.1  
Financial Services | Operating Segments | U.S. Markets      
Segment Reporting Information [Line Items]      
Revenue 500.5 403.6  
Emerging Verticals | Operating Segments | U.S. Markets      
Segment Reporting Information [Line Items]      
Revenue 334.7 314.9  
Consumer Interactive | Operating Segments | U.S. Markets      
Segment Reporting Information [Line Items]      
Revenue $ 139.9 $ 138.2