XML 50 R39.htm IDEA: XBRL DOCUMENT v3.25.2
Business Combinations - Acquisition Method for Recording Business Combinations (Detail)
shares in Thousands, $ in Millions
 3 Months Ended 6 Months Ended 282 Months Ended
Jun. 30, 2025
USD ($)
acquisition
Jun. 30, 2024
acquisition
Jun. 30, 2025
USD ($)
acquisition
shares
Jun. 30, 2024
acquisition
Jun. 30, 2025
USD ($)
company
Business Acquisition [Line Items]          
Number of companies acquired 36 30 56 58 770
2025 Acquisitions          
Business Acquisition [Line Items]          
Common Shares Issued (in shares) | shares     49    
Common Shares Value     $ 16.0    
Cash Paid     1,651.7    
Accrued Liability $ 36.3   36.3   $ 36.3
Escrow Deposited 83.9   83.9   83.9
Recorded Earnout Payable     78.9    
Total Recorded Purchase Price 1,866.8   1,866.8   1,866.8
Maximum Potential Earnout Payable 208.0   $ 208.0   208.0
W K Webster & Co Ltd February 1, 2025 (WKW)          
Business Acquisition [Line Items]          
Common Shares Issued (in shares) | shares     0    
Common Shares Value     $ 0.0    
Cash Paid     138.4    
Accrued Liability 1.9   1.9   1.9
Escrow Deposited 0.0   0.0   0.0
Recorded Earnout Payable     13.9    
Total Recorded Purchase Price 154.2   154.2   154.2
Maximum Potential Earnout Payable 28.5   $ 28.5   28.5
Case Group February 26, 2025 (CSG)          
Business Acquisition [Line Items]          
Common Shares Issued (in shares) | shares     0    
Common Shares Value     $ 0.0    
Cash Paid     57.8    
Accrued Liability 3.5   3.5   3.5
Escrow Deposited 6.5   6.5   6.5
Recorded Earnout Payable     15.0    
Total Recorded Purchase Price 82.8   82.8   82.8
Maximum Potential Earnout Payable 84.1   $ 84.1   84.1
Woodruff Sawyer & Co April 10, 2025 (WSC)          
Business Acquisition [Line Items]          
Common Shares Issued (in shares) | shares     0    
Common Shares Value     $ 0.0    
Cash Paid     1,195.5    
Accrued Liability 12.2   12.2   12.2
Escrow Deposited 66.6   66.6   66.6
Recorded Earnout Payable     0.0    
Total Recorded Purchase Price 1,274.3   1,274.3   1,274.3
Maximum Potential Earnout Payable 0.0   $ 0.0   0.0
Seventeen Other Acquisitions          
Business Acquisition [Line Items]          
Common Shares Issued (in shares) | shares     49    
Common Shares Value     $ 16.0    
Cash Paid     260.0    
Accrued Liability 18.7   18.7   18.7
Escrow Deposited 10.8   10.8   10.8
Recorded Earnout Payable     50.0    
Total Recorded Purchase Price 355.5   355.5   355.5
Maximum Potential Earnout Payable $ 95.4   $ 95.4   $ 95.4
Number of companies acquired | acquisition     17