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Business Combinations (Tables) | 6 Months Ended
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Jun. 30, 2025
Business Combinations [Abstract] |
Acquisition Method for Recording Business Combinations | These acquisitions have been accounted for using the acquisition method for recording business combinations (in millions, except share data):
Name and Effective Date of Acquisition |  | Common Shares Issued |  | Common Shares Value |  | Cash Paid |  | Accrued Liability |  | Escrow Deposited |  | Recorded Earnout Payable |  | Total Recorded Purchase Price |  | Maximum Potential Earnout Payable
|  | (000s) |  |  |  |  |  |  |  |  |  |  |  |  |  |
W K Webster & Co Ltd February 1, 2025 (WKW) |  | — |  | $ | — |  |  | $ | 138.4 |  |  | $ | 1.9 |  |  | $ | — |  |  | $ | 13.9 |  |  | $ | 154.2 |  |  | $ | 28.5 |
Case Group February 26, 2025 (CSG) |  | — |  | — |  |  | 57.8 |  |  | 3.5 |  |  | 6.5 |  |  | 15.0 |  |  | 82.8 |  |  | 84.1 |
Woodruff Sawyer & Co April 10, 2025 (WSC) |  | — |  | — |  |  | 1,195.5 |  |  | 12.2 |  |  | 66.6 |  |  | — |  |  | 1,274.3 |  |  | — |
Seventeen other acquisitions completed in 2025 |  | 49 |  | 16.0 |  |  | 260.0 |  |  | 18.7 |  |  | 10.8 |  |  | 50.0 |  |  | 355.5 |  |  | 95.4 |
|  | 49 |  | $ | 16.0 |  |  | $ | 1,651.7 |  |  | $ | 36.3 |  |  | $ | 83.9 |  |  | $ | 78.9 |  |  | $ | 1,866.8 |  |  | $ | 208.0 |
Summary of Estimated Fair Values of Net Assets Acquired | The following is a summary of the estimated fair values of the net assets acquired at the date of each acquisition made in the six-month period ended June 30, 2025 (in millions):
| WKW |  | CSG |  | WSC | Seventeen Other Acquisitions |  | Total
Cash and cash equivalents | $ | 5.3 |  |  | $ | 5.6 |  |  | $ | 61.9 |  | $ | 20.7 |  |  | $ | 93.5 |
Fiduciary assets | 86.8 |  |  | — |  |  | 465.3 |  | 41.6 |  |  | 593.7 |
Other current assets | 16.7 |  |  | 4.0 |  |  | 77.6 |  | 8.7 |  |  | 107.0 |
Fixed assets | 1.1 |  |  | 1.0 |  |  | 12.8 |  | 1.1 |  |  | 16.0 |
Noncurrent assets | 2.2 |  |  | — |  |  | 25.0 |  | 2.9 |  |  | 30.1 |
Goodwill | 83.7 |  |  | 49.5 |  |  | 658.1 |  | 236.4 |  |  | 1,027.7 |
Expiration lists | 70.9 |  |  | 36.2 |  |  | 673.4 |  | 155.2 |  |  | 935.7 |
Non-compete agreements | 7.9 |  |  | 7.3 |  |  | 2.4 |  | 4.0 |  |  | 21.6 |
Total assets acquired | 274.6 |  |  | 103.6 |  |  | 1,976.5 |  | 470.6 |  |  | 2,825.3 |
Fiduciary liabilities | 86.8 |  |  | — |  |  | 465.3 |  | 41.6 |  |  | 593.7 |
Current liabilities | 11.8 |  |  | 7.3 |  |  | 35.2 |  | 10.8 |  |  | 65.1 |
Noncurrent liabilities | 21.8 |  |  | 13.5 |  |  | 201.7 |  | 62.7 |  |  | 299.7 |
Total liabilities assumed | 120.4 |  |  | 20.8 |  |  | 702.2 |  | 115.1 |  |  | 958.5 |
Total net assets acquired | $ | 154.2 |  |  | $ | 82.8 |  |  | $ | 1,274.3 |  | $ | 355.5 |  |  | $ | 1,866.8 |
Summary of Unaudited Pro Forma Historical Results | The following is a summary of the unaudited pro forma historical results, as if these entities had been acquired at January 1, 2024 (in millions, except per share data):
| Three-month period ended June 30, |  | Six-month period ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Total revenues | $ | 3,229.5 |  |  | $ | 2,872.1 |  |  | $ | 7,031.7 |  |  | $ | 6,218.5 |
Net earnings attributable to controlling interests | 366.4 |  |  | 282.4 |  |  | 1,060.4 |  |  | 881.2 |
Basic net earnings per share | 1.43 |  |  | 1.29 |  |  | 4.15 |  |  | 4.04 |
Diluted net earnings per share | 1.41 |  |  | 1.27 |  |  | 4.08 |  |  | 3.96 |

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