XML 46 R34.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Business Combinations (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Business Combinations [Abstract] |
Acquisition Method for Recording Business Combinations | During 2024, we acquired substantially all of the ownership interests or net assets, as applicable, of the following firms in exchange for our common stock and/or cash. 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 Share Value |  |  | Cash Paid |  |  | Accrued Liability |  |  | Escrow Deposited |  |  | Recorded Earnout Payable |  |  | Total Recorded Purchase Price |  |  | Maximum Potential Earnout Payable |
|  | (000s) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ericson Insurance Services, LLC January 1, 2024 (EIS) |  |  | 129 |  |  | $ | 30.1 |  |  | $ | 26.5 |  |  | $ | — |  |  | $ | 3.0 |  |  | $ | 7.3 |  |  | $ | 66.9 |  |  | $ | 10.0 |
The Rowley Agency, LLC January 1, 2024 (TRA) |  |  | — |  |  |  | — |  |  |  | 117.2 |  |  |  | — |  |  |  | 11.0 |  |  |  | — |  |  |  | 128.2 |  |  |  | — |
OperationsInc, LLC June 1, 2024 (OPR) |  |  | — |  |  |  | — |  |  |  | 52.6 |  |  |  | — |  |  |  | 2.8 |  |  |  | 11.0 |  |  |  | 66.4 |  |  |  | 20.0 |
RIBV Holdings, LLC October 1, 2024 (RIBV) |  |  | — |  |  |  | — |  |  |  | 171.4 |  |  |  | 6.5 |  |  |  | 5.1 |  |  |  | 24.3 |  |  |  | 207.3 |  |  |  | 50.0 |
Redington Limited October 24, 2024 (RED) |  |  | — |  |  |  | — |  |  |  | 199.3 |  |  |  | 0.4 |  |  |  | 0.7 |  |  |  | — |  |  |  | 200.4 |  |  |  | — |
Forty-three other acquisitions completed in 2024 |  |  | 231 |  |  |  | 48.8 |  |  |  | 806.5 |  |  |  | 9.1 |  |  |  | 44.4 |  |  |  | 121.8 |  |  |  | 1,030.6 |  |  |  | 288.6 |
|  |  | 360 |  |  | $ | 78.9 |  |  | $ | 1,373.5 |  |  | $ | 16.0 |  |  | $ | 67.0 |  |  | $ | 164.4 |  |  | $ | 1,699.8 |  |  | $ | 368.6 |
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 2024 (in millions):
|  | EIS |  |  | TRA |  |  | OPR |  |  | RIBV |  |  | RED |  |  | Forty-three Other Acquisitions |  |  | Total |
Cash and cash equivalents |  | $ | 0.1 |  |  | $ | 4.1 |  |  | $ | 0.8 |  |  | $ | 1.5 |  |  | $ | 19.9 |  |  | $ | 24.3 |  |  | $ | 50.7 |
Fiduciary assets |  |  | 1.0 |  |  |  | 2.6 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 49.5 |  |  |  | 53.1 |
Other current assets |  |  | 3.4 |  |  |  | 0.5 |  |  |  | 2.7 |  |  |  | 28.7 |  |  |  | 6.8 |  |  |  | 66.0 |  |  |  | 108.1 |
Fixed assets |  |  | — |  |  |  | 0.4 |  |  |  | — |  |  |  | 2.8 |  |  |  | 2.9 |  |  |  | 5.5 |  |  |  | 11.6 |
Noncurrent assets |  |  | 0.1 |  |  |  | 1.7 |  |  |  | 2.0 |  |  |  | 0.2 |  |  |  | 3.6 |  |  |  | 9.2 |  |  |  | 16.8 |
Goodwill |  |  | 29.6 |  |  |  | 59.4 |  |  |  | 41.9 |  |  |  | 92.4 |  |  |  | 107.0 |  |  |  | 506.9 |  |  |  | 837.2 |
Expiration lists |  |  | 34.2 |  |  |  | 64.1 |  |  |  | 22.1 |  |  |  | 98.7 |  |  |  | 84.2 |  |  |  | 488.2 |  |  |  | 791.5 |
Non-compete agreements |  |  | 0.2 |  |  |  | 0.3 |  |  |  | 0.2 |  |  |  | 0.2 |  |  |  | 8.8 |  |  |  | 13.9 |  |  |  | 23.6 |
Trade names |  |  | 0.2 |  |  |  | — |  |  |  | — |  |  |  | 0.9 |  |  |  | — |  |  |  | 0.8 |  |  |  | 1.9 |
Total assets acquired |  |  | 68.8 |  |  |  | 133.1 |  |  |  | 69.7 |  |  |  | 225.4 |  |  |  | 233.2 |  |  |  | 1,164.3 |  |  |  | 1,894.5 |
Fiduciary liabilities |  |  | 1.0 |  |  |  | 2.6 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 49.5 |  |  |  | 53.1 |
Current liabilities |  |  | 0.8 |  |  |  | 0.6 |  |  |  | 1.1 |  |  |  | 11.9 |  |  |  | 5.9 |  |  |  | 37.3 |  |  |  | 57.6 |
Noncurrent liabilities |  |  | 0.1 |  |  |  | 1.7 |  |  |  | 2.2 |  |  |  | 6.2 |  |  |  | 26.9 |  |  |  | 46.9 |  |  |  | 84.0 |
Total liabilities assumed |  |  | 1.9 |  |  |  | 4.9 |  |  |  | 3.3 |  |  |  | 18.1 |  |  |  | 32.8 |  |  |  | 133.7 |  |  |  | 194.7 |
Total net assets acquired |  | $ | 66.9 |  |  | $ | 128.2 |  |  | $ | 66.4 |  |  | $ | 207.3 |  |  | $ | 200.4 |  |  | $ | 1,030.6 |  |  | $ | 1,699.8 |
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, 2023 (in millions, except per share data):
|  | Year Ended December 31, |
|  | 2024 |  |  | 2023 |
Total revenues |  | $ | 11,766.9 |  |  | $ | 10,458.0 |
Net earnings attributable to controlling interests |  |  | 1,457.0 |  |  |  | 963.1 |
Basic net earnings per share |  |  | 6.61 |  |  |  | 4.47 |
Diluted net earnings per share |  |  | 6.48 |  |  |  | 4.38 |

X
- Definition Schedule Of Business Acquisition, Acquisition of assets [Text Block] + References No definition available. + Details
Name: | ajg_ScheduleOfBusinessAcquisitionAcquisitionOfAssetsTableTextBlock
Namespace Prefix: | ajg_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Business Acquisition, Pro Forma [Text Block] + References No definition available. + Details
Name: | ajg_ScheduleOfBusinessAcquisitionProFormaTableTextBlock
Namespace Prefix: | ajg_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration