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Business Combinations - Acquisition Method for Recording Business Combinations (Detail) shares in Thousands | 12 Months Ended
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Dec. 31, 2022 USD ($) shares
Devitt Insurance Services Ltd [Member] |
Business Acquisition [Line Items] |
Cash Paid | $ 73,600,000
Accrued Liability | 1,300,000
Escrow Deposited | 3,400,000
Recorded Earnout Payable | 12,600,000
Total Recorded Purchase Price | 90,900,000
Maximum Potential Earnout Payable | 12,500,000
Innovu Group Holding Company Limited [Member] |
Business Acquisition [Line Items] |
Cash Paid | 85,400,000
Total Recorded Purchase Price | $ 85,400,000
F3 Companies [Member] |
Business Acquisition [Line Items] |
Common Shares Issued | shares | 352
Common Share Value | $ 61,700,000
Cash Paid | 33,100,000
Escrow Deposited | 5,000,000.0
Recorded Earnout Payable | 6,100,000
Total Recorded Purchase Price | 105,900,000
Maximum Potential Earnout Payable | 25,000,000.0
M&T Insurance Agency [Member] |
Business Acquisition [Line Items] |
Cash Paid | 171,000,000.0
Total Recorded Purchase Price | $ 171,000,000.0
PIUS Limited LLC [Member] |
Business Acquisition [Line Items] |
Common Shares Issued | shares | 74
Common Share Value | $ 10,600,000
Cash Paid | 35,600,000
Escrow Deposited | 3,800,000
Recorded Earnout Payable | 116,400,000
Total Recorded Purchase Price | 166,400,000
Maximum Potential Earnout Payable | $ 150,000,000.0
Thirty-Two Other Acquisitions [Member] |
Business Acquisition [Line Items] |
Common Shares Issued | shares | 300
Common Share Value | $ 50,600,000
Cash Paid | 457,200,000
Accrued Liability | 41,700,000
Escrow Deposited | 27,000,000.0
Recorded Earnout Payable | 106,900,000
Total Recorded Purchase Price | 683,400,000
Maximum Potential Earnout Payable | $ 230,200,000
2022 Acquisitions [Member] |
Business Acquisition [Line Items] |
Common Shares Issued | shares | 726
Common Share Value | $ 122,900,000
Cash Paid | 855,900,000
Accrued Liability | 43,000,000.0
Escrow Deposited | 39,200,000
Recorded Earnout Payable | 242,000,000.0
Total Recorded Purchase Price | 1,303,000,000.0
Maximum Potential Earnout Payable | $ 417,700,000

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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 + Details
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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6578-128477 + Details
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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 440 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629 + Details
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