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Business Combinations - Acquisition Method for Recording Business Combinations (Detail) shares in Thousands | 9 Months Ended
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Sep. 30, 2019 USD ($) shares
Business Acquisition [Line Items] |
Common Shares Issued | shares | 608
Common Share Value | $ 48,000,000.0
Cash Paid | 964,400,000
Accrued Liability | 38,300,000
Escrow Deposited | 52,600,000
Recorded Earnout Payable | 169,300,000
Total Recorded Purchase Price | 1,272,600,000
Maximum Potential Earnout Payable | $ 288,700,000
Inverson Holding Company - Company, LLC (IHC) [Member] |
Business Acquisition [Line Items] |
Common Shares Issued | shares | 452
Common Share Value | $ 35,900,000
Cash Paid | 31,200,000
Escrow Deposited | 4,500,000
Recorded Earnout Payable | 20,900,000
Total Recorded Purchase Price | 92,500,000
Maximum Potential Earnout Payable | 35,000,000.0
James Brown Inc. (JBI) [Member] |
Business Acquisition [Line Items] |
Cash Paid | 65,900,000
Escrow Deposited | 8,700,000
Total Recorded Purchase Price | 74,600,000
Limited SPG [Member] |
Business Acquisition [Line Items] |
Cash Paid | 326,800,000
Escrow Deposited | 4,800,000
Total Recorded Purchase Price | 331,600,000
RPA Insurance Services LLC [Member] |
Business Acquisition [Line Items] |
Cash Paid | 44,000,000.0
Escrow Deposited | 3,900,000
Recorded Earnout Payable | 16,900,000
Total Recorded Purchase Price | 64,800,000
Maximum Potential Earnout Payable | 22,000,000.0
JLT Aerospace [Member] |
Business Acquisition [Line Items] |
Cash Paid | 162,800,000
Recorded Earnout Payable | 63,600,000
Total Recorded Purchase Price | 226,400,000
Maximum Potential Earnout Payable | 75,100,000
RGA Group [Member] |
Business Acquisition [Line Items] |
Cash Paid | 42,800,000
Accrued Liability | 6,000,000.0
Escrow Deposited | 4,700,000
Recorded Earnout Payable | 8,000,000.0
Total Recorded Purchase Price | 61,500,000
Maximum Potential Earnout Payable | $ 9,300,000
Thirty Two Other Acquisition [Member] |
Business Acquisition [Line Items] |
Common Shares Issued | shares | 156
Common Share Value | $ 12,100,000
Cash Paid | 290,900,000
Accrued Liability | 32,300,000
Escrow Deposited | 26,000,000.0
Recorded Earnout Payable | 59,900,000
Total Recorded Purchase Price | 421,200,000
Maximum Potential Earnout Payable | $ 147,300,000

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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 http://asc.fasb.org/extlink&oid=35744584&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 http://asc.fasb.org/extlink&oid=116859721&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 http://asc.fasb.org/extlink&oid=116859721&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 http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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