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v3.20.1

Nature of Operations (Details) colleague in Thousands, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 USD ($) colleague country | Mar. 31, 2019 USD ($)
Nature of Operations [Line Items] |  |
Entity number of colleagues | colleague | 76 |
Revenue | $ 4,651 | $ 4,071
Number of countries in which entity operates (more than) | country | 130 |
Support fund | $ 5 |
Marsh & McLennan Companies, Inc. |  |
Nature of Operations [Line Items] |  |
Revenue | $ 17,000 |

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- Definition Support Fund + References No definition available. + Details
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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 + Details
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- Details
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