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Revenue (Tables) | 3 Months Ended
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Mar. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following schedule disaggregates components of the Company's revenue:
|  | Three Months Ended March 31,
(In millions) |  | 2020
Marsh: |  |
EMEA |  | $ | 754 |
Asia Pacific |  | 238 |
Latin America |  | 91 |
Total International |  | 1,083 |
U.S./Canada |  | 978 |
Total Marsh |  | 2,061 |
Guy Carpenter |  | 827 |
Subtotal |  | 2,888 |
Fiduciary interest income |  | 23 |
Total Risk and Insurance Services |  | $ | 2,911 |
Mercer: |  |
Wealth |  | $ | 592 |
Health |  | 486 |
Career |  | 173 |
Total Mercer |  | 1,251 |
Oliver Wyman |  | 511 |
Total Consulting |  | $ | 1,762 |
Contract with Customer, Asset and Liability | The following schedule provides contract assets and contract liabilities information from contracts with customers.
(In millions) |  | March 31, 2020 |  | December 31, 2019
Contract Assets |  | $ | 270 |  |  | $ | 207 |
Contract Liabilities |  | $ | 659 |  |  | $ | 593 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 + Details
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