Revenue (Tables)

6 Months Ended

Jun. 30, 2024

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table disaggregates various components of the Company's revenue:

	Three Months Ended  June 30,				Six Months Ended  June 30,
(In millions)	2024		2023		2024		2023
Marsh:
EMEA	$	912	$	858	$	1,937	$	1,790
Asia Pacific	391		357		727		669
Latin America	137		137		262		252
Total International	1,440		1,352		2,926		2,711
U.S./Canada	1,825		1,686		3,342		3,071
Total Marsh	3,265		3,038		6,268		5,782
Guy Carpenter	632		576		1,780		1,647
Subtotal	3,897		3,614		8,048		7,429
Fiduciary interest income	125		108		247		199
Total Risk and Insurance Services	$	4,022	$	3,722	$	8,295	$	7,628
Mercer:
Wealth	$	612	$	637	$	1,284	$	1,218
Health	547		518		1,085		1,063
Career	220		219		435		437
Total Mercer	1,379		1,374		2,804		2,718
Oliver Wyman Group	837		798		1,626		1,485
Total Consulting	$	2,216	$	2,172	$	4,430	$	4,203

Schedule of Contract Assets and Liabilities

The following table provides contract assets and contract liabilities information from contracts with customers:

(In millions)	June 30, 2024		December 31, 2023
Contract assets	$	430	$	357
Contract liabilities	$	885	$	869