Revenue (Tables)

6 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

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

	Three Months Ended  June 30,				Six Months Ended  June 30,
(In millions)	2023		2022		2023		2022
Marsh:
EMEA (a) (b)	$	858	$	780	$	1,790	$	1,649
Asia Pacific (a)	357		347		669		641
Latin America	137		118		252		222
Total International	1,352		1,245		2,711		2,512
U.S./Canada	1,686		1,533		3,071		2,812
Total Marsh	3,038		2,778		5,782		5,324
Guy Carpenter	576		522		1,647		1,521
Subtotal	3,614		3,300		7,429		6,845
Fiduciary interest income	108		13		199		17
Total Risk and Insurance Services	$	3,722	$	3,313	$	7,628	$	6,862
Mercer:
Wealth (c)	$	637	$	597	$	1,218	$	1,214
Health (d)	518		587		1,063		1,111
Career	219		205		437		407
Total Mercer	1,374		1,389		2,718		2,732
Oliver Wyman Group (b)	798		695		1,485		1,362
Total Consulting	$	2,172	$	2,084	$	4,203	$	4,094

(a) In the first quarter of 2023, the Company began reporting the Marsh India operations in EMEA. Prior year results for India have been reclassified from Asia Pacific to EMEA for comparative purposes.

(b) Revenue for the six months ended June 30, 2022, includes the loss on deconsolidation of the Company's Russian businesses at Marsh and Oliver Wyman Group of $27 million and $12 million, respectively.

(c) Revenue for the six months ended June 30, 2023, includes the loss on sale of an individual financial advisory business in Canada of $17 million.

(d) Revenue for the three and six months ended June 30, 2022, includes a gain from the sale of the Mercer U.S. affinity business of $112 million.

Schedule of Contract with Customer, Asset and Liability

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

(In millions)	June 30, 2023		December 31, 2022
Contract assets	$	378	$	335
Contract liabilities	$	906	$	837