Revenue (Tables)

3 Months Ended

Mar. 31, 2021

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)	2021		2020
Marsh:
EMEA	$	837	$	754
Asia Pacific	274		238
Latin America	90		91
Total International	1,201		1,083
U.S./Canada	1,124		978
Total Marsh	2,325		2,061
Guy Carpenter	895		827
Subtotal	3,220		2,888
Fiduciary interest income	5		23
Total Risk and Insurance Services	$	3,225	$	2,911
Mercer:
Wealth	$	623	$	592
Health	487		486
Career	178		173
Total Mercer	1,288		1,251
Oliver Wyman	585		511
Total Consulting	$	1,873	$	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, 2021		December 31, 2020
Contract Assets	$	304	$	236
Contract Liabilities	$	737	$	676