Revenue from Contracts with Customers

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

Revenue from Contracts with Customers

Disaggregation of Revenue

The following table summarizes revenue from contracts with customers by principal service line (in millions). Prior year amounts from the Consolidated Financial Statements have been reclassified to conform to the current year’s presentation. Refer to Note 1 “Basis of Presentation” for further information regarding the changes to the Company’s principal service lines.

	Years Ended December 31
	2021		2020		2019
Commercial Risk Solutions	$	6,635	$	5,861	$	5,857
Reinsurance Solutions	1,997		1,814		1,686
Health Solutions	2,154		2,067		2,104
Wealth Solutions	1,426		1,341		1,380
Elimination	(19)		(17)		(14)
Total revenue	$	12,193	$	11,066	$	11,013

Consolidated revenue from contracts with customers by geographic area, which is attributed on the basis of where the services are performed, is as follows (in millions):

	Years Ended December 31
	2021		2020		2019
U.S.	$	5,459	$	5,032	$	5,016
Americas other than U.S.	1,027		911		919
U.K.	1,681		1,579		1,502
Ireland	127		84		75
Europe, Middle East, & Africa other than U.K. and Ireland	2,565		2,236		2,263
Asia Pacific	1,334		1,224		1,238
Total revenue	$	12,193	$	11,066	$	11,013

Contract Costs

Changes in the net carrying amount of costs to fulfill contracts with customers are as follows (in millions):

	2021		2020
Balance at beginning of period	$	339	$	335
Additions	1,504		1,360
Amortization	(1,478)		(1,360)
Impairment	—		—
Foreign currency translation and other	(4)		4
Balance at end of period	$	361	$	339

Changes in the net carrying amount of costs to obtain contracts with customers are as follows (in millions):

	2021		2020
Balance at beginning of period	$	184	$	171
Additions	59		61
Amortization	(48)		(47)
Impairment	—		—
Foreign currency translation and other	(16)		(1)
Balance at end of period	$	179	$	184