Revenue (Tables)

12 Months Ended

Dec. 31, 2020

Disaggregation of Revenue [Line Items]

Work in Process and Contract Liabilities

Work in process and contract liabilities were (in millions):

	December 31,
	2020		2019
Work in process:
Contract assets and unbilled fees and costs	$	501.1	$	689.2
Media and production costs	600.1		568.4
	$	1,101.2	$	1,257.6
Contract liabilities:
Customer advances	$	1,361.3	$	1,215.3

Geographic Markets [Member]

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

Revenue in our principal geographic markets was (in millions):

	Year Ended December 31,
	2020		2019		2018
Americas:
North America	$	7,577.1	$	8,478.8	$	8,442.5
Latin America	275.4		403.4		457.5
EMEA:
Europe	3,607.7		4,107.4		4,375.4
Middle East and Africa	207.2		314.6		304.4
Asia-Pacific	1,503.7		1,649.5		1,710.4
	$	13,171.1	$	14,953.7	$	15,290.2

Discipline [Member]

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

Revenue by discipline was (in millions):

	Year Ended December 31,
	2020		2019		2018
Advertising	$	7,369.0	$	8,483.8	$	8,281.0
CRM Consumer Experience	2,175.7		2,577.9		2,629.6
CRM Execution & Support	1,133.5		1,361.2		1,891.6
Public Relations	1,301.8		1,378.9		1,435.1
Healthcare	1,191.1		1,151.9		1,052.9
	$	13,171.1	$	14,953.7	$	15,290.2