Revenue (Tables)

6 Months Ended

Jun. 30, 2019

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

Revenue in our principal geographic markets for the three and six months ended June 30, 2019 and 2018 was (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Americas:
North America	$	2,118.4	$	2,097.4	$	4,107.6	$	4,083.1
Latin America	96.9		115.1		185.8		223.5
EMEA:
Europe	1,035.9		1,142.6		1,981.4		2,212.7
Middle East and Africa	61.0		70.2		140.0		143.6
Asia-Pacific	407.6		434.3		773.9		826.3
	$	3,719.8	$	3,859.6	$	7,188.7	$	7,489.2

Revenue by discipline for the three and six months ended June 30, 2019 and 2018 was (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Advertising	$	2,093.9	$	2,067.6	$	4,015.3	$	3,968.9
CRM Consumer Experience	659.5		660.0		1,265.3		1,294.9
CRM Execution & Support	326.1		498.7		675.6		1,007.2
Public Relations	349.3		362.7		683.4		709.1
Healthcare	291.0		270.6		549.1		509.1
	$	3,719.8	$	3,859.6	$	7,188.7	$	7,489.2

Work in Process and Contract Liabilities

At June 30, 2019, December 31, 2018 and June 30, 2018 work in process and contract liabilities were (in millions):

	June 30, 2019		December 31, 2018		June 30, 2018
Work in process:
Contract assets and unbilled fees and costs	$	785.7	$	540.1	$	709.2
Media and production costs	577.8		621.4		644.3
	$	1,363.5	$	1,161.5	$	1,353.5
Contract liabilities:
Customer advances	$	1,094.1	$	1,159.0	$	1,147.1