Revenue (Tables)

12 Months Ended

Dec. 31, 2018

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

Revenue in our principal geographic markets for the year ended December 31, 2018 and 2017 was (in millions):

	2018		2018 Excluding Impact of Adoption of ASC 606		2017
Americas:
North America	$	8,442.5	$	8,589.4	$	8,686.0
Latin America	457.5		456.2		494.8
EMEA:
Europe	4,375.4		4,377.2		4,127.9
Middle East and Africa	304.4		304.4		314.6
Asia-Pacific	1,710.4		1,709.1		1,650.3
	$	15,290.2	$	15,436.3	$	15,273.6

Revenue by discipline for the year ended December 31, 2018 and 2017 was (in millions):

	2018		2018 Excluding Impact of Adoption of ASC 606		2017
Advertising	$	8,281.0	$	8,289.1	$	8,175.9
CRM Consumer Experience	2,620.7		2,758.3		2,615.9
CRM Execution & Support	1,900.5		1,900.4		2,135.8
Public Relations	1,435.1		1,435.5		1,411.4
Healthcare	1,052.9		1,053.0		934.6
	$	15,290.2	$	15,436.3	$	15,273.6

Work in Process and Contract Liabilities

At December 31, 2018 and 2017, work in process and contract liabilities were (in millions):

	2018		2017
Work in process:
Contract assets and unbilled fees and costs	$	540.1	$	546.3
Media and production costs	621.4		564.3
	$	1,161.5	$	1,110.6
Contract liabilities:
Customer advances	$	1,159.0	$	1,266.7