Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

Revenue by discipline for the three months ended March 31, 2018 and 2017 was (in millions):

	2018		2018 Excluding Impact of Adoption of ASC 606		2017
Advertising	$	1,901.3	$	1,908.9	$	1,929.0
CRM Consumer Experience	634.9		668.2		613.5
CRM Execution & Support	508.6		510.1		489.3
Public Relations	346.3		346.4		335.1
Healthcare	238.5		238.5		220.5
	$	3,629.6	$	3,672.1	$	3,587.4

Revenue in our principal geographic markets for the three months ended March 31, 2018 and 2017 was (in millions):

	2018		2018 Excluding Impact of Adoption of ASC 606		2017
Americas:
North America	$	1,985.7	$	2,022.8	$	2,139.3
Latin America	108.4		108.1		106.6
EMEA:
Europe	1,070.1		1,075.7		887.6
Middle East and Africa	73.4		73.4		78.9
Asia Pacific	392.0		392.1		375.0
	$	3,629.6	$	3,672.1	$	3,587.4

Contract Assets and Liabilities

Contract assets (work in process) and contract liabilities (customer advances) at March 31, 2018, December 31, 2017 and March 31, 2017 were (in millions):

	March 31, 2018		December 31, 2017		March 31, 2017
Contract asset (Work in process):
Unbilled fees and costs	$	782.9	$	546.3	$	757.6
Media, production and other costs	595.1		564.3		592.1
	$	1,378.0	$	1,110.6	$	1,349.7
Contract liability (Customer advances)	$	1,214.3	$	1,266.7	$	1,176.6