Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

Revenue in our principal geographic markets for the three and six months ended June 30, 2018 and 2017 was (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018		2018 Excluding Impact of Adoption of ASC 606		2017		2018		2018 Excluding Impact of Adoption of ASC 606		2017
Americas:
North America	$	2,097.4	$	2,144.6	$	2,175.6	$	4,083.1	$	4,167.3	$	4,314.9
Latin America	115.1		115.2		121.2		223.5		223.3		227.8
EMEA:
Europe	1,142.6		1,145.2		1,012.5		2,212.7		2,220.8		1,900.2
Middle East and Africa	70.2		70.2		75.5		143.6		143.6		154.4
Asia Pacific	434.3		433.4		405.3		826.3		825.6		780.3
	$	3,859.6	$	3,908.6	$	3,790.1	$	7,489.2	$	7,580.6	$	7,377.6

Revenue by discipline for the three and six months ended June 30, 2018 and 2017 was (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018		2018 Excluding Impact of Adoption of ASC 606		2017		2018		2018 Excluding Impact of Adoption of ASC 606		2017
Advertising	$	2,067.6	$	2,073.8	$	2,027.2	$	3,968.9	$	3,982.7	$	3,956.2
CRM Consumer Experience	660.0		704.1		654.7		1,294.9		1,372.3		1,268.3
CRM Execution & Support	498.7		497.2		517.3		1,007.2		1,007.1		1,006.6
Public Relations	362.7		362.9		350.3		709.1		709.3		685.4
Healthcare	270.6		270.6		240.6		509.1		509.2		461.1
	$	3,859.6	$	3,908.6	$	3,790.1	$	7,489.2	$	7,580.6	$	7,377.6

Contract Assets and Liabilities

Contract assets (work in process) and contract liabilities (customer advances) at June 30, 2018, December 31, 2017 and June 30, 2017 were (in millions):

	June 30, 2018		December 31, 2017		June 30, 2017
Contract assets (Work in process):
Unbilled fees and costs	$	709.2	$	546.3	$	752.7
Media, production and other costs	644.3		564.3		648.9
	$	1,353.5	$	1,110.6	$	1,401.6
Contract liabilities (Customer advances)	$	1,147.1	$	1,266.7	$	1,141.1