Revenue (Tables)

9 Months Ended

Sep. 30, 2018

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018		2018 Excluding Impact of Adoption of ASC 606		2017		2018		2018 Excluding Impact of Adoption of ASC 606		2017
Americas:
North America	$	2,095.5	$	2,118.8	$	2,107.5	$	6,178.6	$	6,286.1	$	6,422.5
Latin America	102.0		101.6		117.7		325.6		325.0		345.5
EMEA:
Europe	1,015.2		1,010.5		1,017.7		3,227.9		3,231.3		2,917.8
Middle East and Africa	63.7		63.7		65.4		207.2		207.2		219.8
Asia Pacific	437.9		436.8		411.2		1,264.2		1,262.4		1,191.5
	$	3,714.3	$	3,731.4	$	3,719.5	$	11,203.5	$	11,312.0	$	11,097.1

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

	Three Months Ended September 30						Nine Months Ended September 30
	2018		2018 Excluding Impact of Adoption of ASC 606		2017		2018		2018 Excluding Impact of Adoption of ASC 606		2017
Advertising	$	1,992.1	$	1,988.1	$	1,952.9	$	5,961.0	$	5,970.8	$	5,909.0
CRM Consumer Experience	637.7		658.7		634.2		1,932.7		2,031.1		1,902.6
CRM Execution & Support	465.6		465.6		541.0		1,472.8		1,472.7		1,547.7
Public Relations	356.0		356.1		353.4		1,065.0		1,065.3		1,038.8
Healthcare	262.9		262.9		238.0		772.0		772.1		699.0
	$	3,714.3	$	3,731.4	$	3,719.5	$	11,203.5	$	11,312.0	$	11,097.1

Contract Assets and Liabilities

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

	September 30, 2018		December 31, 2017		September 30, 2017
Contract assets (Work in process):
Unbilled fees and costs	$	710.9	$	546.3	$	799.9
Media, production and other costs	648.3		564.3		658.2
	$	1,359.2	$	1,110.6	$	1,458.1
Contract liabilities (Customer advances)	$	1,142.5	$	1,266.7	$	1,132.9