Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue from External Customers by Geographic Areas [Table Text Block]

	Years ended December 31,
Total revenue:	2019		2018		2017
United States	$	6,368.7	$	5,851.0	$	5,417.3
International:
United Kingdom	871.8		881.4		775.7
Continental Europe	842.9		840.2		780.6
Asia Pacific	1,102.3		1,170.8		1,106.4
Latin America	431.6		389.0		386.6
Other	604.0		582.0		581.0
Total International	3,852.6		3,863.4		3,630.3
Total Consolidated	$	10,221.3	$	9,714.4	$	9,047.6

 

	Years ended December 31,
Net revenue:	2019		2018		2017
United States	$	5,386.1	$	4,825.0	$	4,458.8
International:
United Kingdom	727.0		711.7		613.1
Continental Europe	742.4		737.5		687.8
Asia Pacific	858.3		896.8		866.9
Latin America	389.9		350.1		350.8
Other	521.4		510.5		496.1
Total International	3,239.0		3,206.6		3,014.7
Total Consolidated	$	8,625.1	$	8,031.6	$	7,473.5

 

IAN	Years ended December 31,
Total revenue:	2019		2018		2017
United States	$	4,912.5	$	4,447.0	$	4,062.3
International	3,113.9		3,109.1		2,947.3
Total IAN	$	8,026.4	$	7,556.1	$	7,009.6
Net revenue:
United States	$	4,557.5	$	4,000.4	$	3,660.6
International	2,790.7		2,767.1		2,606.1
Total IAN	$	7,348.2	$	6,767.5	$	6,266.7

 

CMG	Years ended December 31,
Total revenue:	2019		2018		2017
United States	$	1,456.2	$	1,404.0	$	1,355.0
International	738.7		754.3		683.0
Total CMG	$	2,194.9	$	2,158.3	$	2,038.0
Net revenue:
United States	$	828.6	$	824.6	$	798.2
International	448.3		439.5		408.6
Total CMG	$	1,276.9	$	1,264.1	$	1,206.8

 

Contract with Customer, Asset and Liability [Table Text Block]

Contract Balances

The following table provides information about receivables, contract assets and contract liabilities from contracts with customers.

	December 31, 2019		December 31, 2018
Accounts receivable, net of allowance of $40.2 and $42.5, respectively	$	5,209.2	$	5,126.6
Accounts receivable, billable to clients	1,934.1		1,900.6
Contract assets	63.0		67.9
Contract liabilities (deferred revenue)	585.6		533.9