Segment Information (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Summarized financial information concerning our reportable segments for the three and six months ended June 30, 2015 and 2014 is shown in the following table.

	Three months ended June 30,						Six months ended June 30,
	2015			2014			2015			2014
Revenue:
IAN	$	1,526.7		$	1,496.0		$	2,876.6		$	2,811.7
CMG	349.4			355.4			675.5			677.2
Total	$	1,876.1		$	1,851.4		$	3,552.1		$	3,488.9
Segment operating income (loss):
IAN	$	205.0		$	184.0		$	236.6		$	195.5
CMG	41.3			41.3			61.0			58.8
Corporate and other	(30.5		)	(29.5		)	(74.0		)	(70.2		)
Total	$	215.8		$	195.8		$	223.6		$	184.1
Interest expense	(20.3		)	(22.6		)	(41.2		)	(42.8		)
Interest income	5.0			6.6			12.2			12.8
Other income (expense), net	0.5			(11.2		)	0.8			(9.5		)
Income before income taxes	$	201.0		$	168.6		$	195.4		$	144.6
Depreciation and amortization of property and equipment and intangible assets:
IAN	$	30.2		$	30.2		$	59.6		$	61.7
CMG	4.4			4.6			9.0			8.8
Corporate and other	4.9			5.4			9.6			10.2
Total	$	39.5		$	40.2		$	78.2		$	80.7
Capital expenditures:
IAN	$	20.4		$	17.2		$	32.5		$	31.1
CMG	2.3			3.1			3.4			5.6
Corporate and other	6.9			11.8			13.9			22.0
Total	$	29.6		$	32.1		$	49.8		$	58.7
	June 30, 2015			December 31, 2014
Total assets:
IAN	$	10,156.4		$	11,111.2
CMG	1,275.2			1,316.5
Corporate and other	67.7			319.5
Total	$	11,499.3		$	12,747.2