Segment Information (Tables)

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Summarized financial information concerning our reportable segments is shown in the following table.

	Three months ended June 30,						Six months ended June 30,
	2014			2013			2014			2013
Revenue:
IAN	$	1,496.0		$	1,435.7		$	2,811.7		$	2,676.8
CMG	355.4			320.5			677.2			622.4
Total	$	1,851.4		$	1,756.2		$	3,488.9		$	3,299.2
Segment operating income (loss):
IAN	$	184.0		$	169.2		$	195.5		$	146.6
CMG	41.3			34.6			58.8			48.6
Corporate and other	(29.5		)	(29.0		)	(70.2		)	(62.8		)
Total	195.8			174.8			184.1			132.4
Interest expense	(22.6		)	(37.5		)	(42.8		)	(74.3		)
Interest income	6.6			5.8			12.8			12.2
Other (expense) income, net	(11.2		)	4.8			(9.5		)	6.6
Income before income taxes	$	168.6		$	147.9		$	144.6		$	76.9
Depreciation and amortization of fixed assets and intangible assets:
IAN	$	30.2		$	31.6		$	61.7		$	62.5
CMG	4.6			3.9			8.8			7.7
Corporate and other	5.4			3.7			10.2			7.2
Total	$	40.2		$	39.2		$	80.7		$	77.4
Capital expenditures:
IAN	$	17.2		$	13.5		$	31.1		$	23.5
CMG	3.1			3.1			5.6			4.1
Corporate and other	11.8			12.4			22.0			19.2
Total	$	32.1		$	29.0		$	58.7		$	46.8
	June 30, 2014			December 31, 2013
Total assets:
IAN	$	11,175.2		$	11,425.1
CMG	1,326.2			1,203.8
Corporate and other	(161.7		)	276.1
Total	$	12,339.7		$	12,905.0