Segment Information (Tables)

6 Months Ended

Jun. 30, 2012

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,
	2012			2011			2012			2011
Revenue:
IAN	$	1,423.3		$	1,471.7		$	2,667.2		$	2,707.6
CMG	292.4			269.0			555.3			507.9
Total	$	1,715.7		$	1,740.7		$	3,222.5		$	3,215.5
Segment operating income:
IAN	$	177.3		$	184.7		$	162.0		$	162.5
CMG	31.2			27.8			38.7			38.5
Corporate and other	(32.1		)	(38.5		)	(63.7		)	(72.3		)
Total	176.4			174.0			137.0			128.7
Interest expense	(32.7		)	(33.1		)	(65.3		)	(65.0		)
Interest income	6.7			9.7			14.7			18.0
Other income (expense), net	4.7			5.3			3.4			(0.8		)
Income before income taxes	$	155.1		$	155.9		$	89.8		$	80.9
Depreciation and amortization of fixed assets and intangible assets:
IAN	$	29.9		$	31.4		$	58.3		$	60.7
CMG	3.3			3.3			6.7			6.4
Corporate and other	3.6			3.0			6.4			6.2
Total	$	36.8		$	37.7		$	71.4		$	73.3
Capital expenditures:
IAN	$	19.9		$	22.8		$	32.7		$	36.8
CMG	3.6			2.9			5.6			4.2
Corporate and other	12.3			10.5			19.9			12.1
Total	$	35.8		$	36.2		$	58.2		$	53.1
	June 30, 2012			December 31, 2011
Total assets:
IAN	$	9,953.9		$	10,589.2
CMG	1,061.4			1,019.9
Corporate and other	836.3			1,267.5
Total	$	11,851.6		$	12,876.6