Goodwill (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill by Operating Segment

The changes in the carrying value of goodwill by operating segment for the three months ended March 31, 2013 are as follows:

(in thousands)	Retail			National Programs		Wholesale Brokerage			Services		Total
Balance as of January 1, 2013	$	876,219		$	439,180	$	288,054		$	108,061	$	1,711,514
Goodwill of acquired businesses		(1,564	)		172		(843	)		—		(2,235	)
Balance as of March 31, 2013	$	874,655		$	439,352	$	287,211		$	108,061	$	1,709,279