Goodwill (Tables)

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill by Operating Segment

The changes in the carrying value of goodwill by reportable segment for the nine months ended September 30, 2015 are as follows:

(in thousands)	Retail		National Programs			Wholesale Brokerage		Services		Total
Balance as of January 1, 2015	$	1,231,869	$	886,095		$	222,356	$	120,291	$	2,460,611
Goodwill of acquired businesses	78,018		18,009			4,605		—		100,632
Goodwill disposed of relating to sales of businesses	—		(2,238		)	—		—		(2,238		)
Balance as of September 30, 2015	$	1,309,887	$	901,866		$	226,961	$	120,291	$	2,559,005