Goodwill (Tables)

12 Months Ended

Dec. 31, 2014

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 years ended December 31, are as follows:

(in thousands)	Retail			National Programs			Wholesale Brokerage			Service			Total
Balance as of January 1, 2013	$	876,219		$	439,180		$	288,054		$	108,061		$	1,711,514
Goodwill of acquired businesses		257,196			27,964			(812	)		12,469			296,817
Goodwill disposed of relating to sales of businesses		(2,158	)		—			—			—			(2,158	)
Balance as of December 31, 2013		1,131,257			467,144			287,242			120,530			2,006,173
Goodwill of acquired businesses		86,454			420,063			7,673			(239	)		513,951
Goodwill disposed of relating to sales of businesses		(3,696	)		(9,564	)		(46,253	)		—			(59,513	)
Balance as of December 31, 2014	$	1,214,015		$	877,643		$	248,662		$	120,291		$	2,460,611