Acquisitions, Dispositions and Goodwill (Tables)

9 Months Ended

Sep. 30, 2013

Goodwill [Abstract]

Goodwill balances by reportable segments

	U.S. Property		Professional		Accident		U.S. Surety
	& Casualty		Liability		& Health		& Credit		International		Total
Balance at beginning of year	$	223,000	$	314,089	$	144,113	$	79,700	$	124,958	$	885,860
Earnout and other		0		9,010		0		0		(19)		8,991
Balance at September 30, 2013	$	223,000	$	323,099	$	144,113	$	79,700	$	124,939	$	894,851