Loss And Loss Adjustment Expense Reserves (Tables)

12 Months Ended

Dec. 31, 2013

Activity in Loss and Loss Adjustment Expense Reserves

Activity in the loss and loss adjustment expense reserves is summarized as follows:

(millions)	2013		2012		2011
Balance at January 1	$	7,838.4	$	7,245.8	$	7,071.0
Less reinsurance recoverables on unpaid losses	862.1		785.7		704.1
Net balance at January 1	6,976.3		6,460.1		6,366.9
Incurred related to:
Current year	12,427.3		11,926.0		10,876.8
Prior years	45.1		22.0		(242.0		)
Total incurred	12,472.4		11,948.0		10,634.8
Paid related to:
Current year	8,095.0		7,895.3		7,289.3
Prior years	3,919.9		3,536.5		3,252.3
Total paid	12,014.9		11,431.8		10,541.6
Net balance at December 31	7,433.8		6,976.3		6,460.1
Plus reinsurance recoverables on unpaid losses	1,045.9		862.1		785.7
Balance at December 31	$	8,479.7	$	7,838.4	$	7,245.8