XML 147 R88.htm IDEA: XBRL DOCUMENT v2.4.0.6
Reserve of Losses and Loss Expenses (Rollforward of Reserves for Losses and Loss Expenses) (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Gross reserves for losses and loss expenses, at beginning of year $ 3,144,924,000 $ 2,830,058,000 $ 2,745,799,000
Less: reinsurance recoverable on unpaid loss and loss expenses, at beginning of year 549,490,000 [1] 313,739,000 271,610,000
Net reserves for losses and loss expenses, at beginning of year 2,595,434,000 2,516,319,000 2,474,189,000
Incurred losses and loss expense for claims occurring in the current year 1,146,591,000 1,113,733,000 1,025,707,000
Incurred losses and loss expenses for claims occurring in the prior years (25,601,000) (38,746,000) (43,589,000)
Total incurred lossesand loss expenses 1,120,990,000 1,074,987,000 982,118,000
Paid losses and loss expenses for claims occurring in current year 424,496,000 440,786,000 378,650,000
Paid losses and loss expenses for claims occurring in prior years 632,742,000 569,944,000 561,338,000
Total paid losses and loss expenses 1,057,238,000 1,010,730,000 939,988,000
Acquisition of MUSIC loss and loss expense reserves 0 14,858,000 0
Net reserves for losses and loss expenses, at end of year 2,659,186,000 2,595,434,000 2,516,319,000
Add: reinsurance recoverable on unpaid loss and loss expenses, at end of year 1,409,755,000 549,490,000 [1] 313,739,000
Gross reserves for losses and loss expenses, at end of year 4,068,941,000 3,144,924,000 2,830,058,000
Reinsurance recoverable related to the acquisition of MUSIC   43,978,000  
Increase of net loss and loss expense reserves 63,800,000 79,100,000 42,100,000
Anticipated recoveries for salvage and subrogation claims $ 62,200,000 $ 67,600,000 $ 55,000,000
[1] 1 Includes $44.0 million related to the acquisition of MUSIC at December 31, 2011.