XML 61 R36.htm IDEA: XBRL DOCUMENT v2.4.0.8
Loans Receivable, net - Aging of Loans Receivable (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Troubled debt restructurings current $ 5.8 $ 7.6
Commercial Mortgage Loans [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Troubled debt restructurings 29 to 59 days delinquent $ 2.3