XML 118 R92.htm IDEA: XBRL DOCUMENT v2.4.0.6
Legal Proceedings - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2012
Plaintiff
Dec. 31, 2011
Dec. 31, 2010
Sep. 04, 2012
Jan. 04, 2011
Circuit Court Of Cook County
Plaintiff
Dec. 31, 2012
Court of Common Pleas, Philadelphia County
Jan. 04, 2011
Court of Common Pleas, Philadelphia County
Plaintiff
Dec. 31, 2012
Settlement Agreement
Apr. 22, 2011
Settlement Agreement
Plaintiff
Apr. 29, 2011
Settlement Agreement
Dec. 31, 2012
1999-2004
Circuit Court Of Cook County
Plaintiff
Case
Dec. 31, 2012
2009
Circuit Court Of Cook County
Case
Dec. 31, 2012
2008
Circuit Court Of Cook County
Plaintiff
Dec. 31, 2012
2007-2009
Court of Common Pleas, Philadelphia County
Plaintiff
Case
Dec. 31, 2012
Outside Chicago Firefighter Plaintiffs
1999-2004
Circuit Court Of Cook County
Plaintiff
Dec. 31, 2012
Pennsylvania Firefighter Plaintiffs
2009
Circuit Court Of Cook County
Plaintiff
Jun. 08, 2012
Chicago Firefighter Plaintiffs
Plaintiff
Nov. 30, 2011
Chicago Firefighter Plaintiffs
Plaintiff
Dec. 31, 2012
Chicago Firefighter Plaintiffs
2009
Circuit Court Of Cook County
Plaintiff
Dec. 31, 2012
Philadelphia Firefighter Plaintiffs
Court of Common Pleas, Philadelphia County
Plaintiff
Case
Dec. 31, 2012
Philadelphia Firefighter Plaintiffs
2010
Court of Common Pleas, Philadelphia County
Plaintiff
Dec. 31, 2012
Maximum
Chicago Firefighter Plaintiffs
Plaintiff
Dec. 31, 2012
Minimum
Chicago Firefighter Plaintiffs
Plaintiff
Loss Contingencies [Line Items]                                              
Number of additional cases filed by firefighters                     33 6   71         40 15      
Number of plaintiffs                 1,069   2,443     71 1,800 299 3 8   15 9 40 9
Number of cases of plaintiff's claims                         27 3                  
Plaintiff's counsel later moved to reduce the number of plaintiff                                     9        
Claims settled amount               $ 3.8                     $ 0.4        
Number of plaintiffs cases dismissed 2                                            
Damages maximum amount           0.1                                  
Damages subsequently reduced, minimum amount           0.08                                  
Number of claimants settled         308   1,125                                
Percentage of claimants agreed for settlement                 95.02% 93.00%                          
Percentage of claimants agreed for settlement as per settlement agreement                   100.00%                          
Settlement Agreement payment made                 3.6                            
Reimbursement 0.7 0.8 0.6                                        
Reimbursement received $ 0.6                                            
Holding period purchase proceed held as security       48 months