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1148 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Detail)
(http://www.loews.com/taxonomy/role/DisclosureScheduleIIValuationAndQualifyingAccounts)
TableValuation and Qualifying Accounts Disclosure [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000060086 (http://www.sec.gov/CIK)
Valuation and Qualifying Accounts Disclosure [Line Items]Period [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
Valuation Allowances And Reserves Type [Axis]Valuation Allowances And Reserves Type [Axis]Valuation Allowances And Reserves Type [Axis]
Allowance For Doubtful Accounts [Member]Valuation Allowances And Reserves [Domain]Allowance For Doubtful Accounts [Member]Valuation Allowances And Reserves [Domain]Allowance For Doubtful Accounts [Member]Valuation Allowances And Reserves [Domain]
Balance at Beginning of Period
213,000,000  
213,000,000  
241,000,000  
241,000,000  
404,000,000  
404,000,000  
Charged to Costs and Expenses
23,000,000  
23,000,000  
1,000,000  
1,000,000  
6,000,000  
6,000,000  
Charged to Other Accounts
140,000,000  
140,000,000  
9,000,000  
9,000,000  
69,000,000  
69,000,000  
Deductions
47,000,000  
47,000,000  
38,000,000  
38,000,000  
238,000,000  
238,000,000  
Balance at End of Period
329,000,000  
 
329,000,000  
 
213,000,000  
 
213,000,000  
 
241,000,000  
 
241,000,000