XML 56 R128.htm IDEA: XBRL DOCUMENT v2.4.0.6
Schedule V. Valuation and Qualifying Accounts (Schedule of valuation and qualifying accounts) (Details) (Allowance for doubtful accounts, insurance and reinsurance receivables [Member], USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Allowance for doubtful accounts, insurance and reinsurance receivables [Member]
      
Movement in valuation allowances and reserves [Roll Forward]      
Balance at beginning of period $ 203 $ 285 $ 553
Charged to costs and expenses (23) (55) (232)
Charged to other accounts 5 [1]    [1] (1) [1]
Deductions (11) (27) (35)
Balance at end of period $ 174 $ 203 $ 285
[1] Amount includes effects of foreign currency translation.