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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (CONSOLIDATED) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Allowances for losses and discounts on receivables
      
Reserves deducted from assets in the balance sheets:      
Balance at beginning of period $ 40 $ 37 $ 40
Additions      
Charged to costs and expenses/charged to income 8   2
Other/Charged to other comprehensive income (6) 5 (4)
Deductions (4) (2) (1)
Balance at end of period 38 40 37
Valuation allowance on net deferred tax assets
      
Reserves deducted from assets in the balance sheets:      
Balance at beginning of period 1,077 1,095 1,047
Additions      
Charged to costs and expenses/charged to income 15 11 75
Other/Charged to other comprehensive income 89 (47) (46)
Foreign currency translation (1) (5) 13
Other (4) 23 6
Balance at end of period $ 1,176 $ 1,077 $ 1,095