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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (CONSOLIDATED) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowances for losses and discounts on receivables
      
Reserves deducted from assets in the balance sheets:      
Balance at beginning of period $ 41 $ 38 $ 40
Additions      
Charged to costs and expenses/charged to income 11 17 8
Other/Charged to other comprehensive income (5) (5) (6)
Deductions (8) (9) (4)
Balance at end of period 39 41 38
Valuation allowance on net deferred tax assets
      
Reserves deducted from assets in the balance sheets:      
Balance at beginning of period 1,171 1,176 1,077
Additions      
Charged to costs and expenses/charged to income 37 (7) 15
Other/Charged to other comprehensive income (187) (10) 89
Foreign currency translation (7) 3 (1)
Other (24) 9 (4)
Balance at end of period $ 990 $ 1,171 $ 1,176