SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (CONSOLIDATED) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowances for losses and discounts on receivables
Reserves deducted from assets in the balance sheets:
Balance at beginning of period	$ 38	$ 40	$ 37
Additions
Charged to costs and expenses/charged to income	17	8
Other/Charged to other comprehensive income	(5)	(6)	5
Deductions	(9)	(4)	(2)
Balance at end of period	41	38	40
Valuation allowance on net deferred tax assets
Reserves deducted from assets in the balance sheets:
Balance at beginning of period	1,176	1,077	1,095
Additions
Charged to costs and expenses/charged to income	(7)	15	11
Other/Charged to other comprehensive income	(10)	89	(47)
Foreign currency translation	3	(1)	(5)
Other	9	(4)	23
Balance at end of period	$ 1,171	$ 1,176	$ 1,077