Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 13	$ 24	$ 15
Charged to Cost & Expense	3	0	10
Charged to Other Accounts	0	0	0
Deductions	0	11	1
Balance at End of Period	16	13	24
Deferred Tax Asset Valuation Allowance [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	410	528	478
Charged to Cost & Expense	2	0	50
Charged to Other Accounts	0	0	0
Deductions	0	118	0
Balance at End of Period	412	410	528
Inventory Excess and Obsolete Reserves [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	71	100	111
Charged to Cost & Expense	105	80	97
Charged to Other Accounts	0	0	0
Deductions	93	109	108
Balance at End of Period	83	71	100
Reserves Related to Business Restructuring [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	3	4	31
Charged to Cost & Expense	0	0	0
Charged to Other Accounts	0	0	0
Deductions	1	1	27
Balance at End of Period	$ 2	$ 3	$ 4