SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2011



Col. A	Col. B		Col. C					Col. D				Col. E
			Additions
	Balance at		Charged to		Charged to			Other				Balance at
	Beginning of		Costs and		Other			Add				End of
	Period		Expense		Accounts			(Deduct)				Period
Reserves and allowances deducted
from asset accounts:
Materials and supplies inventory allowances
2011	$	26	$	4	$	—		$	(4	)	^a	$	26
2010	21		11		—			(6		)	^a	26
2009	22		4		—			(5		)	^a	21
Valuation allowance for
deferred tax assets
2011	$	2,226	$	146	$	21		$	—			$	2,393
2010	2,157		55		14			—				2,226
2009	1,763		366		28			—				2,157
Reserves for non-income taxes:
2011	$	73	$	12	$	(2	)	$	(10	)	^b	$	73
2010	47		29		—			(3		)	^b	73
2009	32		15		3			(3		)	^b	47


a.	Primarily represents write-offs of obsolete materials and supplies inventories.


b.	Represents amounts paid or adjustments to reserves based on revised estimates.