Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Assets and Liabilities Measured at Fair Value on a Recurring Basis

	At December 31, 2012								At December 31, 2011
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Marketable securities	$	266	$	266	$	—	$	—	$	249	$	249	$	—	$	—
Derivatives	86		21		65		—		208		104		104		—
Total Assets at Fair Value	$	352	$	287	$	65	$	—	$	457	$	353	$	104	$	—
Derivatives	149		148		1		—		102		101		1		—
Total Liabilities at Fair Value	$	149	$	148	$	1	$	—	$	102	$	101	$	1	$	—

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

	At December 31										At December 31
									Before-Tax Loss										Before-Tax Loss
	Total		Level 1		Level 2		Level 3		Year 2012		Total		Level 1		Level 2		Level 3		Year 2011
Properties, plant and    equipment, net (held and used)	$	84	$	—	$	—	$	84	$	213	$	67	$	—	$	—	$	67	$	81
Properties, plant and equipment, net (held for sale)	16		—		—		16		17		167		—		167		—		54
Investments and advances	—		—		—		—		15		—		—		—		—		108
Total Nonrecurring Assets    at Fair Value	$	100	$	—	$	—	$	100	$	245	$	234	$	—	$	167	$	67	$	243