Fair Value Measurements Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following tables present assets and liabilities accounted for at fair value on a recurring basis as of September 30, 2013 and December 31, 2012 by fair value hierarchy level.

	September 30, 2013
(In millions)	Level 1		Level 2		Level 3		Collateral		Total
Derivative instruments, assets
Commodity	$	—	$	5	$	—	$	—	$	5
Interest rate	—		11		—		—		11
Foreign currency	—		1		—		—		1
Derivative instruments, assets	$	—	$	17	$	—	$	—	$	17
Derivative instruments, liabilities
Commodity	$	—	$	14	$	—	$	—	$	14
Foreign currency	—		14		—		—		14
Derivative instruments, liabilities	$	—	$	28	$	—	$	—	$	28

	December 31, 2012
(In millions)	Level 1		Level 2		Level 3		Collateral		Total
Derivative instruments, assets
Commodity	$	—	$	52	$	—	$	1	$	53
Interest rate	—		21		—		—		21
Foreign currency	—		18		—		—		18
Derivative instruments, assets	$	—	$	91	$	—	$	1	$	92

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block]

The following table shows the values of assets, by major category, measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition.

	Three Months Ended September 30,
	2013				2012
(In millions)	Fair Value		Impairment		Fair Value		Impairment
Long-lived assets held for use	$	5	$	11	$	2	$	8

	Nine Months Ended September 30,
	2013				2012
(In millions)	Fair Value		Impairment		Fair Value		Impairment
Long-lived assets held for use	$	5	$	49	$	77	$	271

Fair Value, by Balance Sheet Grouping [Table Text Block]

The following table summarizes financial instruments, excluding receivables, commercial paper, payables and derivative financial instruments, and their reported fair value by individual balance sheet line item at September 30, 2013 and December 31, 2012.

	September 30, 2013				December 31, 2012
	Fair		Carrying		Fair		Carrying
(In millions)	Value		Amount		Value		Amount
Financial assets
Other noncurrent assets	$	168	$	165	$	189	$	186
Total financial assets	168		165		189		186
Financial liabilities
Other current liabilities	13		13		13		13
Long-term debt, including current portion(a)	6,941		6,461		7,610		6,642
Deferred credits and other liabilities	164		161		94		94
Total financial liabilities	$	7,118	$	6,635	$	7,717	$	6,749

^(a)      Excludes capital leases.