Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2010

Fair Value Measurements

Fair Value, Assets and Liabilities Measured on Recurring Basis

	Fair Value
(Millions)	at Dec. 31,		Fair Value Measurements Using Inputs Considered as
Description	2010		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
U.S. government agency securities	$	309	$	—	$	309	$	—
Foreign government agency securities	55		—		55		—
Corporate debt securities	472		—		472		—
Commercial paper	55		—		55		—
Asset-backed securities:
Automobile loan related	397		—		397		—
Credit card related	149		—		149		—
Equipment lease related	38		—		38		—
Other	8		—		8		—
U.S. treasury securities	99		99		—
U.S. municipal securities	23		—		23		—
Auction rate securities	7		—		—		7
Other securities	29		—		29		—
Investments	21		21		—		—
Derivative instruments — assets:
Foreign currency forward/option contracts	38		36		2		—
Interest rate swap contracts	39		—		39		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts	82		82		—		—
Commodity price swap contracts	5		5		—		—

(Millions)	Fair Value at Dec. 31,		Fair Value Measurements Using Inputs Considered as
Description	2009		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
U.S. government agency securities	$	491	$	—	$	491	$	—
Corporate debt securities	266		—		266		—
Asset-backed securities:
Automobile loan related	515		—		515		—
Credit card related	107		—		107		—
Equipment lease related	70		—		70		—
Other	13		—		13		—
U.S. treasury securities	94		94		—		—
Auction rate securities	5		—		—		5
Other securities	8		—		8		—
Investments	11		11		—		—
Derivative instruments — assets:
Foreign currency forward/option contracts	23		22		1		—
Commodity price swap contracts	2		2		—		—
Interest rate swap contracts	54		—		54		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts	93		93		—		—
Commodity price swap contracts	1		1		—		—

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

(Millions) Marketable securities — auction rate securities only	2010		2009			2008
Beginning balance	$	5	$	1		$	16
Total gains or losses:
Included in earnings	—		—			(3		)
Included in other comprehensive income	2		6			(12		)
Purchases, issuances, and settlements	—		(2		)	—
Transfers in and/or out of Level 3	—		—			—
Ending balance (December 31)	7		5			1
Additional losses included in earnings due to reclassifications from other comprehensive income for:
Securities sold during the period ended December 31	—		(2		)	—
Securities still held at December 31	—		—			(6		)

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis

Year ended December 31, 2009			Fair Value Measurements Using
(Millions)			Quoted Prices in		Significant
Description	Fair value		Active Markets for Identical Assets (Level 1)		Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Gains (Losses)
Long-lived assets held and used	$	41	$	—	$	—	$	41	$	(32	)

Fair Value, of Financial Instruments by Balance Sheet Grouping

	December 31, 2010				December 31, 2009
(Millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, excluding current portion	$	4,183	$	4,466	$	5,097	$	5,355