Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]

Available-For-Sale Securities

	June 30, 2012		December 31, 2011
	(In millions)
Fair Value
Classified as cash equivalents:
Money market funds	$	294	$	738
Commercial paper	350		1
U.S. Treasury and U.S. Agency Notes	250		—
Total classified as cash equivalents	$	894	$	739
Classified as current marketable securities:
Commercial paper	$	406	$	698
U.S. Treasury and U.S. Agency Notes	50		—
Time deposits	75		160
Auction rate securities	32		38
Marketable equity securities	1		—
Total classified as current marketable securities	$	564	$	896
Classified as long-term marketable securities:
Money market funds	$	1	$	9
Corporate bonds	179		140
Total classified as long-term marketable securities	$	180	$	149
Classified as other assets:
Money market funds	$	10	$	10
Total classified as other assets	$	10	$	10

Schedule Of Financial Instruments Measured And Recorded At Fair Value On Recurring Basis

				Fair value measurement at reporting dates using
	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other   Observable   Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(In millions)
June 30, 2012
Assets
Classified as cash equivalents:
Money market funds	$	294		$	294	$	—		$	—
Commercial paper	350			—		350			—
U.S. Treasury and U.S. Agency Notes	250			—		250			—
Total classified as cash equivalents	$	894		$	294	$	600		$	—
Classified as current marketable securities:
Commercial paper	$	406		$	—	$	406		$	—
U.S. Treasury and U.S. Agency Notes	50			—		50			—
Time deposits	75			—		75			—
Auction rate securities	32			—		—			32
Marketable equity securities	1			1		—			—
Total classified as current marketable securities	$	564		$	1	$	531		$	32
Classified as long-term marketable securities:
Money market funds	$	1		$	1	$	—		$	—
Corporate bonds	179			—		179			—
Total classified as long-term marketable securities	$	180		$	1	$	179		$	—
Classified as other assets:
Money market funds	$	10		$	10	$	—		$	—
Total classified as other assets	$	10		$	10	$	—		$	—
Total assets measured at fair value	$	1,648		$	306	$	1,310		$	32
Liabilities
Classified as accrued liabilities - Foreign currency derivative contracts	$	(1	)	$	—	$	(1	)	$	—
Total liabilities measured at fair value	$	(1	)	$	—	$	(1	)	$	—
December 31, 2011
Assets
Classified as cash equivalents:
Money market funds	$	738		$	738	$	—		$	—
Commercial paper	1			—		1			—
Total classified as cash equivalents	$	739		$	738	$	1		$	—
Classified as current marketable securities:
Commercial paper	$	698		$	—	$	698		$	—
Time deposits	160			—		160			—
Auction rate securities	38			—		—			38
Total classified as current marketable securities	$	896		$	—	$	858		$	38

Classified as long-term marketable securities:
Money market funds	$	9		$	9	$	—		$	—
Corporate bonds	140			—		140			—
Total classified as long-term marketable securities	$	149		$	9	$	140		$	—
Classified as other assets:
Money market funds	$	10		$	10	$	—		$	—
Total classified as other assets	$	10		$	10	$	—		$	—
Total assets measured at fair value	$	1,794		$	757	$	999		$	38
Liabilities
Classified as accrued liabilities - Foreign currency derivative contracts	$	(2	)	$	—	$	(2	)	$	—
Total liabilities measured at fair value	$	(2	)	$	—	$	(2	)	$	—

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Schedule Of Significant Inputs And Assumptions Used To Determine Fair Value Of Available-For-Sale Securities

	Quarter Ended
	June 30, 2012		December 31, 2011
Discount rate for periodic interest payments	1.07	%	1.13	%
Discount rate for principal repayments	1.66	%	1.93	%
Liquidity discount	0.90	%	0.90	%
Credit discount	2.00	%	2.00	%
Estimated period (years)	17		17

Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments Not Recorded At Fair Value

	June 30, 2012				December 31, 2011
	Carrying amount		Estimated Fair Value		Carrying amount		Estimated Fair Value
	(In millions)
Short-term debt (excluding capital leases)	$	485	$	487	$	485	$	490
Long-term debt (excluding capital leases)	$	1,512	$	1,689	$	1,505	$	1,619