Cash, Cash Equivalents and Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2011

Cash, Cash Equivalents and Marketable Securities (Tables) [Abstract]

Cash, cash equivalents and short and long term marketable securities


				Short-Term		Long-Term
	Cash and			Marketable		Marketable
	Cash Equivalents			Securities		Securities		Total
			(In millions)
June 30, 2011
Cash	$	104		$	—	$	—	$	104
Bank deposits		812			—		—		812
Certificate of deposits		3			5		1		9
Money market funds		212			—		—		212
U.S. treasury and and agency obligations		—			256		960		1,216
Foreign government and agency obligations		—			1		5		6
Commercial paper		646			361		—		1,007
Corporate bonds		20			199		198		417
Asset-backed securities and other		—			7		10		17

	$	1,797		$	829	$	1,174	$	3,800


December 31, 2010
Cash	$	103		$	—	$	—	$	103
Bank deposits		455			—		—		455
Money market funds		641			—		—		641
U.S. treasury and and agency obligations		4			586		1,360		1,950
Commercial paper		419			363		—		782
Corporate bonds		—			86		41		127

	$	1,622		$	1,035	$	1,401	$	4,058

Gross unrealized gains and losses and fair values


			Gross		Gross
			Unrealized		Unrealized
	Cost		Gains		Losses			Fair Value
	(In millions)
June 30, 2011
U.S. treasury and and agency obligations	$	1,215	$	1	$	—		$	1,216
Corporate bonds		416		1		—			417

	$	1,631	$	2	$	—		$	1,633


December 31, 2010
U.S. treasury and and agency obligations	$	1,953	$	2	$	(5	)	$	1,950

Fair value measurements for investments aggregated by major security type


	Level 1		Level 2		Level 3		Fair Value
			(In millions)
June 30, 2011
Cash	$	104	$	—	$	—	$	104
Bank deposits		812		—		—		812
Certificate of deposits		9		—		—		9
Money market funds		212		—		—		212
U.S. treasury and and agency obligations		1,216		—		—		1,216
Foreign government and agency obligations		—		6		—		6
Commercial paper		—		1,007		—		1,007
Corporate bonds		17		400		—		417
Asset-backed securities and other		—		17		—		17

	$	2,370	$	1,430	$	—	$	3,800


December 31, 2010
Cash	$	103	$	—	$	—	$	103
Bank deposits		455		—		—		455
Money market funds		641		—		—		641
U.S. treasury and and agency obligations		1,950		—		—		1,950
Commercial paper		—		782		—		782
Corporate bonds		20		107		—		127

	$	3,169	$	889	$	—	$	4,058

- Definition

This item represents the entire disclosure related to Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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