Marketable Securities And Cash Equivalents (Tables)

6 Months Ended

Dec. 31, 2012

Marketable Securities And Cash Equivalents [Abstract]

Investments In Debt and Equity Securities

			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
			(In millions)
December 31, 2012
United States government obligations
Maturity less than 1 year	$	583	$	-	$	-	$	583
Maturity 1 to 5 years		93		-		-		93
Government-sponsored enterprise obligations
Maturity 1 to 5 years		2		-		-		2
Corporate debt securities
Maturity 1 to 5 years		15		-		-		15
Other debt securities
Maturity less than 1 year		1,038		-		-		1,038
Maturity 1 to 5 years		3		-		-		3
Equity securities
Available-for-sale		606		3		(5)		604
	$	2,340	$	3	$	(5)	$	2,338
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
			(In millions)
June 30, 2012
United States government obligations
Maturity less than 1 year	$	562	$	-	$	-	$	562
Maturity 1 to 5 years		87		1		-		88
Corporate debt securities
Maturity 1 to 5 years		24		-		-		24
Other debt securities
Maturity less than 1 year		385		-		-		385
Maturity 1 to 5 years		4		-		-		4
Equity securities
Available-for-sale		124		2		(4)		122
Trading		24		-		-		24
	$	1,210	$	3	$	(4)	$	1,209
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
			(In millions)
June 30, 2011
United States government obligations
Maturity less than 1 year	$	753	$	-	$	-	$	753
Maturity 1 to 5 years		72		1		-		73
Government-sponsored enterprise obligations
Maturity less than 1 year		20		-		-		20
Maturity 1 to 5 years		54		-		-		54
Maturity 5 to 10 years		5		-		-		5
Maturity greater than 10 years		218		8		-		226
Corporate debt securities
Maturity less than 1 year		1		-		-		1
Maturity 1 to 5 years		35		1		-		36
Other debt securities
Maturity less than 1 year		215		-		-		215
Maturity 1 to 5 years		3		-		-		3
Maturity 5 to 10 years		7		-		-		7
Equity Securities
Avaliable-for-sale		159		83		(4)		238
Trading		24		-		-		24
	$	1,566	$	93	$	(4)	$	1,655