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Marketable Securities And Cash Equivalents | 3 Months Ended
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Sep. 30, 2012
Marketable Securities And Cash Equivalents [Abstract] |
Marketable Securities And Cash Equivalents | Note 4. Marketable Securities and Cash Equivalents
|  |  |  | Unrealized |  | Unrealized |  | Fair
|  | Cost |  | Gains |  | Losses |  | Value
|  |  |  |  | (In millions) |  |  |
September 30, 2012 |  |  |  |  |  |  |  |  |  |  |  |
United States government obligations |  |  |  |  |  |  |  |  |  |  |  |
Maturity less than 1 year |  | $ | 698 |  | $ | - |  | $ | - |  | $ | 698
Maturity 1 to 5 years |  |  | 96 |  |  | 1 |  |  | - |  |  | 97
Government-sponsored enterprise obligations |  |  |  |  |  |  |  |  |  |  |  |
Maturity 1 to 5 years |  |  | 3 |  |  | - |  |  | - |  |  | 3
Corporate debt securities |  |  |  |  |  |  |  |  |  |  |  |
Maturity 1 to 5 years |  |  | 8 |  |  | - |  |  | - |  |  | 8
Other debt securities |  |  |  |  |  |  |  |  |  |  |  |
Maturity less than 1 year |  |  | 671 |  |  | - |  |  | - |  |  | 671
Maturity 1 to 5 years |  |  | 3 |  |  | - |  |  | - |  |  | 3
Equity securities |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale |  |  | 122 |  |  | - |  |  | (12) |  |  | 110
Trading |  |  | 25 |  |  | - |  |  | - |  |  | 25
|  | $ | 1,626 |  | $ | 1 |  | $ | (12) |  | $ | 1,615
|  |  |  | 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
All of the $1 2 million in unrealized losses at September 30, 2012 arose within the last 12 months and are related to the Company’s investment in two securities. The market value of the available-for-sale equity securities that have been in an unrealized loss position for less than 12 months is $108 mi llion. The Company evaluated the near-term prospects of the issuer s in relation to the severity and duration of the impairment. Based on that evaluation and the Company’s ability and intent to hold these investment s for a reasonable period of time sufficient for a forecasted recovery of fair value, th e Company does not consider these investment s to be other-than-temporarily impaired at September 30, 2012.

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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