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Marketable Securities And Cash Equivalents | 9 Months Ended
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Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities And Cash Equivalents | Marketable Securities and Cash Equivalents
| Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
| (In millions)
September 30, 2013 |  |  |  |  |  |  |
United States government obligations |  |  |  |  |  |  |
Maturity less than 1 year | $ | 465 |  |  | $ | — |  |  | $ | — |  |  | $ | 465 |
Maturity 1 to 5 years | 127 |  |  | — |  |  | — |  |  | 127 |
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 | 2,440 |  |  | — |  |  | — |  |  | 2,440 |
Maturity 1 to 5 years | 3 |  |  | — |  |  | — |  |  | 3 |
Equity securities |  |  |  |  |  |  |  |  |  |
Available-for-sale | 538 |  |  | 2 |  |  | (2 | ) |  | 538 |
| $ | 3,590 |  |  | $ | 2 |  |  | $ | (2 | ) |  | $ | 3,590 |
| Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair 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 |
All of the $2 million in unrealized losses at September 30, 2013 arose within the last 12 months and are related to the Company’s investment in one available-for-sale equity security with a fair value of $5 million. The Company evaluated the near-term prospects of the issuer in relation to the severity and duration of the impairment. Based on that evaluation and the Company’s ability and intent to hold this investment for a reasonable period of time sufficient for a forecasted recovery of fair value, the Company does not consider this investment to be other-than-temporarily impaired at September 30, 2013. In September 2013, the Company recorded an other-than-temporary impairment charge of $11 million related to its available-for-sale investment in one equity security based on the Company's assessment of underlying market conditions. The impairment is recorded in asset impairment, exit, and restructuring costs in the consolidated statements of earnings.

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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 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 2: 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 3: 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 Reference 4: 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 5: 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 6: 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 + Details
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