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Short-Term Investments | 12 Months Ended
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Dec. 31, 2011
Short-Term Investments [Abstract] |
Short-Term Investments | 10. Short-Term Investments The components of short-term investments include the following:
| December 31,
| 2011 | 2010
| (In millions)
Commercial paper | $ 1,013 | $ —
U.S. Treasuries | 201 | 145
Other | 289 | —
Total | $ 1,503 | $ 145
As of December 31, 2011, the average remaining maturity of these investments was 75 days, with a weighted average yield of 0.28 percent.

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- Definition The entire disclosure for investments, including all tables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 + Details
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