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FAIR VALUE OF FINANCIAL INVESTMENTS AND LIABILITIES (Details 2) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Income from financial investments, net and impairment charges |  |  |
Realized gains from marketable securities |  |  | $ 41,000,000
Impairment charges |  | 2,000,000 |
Income from financial investments, net | 11,000,000 | 22,000,000 | 73,000,000
Estimated market value of long-term and short-term debt | 3,700,000,000 | 4,000,000,000 |
Aggregate carrying value of long-term and short-term debt | 3,400,000,000 | 3,600,000,000 |
Private equity funds |  |  |
Income from financial investments, net and impairment charges |  |  |
Realized gains from private equity funds | 11,000,000 | 24,000,000 | 32,000,000
Impairment charges |  | $ 2,000,000 |

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- Definition The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3(a)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 325 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6485959&loc=d3e22529-158502 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 3 -Subparagraph a -Article 7 + Details
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