XML 45 R32.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Investments In Marketable Securities (Tables) | 3 Months Ended
--- | ---
Sep. 30, 2012
Investments In Marketable Securities Tables [Abstract] |
Marketable Securities By Type Table |
|  |  | September 30, 2012 |  | December 31, 2011
|  |  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
|  |  | (in millions)
AVAILABLE-FOR-SALE:(1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Unsecured debentures |  | $ | - |  | $ | 440 |  | $ | - |  | $ | 440 |  | $ | - |  | $ | 665 |  | $ | - |  | $ | 665
| Certificates of deposit |  |  | - |  |  | 338 |  |  | - |  |  | 338 |  |  | - |  |  | 576 |  |  | - |  |  | 576
| Government debt securities |  |  | - |  |  | 26 |  |  | - |  |  | 26 |  |  | - |  |  | 31 |  |  | - |  |  | 31
| Subtotal |  |  | - |  |  | 804 |  |  | - |  |  | 804 |  |  | - |  |  | 1,272 |  |  | - |  |  | 1,272
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Mutual funds |  |  | - |  |  | 52 |  |  | - |  |  | 52 |  |  | - |  |  | 67 |  |  | - |  |  | 67
| Common stock |  |  | 1 |  |  | - |  |  | - |  |  | 1 |  |  | 1 |  |  | - |  |  | - |  |  | 1
| Subtotal |  |  | 1 |  |  | 52 |  |  | - |  |  | 53 |  |  | 1 |  |  | 67 |  |  | - |  |  | 68
Total available-for-sale |  |  | 1 |  |  | 856 |  |  | - |  |  | 857 |  |  | 1 |  |  | 1,339 |  |  | - |  | $ | 1,340
TRADING: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Mutual funds |  |  | 12 |  |  | - |  |  | - |  |  | 12 |  |  | 12 |  |  | - |  |  | - |  |  | 12
Total trading |  |  | 12 |  |  | - |  |  | - |  |  | 12 |  |  | 12 |  |  | - |  |  | - |  |  | 12
TOTAL |  | $ | 13 |  | $ | 856 |  | $ | - |  | $ | 869 |  | $ | 13 |  | $ | 1,339 |  | $ | - |  | $ | 1,352
Held-to-maturity securities |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  | 4
Total marketable securities |  |  |  |  |  |  |  |  |  |  | $ | 873 |  |  |  |  |  |  |  |  |  |  | $ | 1,356
Pre-Tax Gains And Losses On Available For Sale And Trading Securities |
|  |  | Three Months Ended |  | Nine Months Ended
|  |  | September 30, |  | September 30,
|  |  | 2012 |  | 2011 |  | 2012 |  | 2011
|  |  | (in millions)
Losses included in earnings that relate to trading securities |  |  |  |  |  |  |  |  |  |  |  |
| held at the reporting date |  | $ | - |  | $ | (2) |  | $ | - |  | $ | (1)
Unrealized gains (losses) on available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |
| included in other comprehensive income |  |  | (1) |  |  | (1) |  |  | (1) |  |  | (4)
Proceeds from sales of available-for-sale securities |  |  | 1,513 |  |  | 1,134 |  |  | 5,160 |  |  | 4,218
Gross realized gains on sales |  |  | - |  |  | 1 |  |  | 1 |  |  | 5

X
- Details
Name: | aes_InvestmentsInMarketableSecuritiesTablesAbstract
Namespace Prefix: | aes_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 7, 13, 16, 22 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (c)-(e) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.M) -URI http://asc.fasb.org/extlink&oid=6784337&loc=d3e87990-122713 + Details
Name: | us-gaap_GainLossOnInvestmentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_MarketableSecuritiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration