Investments In and Advances To Affiliates (Details) (USD $)
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3 Months Ended |
12 Months Ended |
Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2010
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Sep. 30, 2010
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Jun. 30, 2010
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Mar. 31, 2010
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
$ 1,422,000,000 |
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$ 1,320,000,000 |
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$ 1,422,000,000 |
$ 1,320,000,000 |
$ 1,157,000,000 |
Valuation Allowance Deferred Tax Asset Change In Amount |
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374,000,000 |
322,000,000 |
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Other non-operating expense |
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82,000,000 |
7,000,000 |
12,000,000 |
Investments In And Advances To Affiliates Financial Information Disclosure [Abstract] |
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Revenues |
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17,128,000,000 |
15,685,000,000 |
12,974,000,000 |
Gross margin |
1,075,000,000 |
1,010,000,000 |
992,000,000 |
993,000,000 |
1,008,000,000 |
944,000,000 |
976,000,000 |
943,000,000 |
4,070,000,000 |
3,871,000,000 |
3,294,000,000 |
Net income (loss) |
445,000,000 |
175,000,000 |
427,000,000 |
483,000,000 |
(169,000,000) |
397,000,000 |
429,000,000 |
402,000,000 |
1,530,000,000 |
1,059,000,000 |
1,755,000,000 |
Current assets |
9,228,000,000 |
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9,446,000,000 |
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9,228,000,000 |
9,446,000,000 |
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Current liabilities |
8,446,000,000 |
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8,065,000,000 |
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8,446,000,000 |
8,065,000,000 |
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Noncurrent Liabilities |
27,080,000,000 |
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21,973,000,000 |
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27,080,000,000 |
21,973,000,000 |
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Noncontrolling interests |
3,783,000,000 |
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3,940,000,000 |
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3,783,000,000 |
3,940,000,000 |
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Stockholder's equity |
5,946,000,000 |
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6,473,000,000 |
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5,946,000,000 |
6,473,000,000 |
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Undistributed Earnings Of Minority Owned Affiliates Included In Retained Earnings |
136,000,000 |
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136,000,000 |
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Distributions Received From Minority Owned Affiliates |
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36,000,000 |
49,000,000 |
35,000,000 |
Basis Difference Between Carrying Amount And Investment |
145,000,000 |
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145,000,000 |
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Minority Owned Affiliates [Member]
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Investments In And Advances To Affiliates Financial Information Disclosure [Abstract] |
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Revenues |
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1,668,000,000 |
1,341,000,000 |
1,229,000,000 |
Gross margin |
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258,000,000 |
207,000,000 |
240,000,000 |
Net income (loss) |
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(5,000,000) |
100,000,000 |
110,000,000 |
Current assets |
1,182,000,000 |
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948,000,000 |
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1,182,000,000 |
948,000,000 |
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Noncurrent assets |
4,298,000,000 |
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4,131,000,000 |
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4,298,000,000 |
4,131,000,000 |
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Current liabilities |
899,000,000 |
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687,000,000 |
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899,000,000 |
687,000,000 |
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Noncurrent Liabilities |
1,720,000,000 |
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1,597,000,000 |
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1,720,000,000 |
1,597,000,000 |
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Noncontrolling interests |
(240,000,000) |
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(206,000,000) |
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(240,000,000) |
(206,000,000) |
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Stockholder's equity |
3,101,000,000 |
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3,001,000,000 |
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3,101,000,000 |
3,001,000,000 |
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Majority Owned Affiliates [Member]
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Investments In And Advances To Affiliates Financial Information Disclosure [Abstract] |
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Revenues |
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24,000,000 |
20,000,000 |
158,000,000 |
Gross margin |
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24,000,000 |
18,000,000 |
71,000,000 |
Net income (loss) |
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(5,000,000) |
7,000,000 |
(5,000,000) |
Current assets |
58,000,000 |
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114,000,000 |
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58,000,000 |
114,000,000 |
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Noncurrent assets |
519,000,000 |
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646,000,000 |
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519,000,000 |
646,000,000 |
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Current liabilities |
109,000,000 |
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144,000,000 |
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109,000,000 |
144,000,000 |
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Noncurrent Liabilities |
269,000,000 |
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242,000,000 |
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269,000,000 |
242,000,000 |
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Noncontrolling interests |
0 |
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125,000,000 |
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0 |
125,000,000 |
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Stockholder's equity |
199,000,000 |
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249,000,000 |
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199,000,000 |
249,000,000 |
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Solar Energy Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
225,000,000 |
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256,000,000 |
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225,000,000 |
256,000,000 |
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Effective Ownership % |
50.00% |
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50.00% |
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50.00% |
50.00% |
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Other Than Temporary Impairment Recognized At Investment Affiliate |
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40,000,000 |
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Other Than Temporary Impairment Recognized At Investment Affiliate Investor Impact |
20,000,000 |
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20,000,000 |
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Solar Power Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
91,000,000 |
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8,000,000 |
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91,000,000 |
8,000,000 |
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Effective Ownership % |
50.00% |
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50.00% |
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50.00% |
50.00% |
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AES Solar Power PR LLC [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
8,000,000 |
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0 |
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8,000,000 |
0 |
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Effective Ownership % |
50.00% |
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0.00% |
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50.00% |
0.00% |
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Generation Capacity (MW) |
24 |
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24 |
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Barry Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
0 |
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0 |
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0 |
0 |
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Effective Ownership % |
100.00% |
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100.00% |
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100.00% |
100.00% |
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Long Term Liabilities Associated With Debt Agreement Resulting In Loss Of Control |
52,000,000 |
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53,000,000 |
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52,000,000 |
53,000,000 |
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CEMIG [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
14,000,000 |
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22,000,000 |
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14,000,000 |
22,000,000 |
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Effective Ownership % |
72.00% |
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72.00% |
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72.00% |
72.00% |
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Chigen Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
30,000,000 |
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146,000,000 |
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30,000,000 |
146,000,000 |
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Effective Ownership % |
25.00% |
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25.00% |
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25.00% |
25.00% |
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Other non-operating expense |
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74,000,000 |
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China Wind Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
75,000,000 |
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69,000,000 |
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75,000,000 |
69,000,000 |
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Effective Ownership % |
49.00% |
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49.00% |
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49.00% |
49.00% |
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Elsta Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
197,000,000 |
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202,000,000 |
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197,000,000 |
202,000,000 |
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Effective Ownership % |
50.00% |
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50.00% |
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50.00% |
50.00% |
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Guacolda Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
186,000,000 |
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149,000,000 |
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186,000,000 |
149,000,000 |
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Effective Ownership % |
35.00% |
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35.00% |
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35.00% |
35.00% |
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Ictas Energy Group Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
161,000,000 |
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151,000,000 |
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161,000,000 |
151,000,000 |
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Effective Ownership % |
51.00% |
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51.00% |
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51.00% |
51.00% |
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Innovent Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
32,000,000 |
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31,000,000 |
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32,000,000 |
31,000,000 |
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Effective Ownership % |
40.00% |
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40.00% |
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40.00% |
40.00% |
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JHRH Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
59,000,000 |
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39,000,000 |
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59,000,000 |
39,000,000 |
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Effective Ownership % |
49.00% |
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35.00% |
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49.00% |
35.00% |
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Investment In Joint Venture |
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15,000,000 |
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Investment Affiliate Incremental Ownership Percentage |
14.00% |
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14.00% |
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OPGC Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
203,000,000 |
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224,000,000 |
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203,000,000 |
224,000,000 |
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Effective Ownership % |
49.00% |
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49.00% |
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49.00% |
49.00% |
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Trinidad Generation Unlimited Affiliate [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
19,000,000 |
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20,000,000 |
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19,000,000 |
20,000,000 |
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Effective Ownership % |
10.00% |
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10.00% |
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10.00% |
10.00% |
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Entek [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
121,000,000 |
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0 |
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121,000,000 |
0 |
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Effective Ownership % |
50.00% |
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0.00% |
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50.00% |
0.00% |
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Generation Capacity (MW) |
312 |
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312 |
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Investment In Joint Venture |
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13,000,000 |
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Business Acquisition Cost Of Acquired Entity Cash Paid During Period |
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136,000,000 |
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149,000,000 |
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SEB [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Release Of Affiliate Loan Amount |
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1,400,000,000 |
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Payment Received From Counterparty Settlement Amount |
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25,000,000 |
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Gain Recognized On Consummation Of Share Purchase Agreement |
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115,000,000 |
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Net Tax Expense Not Recorded As Equity Earnings Amount |
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70,000,000 |
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Other Affiliates [Member]
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Investments In And Advances To Affiliates General Disclosure [Abstract] |
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Investments in and advances to affiliates |
$ 1,000,000 |
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$ 3,000,000 |
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$ 1,000,000 |
$ 3,000,000 |
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