Segment and Geographic Information (Details) (USD $) In Millions, unless otherwise specified
|
12 Months Ended |
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
Revenue |
|
|
|
Total Revenue |
$ 18,291 |
$ 16,717 |
$ 13,850 |
Intersegment |
(1,163) |
(1,032) |
(876) |
Revenues |
17,128 |
15,685 |
12,974 |
Reconciliation To Income From Continuing Operations Before Taxes |
|
|
|
Depreciation and amortization |
(1,176) |
(1,034) |
(884) |
Interest expense |
(1,553) |
(1,451) |
(1,406) |
Interest income |
400 |
408 |
344 |
Other expense |
(154) |
(234) |
(104) |
Other income |
149 |
100 |
458 |
Gain on sale of investments |
8 |
0 |
132 |
Goodwill impairment |
(17) |
(21) |
(122) |
Asset impairment expense |
(225) |
(389) |
(20) |
Foreign Currency Transaction Gains (Losses) |
(38) |
(33) |
35 |
Other non-operating expense |
(82) |
(7) |
(12) |
Income from continuing operations before taxes and equity in earnings of affiliates |
2,167 |
1,853 |
2,260 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
45,333 |
40,511 |
39,535 |
Depreciation and Amortization |
1,262 |
1,178 |
1,049 |
Capital Expenditures |
2,461 |
2,333 |
2,538 |
Investment in and advances to subsidiaries and affiliates |
1,422 |
1,320 |
1,157 |
Equity in Earnings (Loss) |
(2) |
183 |
91 |
Property, plant and equipment, net |
25,122 |
22,793 |
|
United States [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
2,110 |
1,952 |
1,851 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
7,829 |
5,379 |
|
Brazil [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
6,640 |
6,355 |
5,292 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
5,896 |
6,263 |
|
Chile [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
1,608 |
1,355 |
1,239 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
2,781 |
2,560 |
|
Argentina [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
979 |
771 |
571 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
279 |
270 |
|
El Salvador [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
752 |
648 |
619 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
268 |
261 |
|
Dominican Republic [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
674 |
535 |
429 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
662 |
625 |
|
Philippines [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
480 |
501 |
250 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
766 |
784 |
|
Cameroon [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
386 |
422 |
370 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
901 |
823 |
|
Spain [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
258 |
411 |
0 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
0 |
0 |
|
Mexico [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
404 |
409 |
329 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
774 |
786 |
|
Colombia [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
365 |
393 |
347 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
384 |
387 |
|
United Kingdom [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
587 |
364 |
228 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
523 |
507 |
|
Ukraine [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
418 |
356 |
286 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
94 |
86 |
|
Hungary [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
204 |
252 |
259 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
6 |
73 |
|
Puerto Rico [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
298 |
253 |
267 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
581 |
596 |
|
Panama [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
189 |
194 |
168 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
1,040 |
921 |
|
Kazakhstan [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
145 |
138 |
123 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
86 |
63 |
|
Jordan [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
124 |
120 |
104 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
216 |
224 |
|
Sri Lanka [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
140 |
100 |
109 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
22 |
69 |
|
Bulgaria [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
251 |
44 |
0 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
1,619 |
1,825 |
|
Qatar [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
0 |
0 |
0 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
0 |
0 |
|
Pakistan [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
0 |
0 |
0 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
0 |
0 |
|
Oman [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
0 |
0 |
0 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
0 |
0 |
|
Other Non US [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
116 |
112 |
133 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
395 |
291 |
|
Total Non US [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
15,018 |
13,733 |
11,123 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
17,293 |
17,414 |
|
Generation Latin America Other [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
3,854 |
3,282 |
2,806 |
Intersegment |
(39) |
(34) |
(16) |
Revenues |
3,815 |
3,248 |
2,790 |
Adjusted Gross Margin |
|
|
|
Adjusted Gross Margin |
1,209 |
945 |
891 |
Intersegment |
20 |
(27) |
(4) |
External Adjusted Gross Margin |
1,229 |
918 |
887 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
9,067 |
8,487 |
8,010 |
Depreciation and Amortization |
202 |
175 |
146 |
Capital Expenditures |
553 |
584 |
921 |
Investment in and advances to subsidiaries and affiliates |
188 |
150 |
129 |
Equity in Earnings (Loss) |
35 |
48 |
30 |
Generation Tiete [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Generation Capacity (MW) |
2,663 |
|
|
Revenue |
|
|
|
Total Revenue |
1,128 |
999 |
845 |
Intersegment |
(1,109) |
(983) |
(848) |
Revenues |
19 |
16 |
(3) |
Adjusted Gross Margin |
|
|
|
Adjusted Gross Margin |
876 |
754 |
637 |
Intersegment |
(1,109) |
(983) |
(848) |
External Adjusted Gross Margin |
(233) |
(229) |
(211) |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
1,645 |
1,886 |
1,792 |
Depreciation and Amortization |
59 |
40 |
37 |
Capital Expenditures |
105 |
57 |
30 |
Investment in and advances to subsidiaries and affiliates |
0 |
0 |
0 |
Equity in Earnings (Loss) |
0 |
0 |
0 |
Generation North America [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
1,325 |
1,315 |
1,249 |
Intersegment |
(4) |
0 |
0 |
Revenues |
1,321 |
1,315 |
1,249 |
Adjusted Gross Margin |
|
|
|
Adjusted Gross Margin |
439 |
448 |
453 |
Intersegment |
9 |
2 |
(3) |
External Adjusted Gross Margin |
448 |
450 |
450 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
3,625 |
3,801 |
4,199 |
Depreciation and Amortization |
118 |
131 |
135 |
Capital Expenditures |
39 |
54 |
45 |
Investment in and advances to subsidiaries and affiliates |
18 |
0 |
3 |
Equity in Earnings (Loss) |
(2) |
(2) |
(2) |
Generation Europe [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
1,550 |
1,318 |
762 |
Intersegment |
(2) |
(2) |
2 |
Revenues |
1,548 |
1,316 |
764 |
Adjusted Gross Margin |
|
|
|
Adjusted Gross Margin |
469 |
395 |
273 |
Intersegment |
8 |
3 |
4 |
External Adjusted Gross Margin |
477 |
398 |
277 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
3,276 |
3,317 |
3,147 |
Depreciation and Amortization |
136 |
114 |
53 |
Capital Expenditures |
140 |
233 |
212 |
Investment in and advances to subsidiaries and affiliates |
479 |
353 |
308 |
Equity in Earnings (Loss) |
8 |
19 |
50 |
Generation Asia [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
625 |
618 |
375 |
Intersegment |
0 |
0 |
0 |
Revenues |
625 |
618 |
375 |
Adjusted Gross Margin |
|
|
|
Adjusted Gross Margin |
176 |
255 |
111 |
Intersegment |
2 |
2 |
4 |
External Adjusted Gross Margin |
178 |
257 |
115 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
1,717 |
1,762 |
1,594 |
Depreciation and Amortization |
33 |
33 |
32 |
Capital Expenditures |
129 |
10 |
22 |
Investment in and advances to subsidiaries and affiliates |
291 |
409 |
390 |
Equity in Earnings (Loss) |
(1) |
3 |
28 |
Utilities Latin America [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
7,374 |
6,987 |
5,877 |
Intersegment |
0 |
0 |
0 |
Revenues |
7,374 |
6,987 |
5,877 |
Adjusted Gross Margin |
|
|
|
Adjusted Gross Margin |
1,321 |
1,248 |
1,060 |
Intersegment |
1,118 |
1,018 |
865 |
External Adjusted Gross Margin |
2,439 |
2,266 |
1,925 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
9,468 |
9,609 |
8,810 |
Depreciation and Amortization |
293 |
231 |
201 |
Capital Expenditures |
666 |
584 |
356 |
Investment in and advances to subsidiaries and affiliates |
0 |
0 |
0 |
Equity in Earnings (Loss) |
0 |
0 |
0 |
Utilities North America [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
1,326 |
1,145 |
1,068 |
Intersegment |
0 |
0 |
0 |
Revenues |
1,326 |
1,145 |
1,068 |
Adjusted Gross Margin |
|
|
|
Adjusted Gross Margin |
394 |
407 |
401 |
Intersegment |
1 |
2 |
2 |
External Adjusted Gross Margin |
395 |
409 |
403 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
9,384 |
3,139 |
3,035 |
Depreciation and Amortization |
178 |
161 |
157 |
Capital Expenditures |
232 |
177 |
116 |
Investment in and advances to subsidiaries and affiliates |
0 |
0 |
0 |
Equity in Earnings (Loss) |
0 |
0 |
0 |
Segment Discontinued Operations [Member]
|
|
|
|
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
1,531 |
2,587 |
3,756 |
Depreciation and Amortization |
59 |
110 |
140 |
Capital Expenditures |
91 |
105 |
119 |
Investment in and advances to subsidiaries and affiliates |
0 |
0 |
0 |
Equity in Earnings (Loss) |
0 |
0 |
0 |
Segment Discontinued Operations [Member] | United States [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
374 |
662 |
695 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
619 |
788 |
|
Segment Discontinued Operations [Member] | Brazil [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
124 |
118 |
102 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
|
151 |
|
Segment Discontinued Operations [Member] | Argentina [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
102 |
116 |
113 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
|
189 |
|
Segment Discontinued Operations [Member] | Spain [Member]
|
|
|
|
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
620 |
667 |
|
Segment Discontinued Operations [Member] | United Kingdom [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
17 |
21 |
11 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
|
20 |
|
Segment Discontinued Operations [Member] | Hungary [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
14 |
44 |
58 |
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
|
7 |
|
Segment Discontinued Operations [Member] | Qatar [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
|
129 |
163 |
Segment Discontinued Operations [Member] | Pakistan [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
|
299 |
470 |
Segment Discontinued Operations [Member] | Oman [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
|
62 |
101 |
Segment Discontinued Operations [Member] | Other Non US [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
1 |
|
|
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Property, plant and equipment, net |
2 |
18 |
|
Segment Discontinued Operations [Member] | Total Non US [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
258 |
|
|
Corporate Other And Other Eliminations [Member]
|
|
|
|
Revenue |
|
|
|
Total Revenue |
1,109 |
1,053 |
868 |
Intersegment |
(9) |
(13) |
(14) |
Revenues |
1,100 |
1,040 |
854 |
Adjusted Gross Margin |
|
|
|
Adjusted Gross Margin |
(33) |
62 |
3 |
Intersegment |
(45) |
(17) |
(10) |
External Adjusted Gross Margin |
(78) |
45 |
(7) |
Reconciliation To Income From Continuing Operations Before Taxes |
|
|
|
Goodwill impairment |
0 |
3 |
|
Segment Reporting Entity Other Disclosures [Abstract] |
|
|
|
Assets |
5,620 |
5,923 |
5,192 |
Depreciation and Amortization |
184 |
183 |
148 |
Capital Expenditures |
506 |
529 |
717 |
Investment in and advances to subsidiaries and affiliates |
446 |
408 |
327 |
Equity in Earnings (Loss) |
$ (42) |
$ 115 |
$ (15) |