Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
OPERATING ACTIVITIES:
Net income (loss)	$ (680)	$ 1,085
Adjustments to net income (loss):
Depreciation and amortization	1,038	947
(Gain) loss from sale of investments and impairment expense	1,802	321
(Gain) loss on disposal and impairment write-down - discontinued operations	(130)	1
Deferred income tax expense	101	(67)
Contingencies	51	36
(Gain) loss on the extinguishment of debt	0	52
Other	10	65
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	(191)	(185)
(Increase) decrease in inventory	(10)	(118)
(Increase) decrease in prepaid expenses and other current assets	90	67
(Increase) decrease in other assets	(379)	(167)
Increase (decrease) in accounts payable and other current liabilities	303	200
Increase (decrease) in income tax payables, net	(151)	(151)
Increase (decrease) in other liabilities	275	227
Net cash provided by operating activities	2,129	2,313
INVESTING ACTIVITIES:
Capital expenditures	(1,581)	(1,832)
Acquisitions - net of cash acquired	(18)	(158)
Proceeds from the sale of businesses, net of cash sold	432	47
Proceeds from the sale of assets	4	89
Sale of short-term investments	5,116	4,191
Purchase of short-term investments	(4,764)	(3,632)
(Increase) decrease in restricted cash	11	(164)
(Increase) decrease in debt service reserves and other assets	24	(379)
Affiliate advances and equity investments	1	(91)
Proceeds from performance bonds	0	199
Proceeds from government grants for asset construction	120	7
Other investing	(21)	(11)
Net cash used in investing activities	(676)	(1,734)
FINANCING ACTIVITIES:
(Repayments) borrowings under the revolving credit facilities, net	(322)	126
Issuance of recourse debt	0	2,050
Issuance of non-recourse debt	822	1,516
Repayments of recourse debt	(8)	(474)
Repayments of non-recourse debt	(759)	(1,489)
Payments for financing fees	(24)	(153)
Distributions to noncontrolling interests	(741)	(990)
Contributions from noncontrolling interests	12	6
Financed capital expenditures	(30)	(13)
Purchase of treasury stock	(301)	(225)
Other financing	8	(7)
Net cash (used in) provided by financing activities	(1,343)	347
Effect of exchange rate changes on cash	9	(79)
Decrease in cash of discontinued and held for sale businesses	120	1
Total increase in cash and cash equivalents	239	848
Cash and cash equivalents, beginning	1,704	2,522
Cash and cash equivalents, ending	1,943	3,370
SUPPLEMENTAL DISCLOSURES:
Cash payments for interest, net of amounts capitalized	1,024	982
Cash payments for income taxes, net of refunds	$ 580	$ 647