CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Cash Flows From Operating Activities
Net income (loss)	$ (52)	$ 64
(Income) loss from discontinued operations	3	(9)
Income (loss) from continuing operations, net	(49)	55
Adjustments to reconcile income (loss) to net cash provided by operating activities:
Equity in income from unconsolidated affiliates	(12)	(37)
Distributions from unconsolidated affiliates	15	39
Depreciation and amortization	164	125
Deferred taxes and tax credits	(30)	53
Changes in operating assets and liabilities:
Decrease in margin and collateral deposits	9	12
(Increase) decrease in accounts receivables		53
Increase in inventory	(22)	(34)
(Increase) decrease in prepaid expenses and other	(12)	7
(Increase) decrease in restricted cash	(9)	43
Increase in rent payments in excess of levelized rent expense	(101)	(111)
Increase (decrease) in accounts payable and other current liabilities	1	(121)
Increase in derivative assets and liabilities	(23)	(35)
Proceeds from U.S. Treasury grants		92
Decrease in other operating-assets	8	8
Increase (decrease) in other operating-liabilities	(31)	10
Operating cash flow from continuing operations	(92)	159
Operating cash flow from discontinued operations	(3)	9
Net cash provided by (used in) operating activities	(95)	168
Cash Flows From Financing Activities
Borrowings on long-term debt	95	7
Payments on long-term debt	(28)	(23)
Borrowings on short-term debt	32
Borrowings under construction loan		65
Payments to affiliates related to stock-based awards	(4)	(2)
Excess tax benefits related to stock option exercises	1
Financing costs		(10)
Net cash provided by financing activities from continuing operations	96	37
Cash Flows From Investing Activities
Capital expenditures	(238)	(313)
Proceeds from return of capital and loan repayments and sale of assets	12	27
Investments in and loans to unconsolidated affiliates	(7)
Purchase of interest of acquired companies		(4)
Maturities of short-term investments		1
Decrease in restricted deposits	19
Investments in other assets	(29)	(5)
Net cash used in investing activities from continuing operations	(243)	(294)
Net decrease in cash and cash equivalents	(242)	(89)
Cash and cash equivalents at beginning of period	1,075	796
Cash and cash equivalents at end of period	$ 833	$ 707

Cash grants under the American Recovery and Reinvestment Act of 2009 for renewable energy projects.

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The cash flow impact of the current period expense charged against earnings on long-lived, physical assets used in the normal conduct of business and not intended for resale to allocate or recognize the cost of assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset. Examples include buildings, production equipment and customer lists, deferred financing costs, and accretion of discounted liabilities.

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The net change during the reporting period in the aggregate value of rent payments in excess of levelized rent expense under plant operating leases.

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Represents cash used by parent company to settle stock options exercised by employees of affiliates.

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Proceeds from return of capital and loan repayments (includes distributions received from unconsolidated subsidiaries that constitute a return of investment or loan repayment) and sale of assets (cash inflow from sale of other property, plant and equipment used to produce goods or deliver services, and not otherwise defined in taxonomy).

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.

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The net change between the beginning and ending balance of cash and cash equivalents.

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This element represents cash provided by (used in) the operating activities of the entity's discontinued operations during the period. This element should only be used by those entities that separately report cash flows attributable to discontinued operations. If using this element, it is an indication that the cash flows of the entity which are detailed in reconciling to cash provided by or used in operating activities reflect only cash flows attributable to continuing operations.

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The net amount of deferred income taxes and income tax credits less the tax benefit from exercise of stock options.

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This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from share-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest.

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This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items and the cumulative effect of accounting changes before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment.

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The net change during the reporting period in the aggregate amount of obligations and expenses incurred but not paid.

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- Definition

The net change during the reporting period in the assets (liabilities) created through trading commodity-based derivative instruments.

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The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

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The net change during the reporting period in money or securities placed with a broker or counterparty as security for a trading or derivative position.

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The net change during the reporting period in other operating assets not otherwise defined in the taxonomy.

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The net change during the reporting period in other operating obligations not otherwise defined in the taxonomy.

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The net change during the reporting period in the value of this group of assets within the working capital section.

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The net change during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.

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The net cash inflow (outflow) for the net change associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

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The net cash inflow (outflow) from financing activity for the period.

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The net cash inflow (outflow) from investing activity.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income.

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The net cash from (used in) the entity's continuing operations. This element specifically EXCLUDES the cash flows derived by the entity from its discontinued operations, if any. This element is only to be used when the entity reports its cash flows attributable to discontinued operations separately from the cash flow provided by or used in operating activities.

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The net cash outflow (inflow) from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from borrowings to finance the cost of construction.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity.

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The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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