Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Operating Activities
Net Income	$ 378	$ 317
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, depletion and amortization	493	504
Deferred income taxes	14	72
Assets losses, reserves and impairments, net	8	1
Changes in assets and liabilities, exclusive of changes shown separately (Note 13)	266	257
Net cash from operating activities	1,159	1,151
Investing Activities
Plant and equipment expenditures - utility	(684)	(463)
Plant and equipment expenditures - non-utility	(35)	(52)
Proceeds from sale of assets, net	9	24
Restricted cash for debt redemption	2	1
Proceeds from sale of nuclear decommissioning trust fund assets	59	128
Investment in nuclear decommissioning trust funds	(76)	(145)
Consolidation of VIEs		19
Other	(42)	(4)
Net cash used for investing activities	(767)	(492)
Financing Activities
Issuance of long-term debt	547
Redemption of long-term debt	(721)	(91)
Short-term borrowings, net	1	(327)
Issuance of common stock		23
Repurchase of common stock	(18)
Dividends on common stock	(190)	(176)
Other	(15)	(16)
Net cash used for financing activities	(396)	(587)
Net Increase (Decrease) in Cash and Cash Equivalents	(4)	72
Cash and Cash Equivalents at Beginning of Period	65	52
Cash and Cash Equivalents at End of Period	$ 61	$ 124

Consolidation of VIES.

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Payments to acquire property, plant and equipment for non-utility assets.

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Payments to acquire property, plant and equipment for utility assets.

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Transactions that do not result in cash inflows or outflows in the period in which they occur, but affect net income and thus are removed when calculating net cash flow from operating activities using the indirect cash flow method. This element is used when there is not a more specific and appropriate element.

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

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The net change during the reporting period of all current assets and liabilities used in 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 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 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 to reacquire common stock during the period.

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The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

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The cash inflow from the additional capital contribution to the entity.

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

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The net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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The cash inflow from the sale of other tangible or intangible assets used to produce goods or deliver services not otherwise defined in the taxonomy.

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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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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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