CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash Flows from Operating Activities
Net Income/(Loss)	$ 482	$ (684)
Adjustments to reconcile net income/(loss) to cash provided/(used) by operating activities:
Equity in and distributions from earnings of unconsolidated affiliates	(6)	(16)
Depreciation of property, plant and equipment and amortization of customer relationships and other intangible assets	814	813
Amortization of capitalized contract costs	231	108
Accretion of asset retirement obligations	29	14
Provision for credit losses	228	165
Amortization of nuclear fuel	0	42
Amortization of financing costs and debt discounts	32	42
Loss on debt extinguishment	260	0
Amortization of in-the-money contracts and emissions allowances	83	111
Amortization of unearned equity compensation	82	87
Net gain on sale of assets and disposal of assets	(197)	(187)
Impairment losses	15	0
Changes in derivative instruments	268	1,553
Changes in current and deferred income taxes and liability for uncertain tax benefits	134	(225)
Changes in collateral deposits in support of risk management activities	(80)	(1,188)
Changes in nuclear decommissioning trust liability	0	(4)
Changes in other working capital	(1,021)	(1,093)
Cash provided/(used) by operating activities	1,354	(462)
Cash Flows from Investing Activities
Payments for acquisitions of businesses and assets, net of cash acquired	(33)	(2,502)
Capital expenditures	(286)	(493)
Net purchases of emissions allowances	(16)	(25)
Investments in nuclear decommissioning trust fund securities	0	(293)
Proceeds from the sale of nuclear decommissioning trust fund securities	0	280
Proceeds from sales of assets, net of cash disposed	495	229
Proceeds from insurance recoveries for property, plant and equipment, net	3	173
Cash provided/(used) by investing activities	163	(2,631)
Cash Flows from Financing Activities
Proceeds from issuance of preferred stock, net of fees	0	635
Payments of dividends to preferred and common stockholders	(322)	(295)
Equivalent shares purchased in lieu of tax withholdings	(45)	(19)
Payments for share repurchase activity	(316)	(50)
Net (payments)/receipts from settlement of acquired derivatives that include financing elements	(2)	332
Net proceeds of Revolving Credit Facility and Receivable Securitization Facilities	0	300
Proceeds from issuance of long-term debt	875	731
Payments of debt issuance costs	(13)	(29)
Repayments of long-term debt and finance leases	(960)	(15)
Payments for debt extinguishment costs	(258)	0
Proceeds from credit facilities	1,050	3,020
Repayments to credit facilities	(1,050)	(3,020)
Cash (used)/provided by financing activities	(1,041)	1,590
Effect of exchange rate changes on cash and cash equivalents	1	0
Net Increase/(Decrease) in Cash and Cash Equivalents, Funds Deposited by Counterparties and Restricted Cash	477	(1,503)
Cash and Cash Equivalents, Funds Deposited by Counterparties and Restricted Cash at Beginning of Period	649	2,178
Cash and Cash Equivalents, Funds Deposited by Counterparties and Restricted Cash at End of Period	$ 1,126	$ 675