CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Cash Flows from Operating Activities:
Net income	$ 316	$ 297
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	423	363
Deferred income taxes	78	45
Loss on sale	0	43
Gain on equity securities	(45)	(79)
Loss on indexed debt securities	44	79
Pension and postretirement contributions	(20)	(63)
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	193	(125)
Inventory	65	110
Accounts payable	(259)	(216)
Other current assets	(134)	124
Other current liabilities	(344)	(264)
Other non-current assets	(12)	80
Other non-current liabilities	(29)	15
Other operating activities, net	6	1
Net cash provided by operating activities	282	410
Cash Flows from Investing Activities:
Capital expenditures	(1,198)	(1,038)
Payment for asset acquisition	0	(357)
Proceeds from divestitures	0	1,219
Other investing activities, net	10	(58)
Net cash used in investing activities	(1,188)	(234)
Cash Flows from Financing Activities:
Decrease in short-term borrowings, net	0	(3)
Proceeds from (payments of) commercial paper, net	(979)	569
Proceeds from long-term debt and term loans, net	3,441	665
Payments of long-term debt and term loans, including make-whole premiums	(748)	(11)
Payment of debt issuance costs	(24)	(8)
Payment of dividends on Common Stock	(150)	(143)
Other financing activities, net	(27)	(16)
Net cash provided by financing activities	1,513	1,053
Net Increase in Cash, Cash Equivalents and Restricted Cash	607	1,229
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	49	30
Cash, Cash Equivalents and Restricted Cash at End of Period	656	1,259
Supplemental Disclosure of Cash Flow Information
Cash paid for interest, net of capitalized interest	309	290
Income tax payments (refunds), net	0	(3)
Supplemental Disclosure of Non-cash Transactions
Accounts payable related to capital expenditures	445	334
ROU assets obtained in exchange for lease liabilities	$ 0	$ 35