Condensed Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash Flows from Operating Activities:
Net income	$ 721	$ 614
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	645	634
Deferred income taxes	23	51
Gain on divestitures	(303)	0
Loss (gain) on equity securities	78	(52)
Loss (gain) on indexed debt securities	(171)	51
Equity in earnings of unconsolidated affiliates	0	(175)
Distributions from unconsolidated affiliates	0	77
Pension contributions	(4)	(8)
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	64	220
Inventory	15	53
Taxes receivable	(2)	4
Accounts payable	(132)	(120)
Net regulatory assets and liabilities	113	(2,329)
Other current assets and liabilities	(164)	(100)
Other non-current assets and liabilities	30	(16)
Other operating activities, net	65	20
Net cash provided by (used in) operating activities	978	(1,076)
Cash Flows from Investing Activities:
Capital expenditures	(1,880)	(1,383)
Proceeds from sale of marketable securities	702	0
Proceeds from divestitures	2,075	0
Other investing activities, net	45	7
Net cash provided by (used in) investing activities	942	(1,376)
Cash Flows from Financing Activities:
Decrease in short-term borrowings, net	(43)	(27)
Payment of obligation for finance lease	(171)	0
Proceeds from (payments of) commercial paper, net	(1,226)	225
Proceeds from long-term debt	1,292	4,493
Payments of long-term debt, including make-whole premiums	(1,187)	(1,960)
Payment of debt issuance costs	(17)	(37)
Payment of dividends on Common Stock	(214)	(183)
Payment of dividends on Preferred Stock	(24)	(65)
Other financing activities, net	(7)	(4)
Net cash provided by (used in) financing activities	(1,597)	2,442
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	323	(10)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	254	167
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 577	$ 157