Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,210	$ 775
Adjustments to reconcile net income to net cash from operating activities-
Gain on disposal, net of tax (Note 3)	(405)	0
Depreciation and amortization, including nuclear fuel, regulatory assets, net, intangible assets and deferred debt-related costs	1,003	1,307
Deferred income taxes and investment tax credits, net	462	453
Impairment of assets and related charges	0	162
Retirement benefits, net of payments	(113)	28
Pension trust contributions	(1,250)	0
Unrealized (gain) loss on derivative transactions	(5)	64
Changes in current assets and liabilities-
Receivables	(254)	73
Materials and supplies	43	(6)
Prepaid taxes and other	(114)	(41)
Accounts payable	125	(22)
Accrued taxes	(125)	(161)
Accrued compensation and benefits	(19)	(54)
Other current liabilities	(140)	13
Collateral, net	(21)	19
Other	161	152
Net cash provided from operating activities	558	2,762
New Financing-
Long-term debt	624	4,050
Short-term borrowings, net	1,400	0
Preferred stock issuance	1,616	0
Common stock issuance	850	0
Redemptions and Repayments-
Long-term debt	(2,278)	(1,711)
Short-term borrowings, net	0	(2,175)
Make-whole premiums paid on debt redemptions	(89)	0
Preferred stock dividend payments	(52)	0
Common stock dividend payments	(527)	(478)
Other	(21)	(67)
Net cash provided from (used for) financing activities	1,523	(381)
CASH FLOWS FROM INVESTING ACTIVITIES:
Property additions	(1,942)	(1,847)
Nuclear fuel	0	(156)
Proceeds from asset sales	419	0
Sales of investment securities held in trusts	736	1,923
Purchases of investment securities held in trusts	(780)	(1,995)
Notes receivable from affiliated companies	(500)	0
Asset removal costs	(171)	(130)
Other	1	(1)
Net cash used for investing activities	(2,237)	(2,206)
Net change in cash and cash equivalents and restricted cash	(156)	175
Cash, cash equivalents and restricted cash at beginning of period	643	260
Cash, cash equivalents and restricted cash at end of period	487	435
SUPPLEMENTAL CASH FLOW INFORMATION:
Non-cash transaction, beneficial conversion feature (Note 4)	296	0
Non-cash transaction, deemed dividend preferred stock (Note 4)	$ (296)	$ 0