CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities
Net income	$ 553	$ 556
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	881	769
Nuclear fuel amortization	58	62
Deferred income taxes	47	110
Allowance for equity funds used during construction	(40)	(49)
Equity earnings of unconsolidated subsidiaries	(19)	(16)
Dividends from unconsolidated subsidiaries	20	18
Share-based compensation expense	35	10
Changes in operating assets and liabilities:
Accounts receivable	122	(11)
Accrued unbilled revenues	115	115
Inventories	25	101
Other current assets	19	39
Accounts payable	(157)	(1)
Net regulatory assets and liabilities	25	143
Other current liabilities	(195)	(247)
Pension and other employee benefit obligations	(139)	(142)
Other, net	(16)	(20)
Net cash provided by operating activities	1,334	1,437
Investing activities
Utility capital/construction expenditures	(1,689)	(1,854)
Purchases of investment securities	(488)	(367)
Proceeds from the sale of investment securities	478	357
Other, net	(9)	(1)
Net cash used in investing activities	(1,708)	(1,865)
Financing activities
Proceeds (repayments) from short-term borrowings, net	559	(132)
Proceeds from issuances of long-term debt	819	1,186
Repayments of long-term debt, including reacquisition premiums	(400)	(1)
Dividends paid	(387)	(359)
Other, net	(11)	(17)
Net cash provided by financing activities	580	677
Net change in cash and cash equivalents	206	249
Cash and cash equivalents at beginning of period	147	83
Cash and cash equivalents at end of period	353	332
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(344)	(313)
Income Taxes Paid, Net	54	(3)
Supplemental disclosure of non-cash investing and financing transactions:
Accrued property, plant and equipment additions	304	266
Inventory transfers to plant, property and equipment	40	35
Operating lease right-of-use assets	1,843	0
Allowance for equity funds used during construction	40	49
Issuance of common stock for equity awards	$ 32	$ 35