Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flow from Operating Activities:
Net Income	$ 321	$ 348
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	444	418
Loss from assets held for sale	0	15
Regulatory assets/liabilities amortization and carrying cost	32	37
Pension cost	45	62
Earnings from equity method investments	(2)	(7)
Distributions of earnings received from equity method investments	2	7
Unrealized gain on marked-to-market derivative contracts	(23)	(4)
Deferred taxes	(22)	106
Other non-cash items	(14)	(11)
Changes in operating assets and liabilities:
Current assets	295	120
Noncurrent assets	(34)	(69)
Current liabilities	(247)	(122)
Noncurrent liabilities	20	83
Net Cash Provided by Operating Activities	817	983
Cash Flow from Investing Activities:
Capital expenditures	(1,337)	(751)
Contributions in aid of construction	21	23
Proceeds from sale of assets	2	136
Distributions received from equity method investments	5	2
Other investments and equity method investments, net	(143)	(16)
Net Cash Used in Investing Activities	(1,452)	(606)
Cash Flow from Financing Activities:
Non-current note issuance	1,188	325
Repayments of non-current debt	(194)	(65)
Repayments of other short-term debt, net	(54)	(539)
Repayments of financing leases	(25)	(12)
Repurchase of common stock	0	(4)
Issuance of common stock	0	(2)
Distributions to noncontrolling interests	(10)	(22)
Distributions to noncontrolling interests	131	220
Dividends paid	(272)	(267)
Net Cash Provided by (Used in) Financing Activities	764	(366)
Net Increase in Cash, Cash Equivalents and Restricted Cash	129	11
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	43	46
Cash, Cash Equivalents and Restricted Cash, End of Period	172	57
Supplemental Cash Flow Information
Cash paid for interest, net of amounts capitalized	125	113
Cash paid/(refund) for income taxes	$ 3	$ (13)